报道了一种从室温到1 000℃能够连续润滑的Ni3Al基自润滑复合材料.该材料选用高温强度和抗氧化性优异的Ni3Al金属间化合物为基体材料,利用多种高、低温固体润滑剂的复合和协同效应实现了宽温域连续润滑.本文介绍了利用真空热压烧结方法制备该自润滑复合材料的简要过程,研究了材料的高温力学性能,并在球盘式高温摩擦试验机(HT-1000型)和销盘式高速摩擦试验机上分别测试了不同温度和转速下Ni3Al基自润滑复合材料的摩擦磨损性能.结果表明,材料在1 000℃时具有优异的力学性能(压缩强度40～45 MPa)和自润滑性能(摩擦因数0.28 ～0.25),在高载和高速条件下具有稳定的更低的摩擦因数.
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