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Wear Properties of SiAlON Ceramics

机译：SiAlON陶瓷的磨损性能

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摘要

Two phase α/β sialon ceramics have been prepared by hot pressing and their mechanical, and wear properties have been assessed. The effect of microstructural differences on the mechanical and wear properties of the ceramics was assessed through block on ring and ball on disk type wear experiments under a range of testing conditions. Under mild wear conditions, the higher hardness of the alpha sialon resulted in lower wear than the mixed composite. However, under more severe wear conditions, where the stress fields are high, wear occurred by microcracking of the sample. Under these conditions, the higher fracture toughness and the resistance to the propagation of such cracking afforded by the elongated microstructure of the mixed composites resulted in lower wear.
机译：已经通过热压制备了两相α/β赛隆陶瓷，并对其机械和磨损性能进行了评估。在一系列测试条件下，通过在圆盘上进行块状和圆盘式磨损实验，评估了微结构差异对陶瓷机械性能和磨损性能的影响。在轻度磨损条件下，较高的α赛隆硬度导致比混合复合材料低磨损。但是，在应力场较高的更严重的磨损条件下，样品的微裂纹会导致磨损。在这些条件下，由混合复合材料的细长微观结构提供的较高的断裂韧性和这种裂纹的扩展阻力导致较低的磨损。

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