This work reports the Spark Plasma Sintering (SPS) of composites derived from a mixture of alumina (Al₂O₃), tungsten carbide (WC) and cobalt (Co) for applications in abrasive machining. Powders with nominal composition 80 wt% Al₂O₃–18 wt% WC - 2 wt% Co were processed by high energy milling and sintered at 1550 °C for 5 min. Specimens with apparent porosity of 1.15% and microhardness of 26.41 GPa were obtained. The analysis of the friction coefficient curve showed a variation of 0.54. The composite wear rate reached 1.978× 10⁻⁶ mm³/Nm. The surface roughness increased by 101.4% after the wear test.

中文翻译：

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火花等离子体烧结Al ₂ O ₃ -WC-Co复合材料的组织与力学性能。

这项工作报告了由氧化铝（Al ₂ O ₃），碳化钨（WC）和钴（Co）的混合物衍生而来的复合材料的火花等离子体烧结（SPS），用于研磨加工。通过高能研磨对标称成分为80 wt％Al ₂ O ₃ –18 wt％WC-2 wt％Co的粉末进行处理，并在1550°C下烧结5分钟。得到的试样的表观孔隙率为1.15％，显微硬度为26.41 GPa。摩擦系数曲线的分析显示出0.54的变化。复合磨损率达到1.978×10 ^-6  mm ³ / Nm。磨损试验后，表面粗糙度增加了101.4％。