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May Chementator briefs

By Gerald Ondrey |

Double-effect coating Researchers at the Leibniz-Instutut für Neue Materialien GmbH (INM; Saarbrücken, Germany; www.inm-gmbh.de) have developed a nanocomposite coating that simultaneously protects against corrosion while having lubrication properties similar to grease and oil. The new material is suitable for coating metals (such as steel, Al, Mg) and metal alloys. To form the composite, the researchers embedded platelet-like solid-state lubricants and platelet-like particles in a binder. When applied onto a surface, a well-arranged microstructure (imbricate structure) forms, explains Carsten Becker-Willinger, head of INMs Nanomere program division. A transfer film forms between the low-friction coating and the counterpart, which allows an almost frictionless sliding of the surfaces. The imbricate structure also acts as a barrier, thereby preventing the penetration of humidity or salts to the metal surface, he says. The low-friction coating can be applied using conventional wet-chemical processes, such as spray- or dip-coating. By a simple thermal curing, the imbricate structure forms in a self-organization without further interference. Japan-GTL demo A six-year, Japan-GTL (gas-to-liquids) demonstration test project was successfully…
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