#zinc corrosion

[johnnymartyr]

Mailbag: How's the Build Quality of the Leica M6 TTL?

by Johnny Martyr My daughter and I checking out the selection at the Leica Store Paris – photo by Stephanie Lee Isaiah Hervé and I follow one another on Instagram. He takes beautiful, serene landscape photos that just blow me away. His work is very fine and nuanced and nothing that I have the patience or skill for! So, many thanks to him for taking an interest in my clumsy…

[materialsscienceandengineering]

Intermetallic palladium-zinc alloy: A corrosion-resistant, highly active electrocatalyst

Osaka Metropolitan University researchers have created intermetallic alloy nanoparticles of palladium and zinc with an alternating arrangement of zinc and palladium atoms. The intermetallic alloy is more corrosion-resistant than substitutional alloys while retaining the electrocatalytic properties of both metals, which could be useful for developing new non-precious metal electrocatalysts.

Palladium—a precious metal—is attracting attention as a fuel cell electrocatalyst, which requires metals with high electrocatalytic activity. Because of the high cost of palladium, creating a palladium-zinc alloy should improve catalytic activity while reducing costs. In addition, corrosion resistance is important for potential electrocatalyst materials because catalytic reactions use extremely corrosive alkaline aqueous solutions that degrade metal electrocatalysts and lower their efficiency over time.

A research group led by Professor Hiroshi Inoue, Associate Professor Eiji Higuchi, and Associate Professor Masanobu Chiku of the Graduate School of Engineering, Osaka Metropolitan University, has found a promising intermetallic alloy of palladium and zinc (i-PdZn). The intermetallic alloy has a precisely arranged atomic structure consisting of equal amounts of alternating palladium and zinc atoms. This makes the i-PdZn highly resistant to corrosion in alkaline aqueous solutions.

Read more.

[distekgroup]

The Ultimate Guide to Thermal Diffusion Zinc Coating Solutions for Steel Products

Distek is one of the leading players in the field of coating technologies. We offer cutting-edge thermal diffusion zinc coating solutions to meet the unique needs of various enterprises. Read more: https://medium.com/@distekg/the-ultimate-guide-to-thermal-diffusion-zinc-coating-solutions-for-steel-products-fa5873389aa3

[distek-group]

Why Coating is Essential to Protect Metals

Metal has been very precious for human beings since the era of the medieval period. We gain knowledge of the anti corrosion coating of steel products. various types of coating are available, their application process, and how to preserve the longevity and good performance of steel. Contact us Now.

[whats-in-a-sentence]

Cathodic protection is a concept used to protect large objects, such as ships, pipelines and buildings, from rusting (figure 12.24).

"Chemistry" 2e - Blackman, A., Bottle, S., Schmid, S., Mocerino, M., Wille, U.

[mechanicalfinishersinc]

If you’re dealing with rust on iron or metal surfaces, you’re not alone. Rust is a common issue that affects the appearance and structural integrity of various objects, from household tools to industrial equipment. But fear not, for we are here to guide you through the best way to Rust removal services from iron and metal, ensuring your possessions regain their former glory.

Metal finishing services offer a range of solutions, including rust and corrosion removal services. They have the expertise, equipment, and experience to restore your metal items to their former glory. Whether it’s automotive parts, antiques, or industrial machinery, these experts can tackle rust issues with precision.

[chemicalsmaterialsnews]

Zinc Chemicals are Mostly Used in Automotive and Tire Industries

Zinc chemicals are extensively used in the production of automotive tubes and tires. You all are familiar with the increasing number of vehicles on the road because of increasing disposable income of the people. And, zinc chemicals are used in the production of tires and tubes, so it is not that hard to imagine the mammoth demand for these chemicals.

Increasing E-Vehicles Power the Demand for Zinc Chemicals

What’s more, there is an increase in the number of e-vehicles as well on top of the conventional vehicles. Likewise, higher zinc oxide loadings can advance hot air properties, while too low a zinc oxide concentration can give rise to problems. It also decreases heat buildup and wear and tear of tire, making it a significant part of the tire manufacturing industry. Consequently, with the expansion of the tire industry, the demand for zinc oxide. Will also grow leaps and bounds.

Talking of automotive tires, they are mostly manufactured in the Asia Pacific region. The major countries of the region are the key automobile producers; therefore, the requirement for the zinc chemicals will only rise. This is because, there is absolutely no stopping to the demand for vehicles.

China and India are Major Users of Zinc Chemicals

We have talked about the APAC being the largest end user of zinc chemicals earlier, it is not only because of the automotive and tire industry.

China produces the most chemicals all over the world. The chemical manufacturing sector will only grow with time, as a result of a lot of initiatives carried out by the government and also because there is a large base of end-users as well base. The growth in chemical production will bring about a lot of promising prospects for the industry to grow.

The booming agrochemical sector and economic boom in China and India will power the requirement for zinc chemicals. Chemical fertilizers are lower-priced and ease of accessibility are important for the growth of the industry. Zinc sulphate is used as an additive in chemical fertilizers, boosting the industry for zinc chemicals.

Zinc chemicals are also used in decorative coatings and India is home to a lot of decorative and industrial coating manufacturers. Due to the increased requirement for coatings, companies have boosted their production. This will power the demand for synthetic rubber, boosting the requirement for zinc chemicals in the years to come as well.

[literaryvein-reblogs]

Writing Notes: Poison

References (Forms, Actions & Examples of Poison; Route of Administration; Some Symptoms; What to do if a Poisoning Happens)

400 years back, Paracelsus stated that, “All substances are poisons; there is none which is not a poison.”

If the right dose is taken, it could become a remedy, otherwise poisonous.

Poison - a substance which when administered, inhaled or swallowed by living organism causes ill effects on the body. It is defined also as a medicine in a toxic dose. Toxic substance may be solid, liquid, gas or any environmental agent.

Forms of Poison

Physical form: Gaseous/volatile/vaporous forms of poisons act faster than liquid poisons as they are quickly absorbed. Similarly, liquid poisons act faster than solid poisons. Gaseous or volatile > liquid > solid. For solid poisons, powdered poisons act quickly than the lumps. For example, there are certain seeds that escape the gastrointestinal tract as they are solid, but when crushed, they can be fatal. For solids: powdered > lumps

Chemical form: Few substances like mercury or arsenic are not poisonous as they are insoluble and cannot be absorbed when they are in combination with other substances like mercuric chloride, arsenic oxide, etc. In other cases, the action is vice versa. For example, there are some substances that become inert in combination with silver nitrate and hydrochloric acid and are deadly and poisonous when present in pure forms.

Mechanical combination: The effect of poisons is significantly altered when they are combined with inert substances.

Action of Poisons

Local action: Direct action on the affected site of the body. Examples include irritation and inflammation in strong mineral acids and alkalis, congestion and inflammation by irritants, the effect on motor and sensory nerves, etc.

Remote action: Affects the person due to absorption of that poison into the system of that person. For example, alcohol is absorbed in the system and then it affects the person.

Local and remote actions: Some poisons can affect both local and remote organs. Thus, they not only affect the area with contact to the poison but also cause toxic effect after absorption into the system.

General action: The absorbed poison affects more than one system of the body, for example, mercury, arsenic, etc.

Route of Administration

The route of administration is the path through which a drug, toxin, or poison is taken or administered into the body of a person which is distinguished by the location where any drug is applied. It is mostly classified on the basis of its target:

Topical—has a local effect

Enteral—has a wide effect, i.e., affect the whole system

Parental—follows a systemic action

Poisons are given or taken so that death can occur at once by shock due to stoppage of body’s vital systems.

Route of administration plays a very important role in determination of death by poison as time in which death occurs are fastest in inhaled poisons, relatively slow in injected and lastly when ingested orally.

Some Symptoms

Sore throat

Trouble breathing

Drowsiness, irritability, or jumpiness

Nausea, vomiting, or stomach pain without fever

Lip or mouth burns or blisters

Unusual drooling

Strange odors on breath

Unusual stains on clothing

Seizures or unconsciousness

Examples

Poisons Based on Mode of Action

1. Corrosive poisons

Strong Acid - sulfuric acid, nitric acid, hydrochloric acid

Strong Base - sodium hydroxide, potassium hydroxide, ammoniumhydroxide

2. Irritant poisons

(a) Inorganic:

Metallic - lead, arsenic, mercury, antimony, copper, zinc

Non-metallic - chlorine, bromine, iodine

(b) Organic:

Vegetable - croton oil, castor oil

Animal - snake venom, scorpion venom, spider venom

(c) Mechanical: powder glass, diamond dust

3. Neurotic poisons

Cerebral - alcohol, opium, barbiturates, benzodiazepines

Spinal - strychnine

Peripheral - curare

4. Cardiac poisons

5. Asphyxiants - CO2, CO

Poisons Based on Medicolegal Classification

Homicidal poisons - aconite, abrus precatorius, strychnos nux vomica

Suicidal poisons - opium, barbiturate, organophosphorous, organochloro compounds

Accidental poisons - snake bite, CO, dhatura's seeds as it resembles capsicum seeds

Abortifacient poisons - quinine, calotropis

Stupefying agents - dhatura, chloral hydrate

Agents used to cause body injury - corrosive acids

Cattle poison - abrus precatorius, calotropis

Used for malingering - semicarpus anacardium

Poisons Based on Toxico-analytical Classification

1. Gaseous poisons: methanol, ethanol, benzene, toluene, acetone

2. Volatile substances: ethane, butane

3. Organic Non-volatile substances:

Drugs - opiates and synthetic narcotics, sedatives and hypnotics, stimulants, depressants

Pesticides - insecticides, fungicides, herbicides, rodenticides, nematocides

4. Metallic poisons: arsenic, lead, mercury, antimony, zinc, copper

5. Anion poisons: bromide, cyanide, fluoride, hypochlorite, nitrate, phosphate, sulfide, sulfate

Poisons Based on Physical State

1. Solid: lead, arsenic, mercury

2. Liquid:

Organic - ethanol, methanol, chloroform, acetone

Inorganic - liquid ammonia, liquid sulfur dioxide

3. Gaseous: carbon dioxide, carbon monoxide

Poisonous Fumes or Gases

In the home, poisonous fumes can be emitted from the following sources:

A car running in a closed garage

Leaky gas vents

Wood, coal, or kerosene stoves that are not working properly

Mixing bleach and ammonia together while cleaning, which makes chloramine gas

Strong fumes from other cleaners and solvents

Common Household Products

Oily hydrocarbon products are thin and slippery and can easily suffocate if the substances are drawn into the lungs when ingested. The products can cause chemical pneumonia by coating the inside of the lungs. Products that are required to have a safety lid include:

Baby oils

Sunscreens

Nail enamel dryers

Hair oils

Bath, body, and massage oils

Makeup removers

Some automotive chemicals (gasoline additives, fuel injection cleaners, and carburetor cleaners)

Cleaning solvents (wood oil cleaners, metal cleaners, spot removers, and adhesive removers)

Some water repellents containing mineral spirits used for decks, shoes, and sports equipment

General-use household oil

Gun-cleaning solvents containing kerosene

Oil products that are thicker and more "syrupy" are not as problematic, since they are not as easily inhaled into the lungs.

What to do if a poisoning happens

Swallowed poisons

Stay calm, act quickly, and follow these guidelines:

Get the poison away

If the substance is still in the mouth, make them spit it out or remove it with your fingers (keep this along with any other evidence of what was swallowed)

Do not make them vomit

Do not follow instructions on packaging regarding poisoning because these are often outdated. Instead, call Poison Help to get connected to a local poison center.

Take or send the poison container with you to help the healthcare provider find out what was swallowed.

Poisons on the skin

If someone spills a chemical on his or her body, remove his or her clothes and rinse the skin with lukewarm—not hot—water.

If the area shows signs of being burned, continue rinsing for at least 15 minutes, no matter how much they may protest.

Then call the poison control center for further advice.

Do not use ointments or grease.

Poison in the eye

Flush the eye by holding the eyelid open and pouring a steady stream of lukewarm—not hot—water into the inner corner of the eye.

If this is a child, you may need help from another adult to hold the child while you rinse the eye.

Continue flushing the eye for 15 minutes, and call the poison control center for further instructions.

Do not use an eyecup, eyedrops, or ointment unless the poison center tells you to do so.

Poisonous fumes or gases

If someone breathes in fumes or gases, get him or her into fresh air right away.

If they are breathing without a problem, call the poison center for further instructions.

If they are having difficulty breathing, call 911 or your local emergency service (EMS).

If they have stopped breathing, start CPR and do not stop until they breathe on their own or someone else can take over.

If you can, have someone call 911 right away.

If you are alone, perform CPR for 2 minutes and then call 911.

Be prepared for a poisoning emergency by posting the poison center telephone number by every telephone in your home.

Sources: 1 2 3 ⚜ Writing Notes & References

Writing Notes: Fictional Poisons

[the-faultofdaedalus]

smth about the corrosion of metals being described in an almost living way,,,, bronze disease,,,, zinc rot…. tin plague….. corrosion as a living breathing thing that is eating inorganic substances alive,,,,,,

[solarpunks]

A rendering of a rooftop terrace installed by the Parisian startup Roofscapes.

Paris When It Sizzles: The City of Light Aims to Get Smart on Heat

With its zinc roofs and minimal tree cover, Paris was not built to handle the new era of extreme heat. Now, like other cities worldwide, it is looking at ways to adapt to rising temperatures — planting rooftop terraces, rethinking its pavements, and greening its boulevards.

In many cities, this urban remodeling project is already underway. In New York City, workers and volunteers have planted over a million trees to add shade and clean the air. In Seville, Spain, city planners are using the technology of ancient underground waterways to provide cooling for the city without depending on air‑conditioning. In Freetown, Sierra Leone, officials are creating urban gardens, improving access to clean water, and erecting plexiglass awnings over outdoor markets. In Los Angeles, public works crews are painting streets white to increase reflectivity. In India, they are experimenting with green roofs, which absorb heat and create space to grow food. But perhaps nowhere in the world do the challenges, as well as the opportunities, loom larger than in Paris, where nearly 80 percent of the buildings have zinc roofs — an affordable, corrosion-resistant and virtually inflammable innovation of the 19th century. But those roofs are, in the 21st century, deadly — heating up to 194 degrees F on a summer day. And because top‑floor garrets were not insulated, that heat is transferred directly into the rooms below.

[ohwaitwhatdamn]

Unburying is the first action

Take great care and patience

while removing fractured and splintered wood

to replace for (re)purpose is the second action

Galvanizing the tracks with zinc to

create a sacrificial layer to protect the

metal surface from corrosion is the third action

Reactivation, rebuilding, revitalization, and restoring

These tracks once lead to somewhere

If you listen closely, you can still hear the train whistle

[materialsscienceandengineering]

The transition to renewable energy requires efficient methods for storing large amounts of electricity. Researchers at the Technical University of Munich (TUM) have developed a new method that could extend the lifespan of aqueous zinc-ion batteries by several orders of magnitude. Instead of lasting just a few thousand cycles, they could now endure several hundred thousand charge and discharge cycles. The key to this innovation is a special protective layer for the zinc anodes of the batteries. This layer addresses previous issues such as the growth of needle-like zinc structures -- known as zinc dendrites -- as well as unwanted chemical side reactions that trigger hydrogen formation and corrosion. The research team, led by Prof. Roland A. Fischer, Chair of Inorganic and Metal-Organic Chemistry at the TUM School of Natural Sciences, uses a unique material for this purpose: a porous organic polymer called TpBD-2F. This material forms a stable, ultra-thin, and highly ordered film on the zinc anode, allowing zinc ions to flow efficiently through nano-channels while keeping water away from the anode.

Read more.

[distekgroup]

Distek company developed and patented a new non-polluting technology of anti-corrosion protection for steel parts, based on a thermal-diffusion zinc-coating process using powder mixtures.

[distek-group]

What Makes Zinc Coating a Superior Metal Coating Option

We know metals are prone to corrosion. And we also know of its negative impacts, such as damaging the metal structure and entailing financial losses. Therefore, we should consider an effective method to guard metals against corrosion. Zinc coating is an effective technique to protect metals from corrosion. Due to zinc coating corrosion resistance, metal life becomes long.

[steelindustryman]

Top 5 GI Flanges Manufacturers in Delhi

Galvanized Iron (GI) flanges are essential components in various industries for connecting pipes, valves, and other fittings. These flanges are coated with a layer of zinc, offering superior corrosion resistance, durability, and a cost-effective solution for industrial and domestic applications. Delhi, being a major industrial hub in India, is home to several leading GI flange manufacturers that cater to industries such as water supply, construction, gas pipelines, and more.

Below is a look at the top 5 GI flange manufacturers in Delhi:

1. Udhhyog

Udhhyog is a well-established name in the B2B marketplace, specializing in high-quality GI flanges. The company has earned a reputation for delivering premium industrial products to MSMEs across India. Udhhyog’s flanges are known for their strength, precise dimensions, and long-lasting performance, making them a top choice for water supply systems, firefighting installations, and industrial pipelines. With a customer-centric approach, Udhhyog ensures competitive pricing and fast delivery.

Product Offerings:

GI Flanges

GI Blind Flanges

Why Choose Udhhyog:

High-quality zinc-coated flanges

Competitive pricing

Reliable supply chain for MSMEs

2. Sanjay Metal India

Sanjay Metal India is a prominent manufacturer and supplier of GI flanges in Delhi. They offer a wide range of galvanized iron flanges with different specifications that meet industry standards. Sanjay Metal India is known for its strong customer support, adherence to international quality standards, and timely delivery of products. The company’s GI flanges are widely used in water distribution, oil, and gas pipelines.

Why Choose Sanjay Metal India:

Wide variety of flange types

Products meet international quality certifications

Strong industry reputation for customer service

3. Regal Sales Corporation

Regal Sales Corporation has become a leader in manufacturing and exporting high-quality GI flanges in Delhi. Their flanges are produced using advanced machinery and meet global standards like ASME, ANSI, and DIN. Regal Sales Corporation serves industries such as oil & gas, petrochemicals, and construction, offering both standard and custom-made GI flanges that ensure corrosion resistance and durability.

Why Choose Regal Sales Corporation:

Advanced manufacturing technology

Compliance with international standards

Custom-made flange solutions

4. Metal Udyog

Metal Udyog is a well-known supplier of GI flanges, catering to various industrial applications. Their range of flanges is highly regarded for its durability, corrosion resistance, and precision. The company offers a variety of galvanized flanges, including slip-on, weld neck, and blind flanges, which are designed to withstand the rigors of high-pressure applications. Metal Udyog’s commitment to quality has made them one of the preferred suppliers in Delhi.

Why Choose Metal Udyog:

Focus on quality control and precision manufacturing

Comprehensive range of GI flanges

Fast delivery and industry-wide recognition

5. Suryadeep Industries

Suryadeep Industries is one of the leading manufacturers of galvanized iron flanges in Delhi, offering a wide selection of flanges suitable for various applications. Their products are crafted with precision and undergo stringent quality checks to ensure they meet industry requirements. The company is known for its affordable yet high-performance GI flanges, making them a popular choice among clients in the water treatment, plumbing, and irrigation sectors.

Why Choose Suryadeep Industries:

Affordable pricing without compromising on quality

Broad range of GI flange products

Extensive industry expertise

[udhhyog2]

Leading Supplier of Jindal GI ERW Pipe

In the world of construction and infrastructure, the choice of piping material can significantly impact the durability and efficiency of a project. Jindal GI ERW pipes (Galvanized Iron Electric Resistance Welded pipes) have emerged as a preferred choice due to their strength, resistance to corrosion, and ease of installation. As a leading supplier of Jindal GI ERW pipes, Udhhyog is committed to delivering high-quality products that meet the diverse needs of various industries.

What are Jindal GI ERW Pipes?

Jindal GI ERW pipes are manufactured using the electric resistance welding process, which ensures uniformity and strength. These pipes are coated with a layer of zinc, providing excellent protection against rust and corrosion. They are widely used in water supply, gas distribution, plumbing, and structural applications.

Key Features of Jindal GI ERW Pipes

Corrosion Resistance: The galvanization process protects the pipes from rust and corrosion, making them suitable for both indoor and outdoor applications.

High Strength: Jindal GI ERW pipes are known for their tensile strength, making them ideal for high-pressure applications.

Lightweight and Easy to Handle: These pipes are easier to transport and install compared to heavier alternatives, reducing overall labor costs.

Cost-Effective: With their durability and low maintenance requirements, Jindal GI ERW pipes offer a cost-effective solution for various piping needs.

Versatile Applications: They are used in numerous sectors, including agriculture, construction, and industrial applications.

Udhhyog: Your Trusted Supplier

As a prominent supplier of Jindal GI ERW pipes, Udhhyog prioritizes quality and customer satisfaction. Here are some reasons why Udhhyog stands out in the industry:

Quality Assurance: Udhhyog sources its GI ERW pipes directly from Jindal, ensuring that every product meets the highest industry standards.

Competitive Pricing: Committed to providing the best prices in India, Udhhyog ensures that customers receive value for their investments.

Extensive Inventory: With a wide range of sizes and specifications available, Udhhyog caters to diverse industrial needs, ensuring timely delivery and convenience.

Expert Support: Udhhyog’s experienced team is always available to provide expert guidance and assist customers in selecting the right products for their projects.

Flexible Payment Terms: Udhhyog offers flexible credit terms to support MSMEs in managing their procurement efficiently.