Coatings News & Articles

Thursday, July 23, 2009 - 13:56

Dry film lubricants low friction coatings can be excellent means to achieving low friction.

Unlike greases, oils, or ‘wet’ lubricants, dry film lubricants low friction coatings can be utilized in extreme environments, such as very high temperature or pressure, even under vacuum, where other, organic-based compounds like PTFE (polytetrafluoroethylene) will ‘cold flow’, never survive.

Thursday, July 23, 2009 - 13:56

Dry film lubricants are defined as one or more solids used between two surfaces in relative motion for the purpose of lowering friction or reducing wear.

Unlike greases (solid or semi-fluid based dispersions of a thickening agent in a lubricant) or the use of oils.

Also known as solid films, these are best utilized in extreme environments, such as very high temperature or pressure, where organic-based compounds could never survive.

Thursday, July 23, 2009 - 13:56

Dupont Teflon, a trademarked name, is also available in polytetrafluoroethylene (PTFE).

This fluoropolymer, also manufactured by others, is one of the most widely recognized compounds used throughout the world. Its applications are near endless.

Dupont PTFE is a product formed by free radical vinyl polymerization of tetrafluoroethylene (TFE) and is known to have a continuous service temperature of 500 F. Much higher temperatures can be satisfactorily sustained for shorter exposures.

Thursday, July 23, 2009 - 13:56

Thermal spraying is a process by which metals, alloys, or ceramic coatings are applied to a surface in their molten or semi-molten state. Hot thermal spray particles are atomized, accelerated toward the work by a stream of jet air.

Thursday, July 23, 2009 - 13:56

Chemical Vapor Deposition (CVD) is a coating process involving gaseous chemical compounds transported to a reaction chamber, activated thermally close to the prepared substrate, and made to react to form a solid deposit on the surface.

Carbides, nitrides, borides, and oxide coatings are just some of the desired products, formed by a metal halide vapor accompanied by a reactive gas species.

Thursday, July 23, 2009 - 13:56

Hardening to promote wear resistance is accomplished by a variety of means. Here, we will discuss aspects of heat treating, nitriding, and carburizing. All are recognized for their comparatively thin films.

Heat treatment comprises myriad processes, each with a specific task. They include: relief of residual stresses, creating ease in machining, altering microstructure for improved properties, and to raise hardness.

Thursday, July 23, 2009 - 13:56

Anodizing is a common process in the finishing industry for electrolytic treatment of metals to form stable films or coatings on the metalTeflon nickel acetate, wear, tribology surface. Anodized aluminum or magnesium, for example, are typically associated with functional coatings like hard anodize, also known as ‘hardcoat’.

In this process, unlike electroplating, the work is made the anode, and its surface is converted to a form of its oxide that is integral with the metal substrate.

Generally, it’s agreed that the ceramic oxide coating consists of two layers:

Thursday, July 23, 2009 - 13:56

Electroless nickel plating (EN) is a key part of the metal finishing industry. Its properties are widely recognized and used in an array of industrial applications.

Also known as autocatalytic plating or electroless plating, this chemical process is based on catalytic reduction and deposition of nickel in an aqueous bath and requires no electrical energy.

Benefits over electrolytic forms of plating (chrome, for example) include lower porosity, zero or low compressive stress, good ductility, hardness or wear resistance, as well as inherent dry lubrication and anti galling.

Thursday, July 23, 2009 - 13:49

Product sticking? Not getting the release you need?

Non stick coatings are not created equal. Properties vary. So does performance when you consider temperature and abrasion, the chemical and physical properties of your sticky product, too.

So, check out our pages. Talk to our sponsors. And eliminate sticking from your workplace for good!

Thursday, July 23, 2009 - 13:49

Experiencing corrosion? But don’t know how it’s forming? Or how to prevent it?

The answer may be beyond your parent metal.

Yet, corrosion protection will vary among industrial coatings. Each can have unique strengths. Ready to find the best?

First, we see "corrosion" and "chemical corrosion" the same. When a surface is attacked, it is a chemical (or electrochemical) reaction occurring between the surface and the environment. And the effects on surface properties or performance are negative.

Here are some common corrosion manifestations:

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