Tribological properties of Aluminum Alloys: Part One
Various types of aluminum alloys are continually being developed to improve their wear resistance. Among these alloys, aluminum-silicon (Al-Si) alloys have been found to be beneficial in many industrial applications and considered to be appropriate substitutes for cast iron components. A large number of studies in recent years have been devoted to investigate the friction and wear behavior of Al-Si alloys. However, most of these studies were conducted under dry sliding conditions.
Tribological Properties of Aluminum Alloys: Part Two
Silicon has received the most attention among all alloying elements studied. This is due to the fact that Al-Si alloys are corrosion resistant, strong, have low thermal expansion coefficients, and have superior tribological characteristics compared to the other aluminum alloys.Researchers, who have conducted tests under dry conditions, tend to agree that the initial size of Si particles is not important.
Tungsten Carbide Metals: Part One
Tungsten Carbide is a remarkable material renowned for its use in some of the most demanding industrial applications. Classified as a refractory carbide, it exhibits exceptional mechanical and thermal properties, including a melting point exceeding 1800°C and outstanding hardness. Its high wear resistance makes it indispensable for extending part life in production processes, with applications ranging from tooling to extreme-environment electronics substrates.
Tungsten Carbide Metals: Part Two
By definitions composite materials consist of two or more materials which have clear distinction and different chemical composition.Tungsten composite powders can be made by a number of technological techniques ranging from reduction of cobalt oxide mixtures to the precipitation of colbalts onto the tungsten carbide surface.