Tribological Behavior of the Alumina Reinforced with Unidirectionally Oriented SiC whiskers

일방향성 배열을 가잔 SiC whisker에 의해 강화된 알루미나 복합체의 마모마찰 특성

Sliding wear test and surface characterization techniques such as micro-Raman spectroscopy were employed to determine the effect of whisker content and orientation on the friction and wear behavior of SiC whisker reinforced alumina. Composites containing unidirectionally oriented whiskers were fabricated by novel technique Addition of SiC whiskers up to 20 vol.% lowered the friction and improved wear resistance. The results of this study indicated that highly disordered graphite and size of the layer behind the whiskers were responsible for variation of wear rate and friction coefficient.