放电等离子体烧结制备AlN/Al复合材料

AlN/Al composites prepared by spark plasma sintering process

AlN/Al复合材料是一种高导热复合材料,但现有制备工艺较为复杂。本文采用高能球磨的方式制备混合粉末,随后采用放电等离子烧结方法成功制备出AlN-20%Al材料。测试结果表明:制备的AlN/Al复合材料的相对密度大于97%,热导率为52.8W/m·K,烧结温度与传统的AlN相比降低了约200℃。

AlN/Al composites are new heat exchange materials,but conventional manufacture process is complex.In the work,AlN-20%Al composites were prepared by high energy ball milling and spark plasma sintering.The test results show that the AlN/Al composites with more than 97% relative density and thermal conductivity 52.8 W/m·K can be obtained.The sintering temperatue is much lower than conventional AlN sintering.