In-Situ Formed Al3Zr Compounds Reinforced Al Composites and Tribological Application

An Al3Zr-reinforced Al matrix composite using metal powders was fabricated via in-situ synthesis in vacuum; these were subjected to a pin-on-disc wear test with SUS304 disc specimen under oil lubrication. The elemental mixture of and ZrH2 particles sintered vacuum for the in-situ-formed Al3Zr. thermally decomposed reaction form hard Al3Zr intermetallic compounds. friction coefficient volume values Al–Al3Zr composites significantly lower than those pure specimen. This is attributed uniform dispersion matrix, which prevented metallurgical bond from falling blocked direct contact between disc.