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为了扩大ＷＣ－Ｎｉ－Ｍｏ－ＰｂＯ四组元复合材料在工程实际中的应用范围，利用中频感应热压法制备了Ｗｃ－Ｎｉ－Ｃｏ－Ｍｏ－ＰｂＯ系高温自润滑金属陶瓷材料，并对其物理机械性能和摩擦学性能进行了试验研究，结果表明，含镍和钴这两组元之重量比为２的Ｗｃ－Ｎｉ－Ｃｏ－Ｍｏ＿ＰｂＯ材料的综合性能最好，即使在６００℃的高温下也具有较高的机械强度和相当好的摩擦学性能，且其在高速、重载下的摩擦磨损性能也比较好，Ｘ射线衍射分析发现，这种材料在６００℃时的摩擦表面形成了均匀分布的ＰｂＷＯ４膜，这是其在高温下具有良好自润滑性的根本原因，在烧结温度下，ＷＣ可溶解于钴相形成面心立方结构的Ｃｏ３Ｗ３Ｃ、Ｃｏ２Ｗ４Ｃ和Ｃｏ３Ｗ６Ｃ化合物，这能增强材料中金属相与陶瓷相的结合力。在自然降温冷却过程中，从钴相中析出Ｃｏ３Ｗ和元素碳，后者可与钼形成ＭｏＣ，进而形成Ｗｃ－ＭｏＣ固溶体，这既能细化ＷＣ晶粒，又能强化晶界，而且钴与镍形成的连续固溶体可以使金属相得以强化。这些都是提高材料的高温机械性能和摩擦学性能的直接原因。
In order to expand the application range of WC-Ni-Mo-PbO four-component composites in practical engineering, Wc-Ni-Co-Mo-PbO high temperature self-lubricating cermets were prepared by IF induction hot pressing. Physical and mechanical properties and tribological properties were studied. The results show that the Wc-Ni-Co-Mo_PbO material containing two components of nickel and cobalt has the best overall performance at a weight ratio of 2, even at a high temperature of 600 ℃ Also has a high mechanical strength and good tribological properties, and its friction and wear properties at high speed, heavy load is also better, X-ray diffraction analysis found that the friction surface of the material at 600 ℃ to form a uniform Distributed PbWO4 film, which is the root cause of its good self-lubricating properties at high temperature. At sintering temperature, WC can dissolve in the cobalt phase to form the face-centered cubic Co3W3C, Co2W4C and Co3W6C compounds, which can enhance the metal Phase and the combination of ceramic phase. During the natural cooling process, Co3W and elemental carbon are precipitated from the cobalt phase, and the latter can form MoC with molybdenum to form a Wc-MoC solid solution, which not only can refine the WC grains but also strengthen the grain boundaries, and that cobalt and The continuous solid solution formed by nickel allows the metal phases to be strengthened. These are the direct reasons for improving the high-temperature mechanical and tribological properties of the material.