作者考察了热压烧结WC-Ni-PbO金属陶瓷材料的高温摩擦学性能,发现其在400～600℃的温度范围内具有较高的机械强度和良好的自润滑性,而且在比较高的滑动速度和负荷条件下的摩擦磨损性能更优。X-射线衍射分析表明,这种材料的主要成分是Ni、WC和PbWO_4。随着环境温度的升高,材料摩擦轨迹上PbWO_4的含量逐渐增多,摩擦系数逐渐下降,表明PbWO_4具有高温润滑性。WC-Ni-PbO材料的摩擦温度特性与PbO的不同,无论是未经摩擦的材料,还是在其摩擦轨迹上,均未发现PbO的存在。 The author investigated the hot-pressed WC-Ni-PbO cermet at high temperature tribological properties and found that it has high mechanical strength and good self-lubricating properties in the temperature range of 400 ~ 600 ℃, and in the relatively high sliding Friction and wear performance under speed and load conditions is better. X-ray diffraction analysis showed that the main components of this material are Ni, WC and PbWO 4. With the increase of ambient temperature, the content of PbWO 4 on the friction track gradually increases, and the friction coefficient decreases gradually, which indicates that PbWO 4 has high temperature lubricity. The friction temperature characteristic of WC-Ni-PbO material is different from that of PbO, and the existence of PbO is not found on either the non-friction material or the frictional path.