tribochemical wear resistance

Tribochemical wear resistance-tribochemical wear resistance-is commonly used to test the wear resistance and adhesion tendency of PVD coatings. By adjusting the elemental content of the coating, deposition parameters, ionomer, bias pressure, etc., the adhesion and morphology of the coating can be varied over a wide range. The tribological properties of the coating samples were tested by sliding wear test pin-on-disc test. Typically, PVD nanocoatings show an increase in the coefficient of friction and wear rate in an oxygen environment and a decrease in a nitrogen environment.

For example, TiB2-coated molds, machining brass stock, with uneven wear behavior, were found to have a low amount of wear and adhesion tendency of the coatings. Whereas bronze showed a strong tendency to adhere on all tested coatings. As for this type of wear, the main wear mechanism is friction chemical oxidative wear.

<h2>tribochemistry</h2>

Friction chemistry, the branch of chemistry that studies the chemical and physicochemical changes in solids caused by mechanical action. At least one component of the system studied in tribochemistry must be solid. Mechanical energy is injected mainly through grinding, friction, lubrication and abrasion and other ways to realize, friction chemistry and mechanical operation and mechanical processing process has a very close relationship.