在三代非能动压水堆核电设备控制棒驱动机构中，钩爪材料Stellite 6合金铸件与销轴材料HS25合金、驱动杆材料12Cr13不锈钢在运行时会互相磨损，为了验证钩爪材料的磨损性能，需要对钩爪材料进行摩擦副试验。试验模拟了钩爪实际工作时的磨损情况，设计了磨损试验，通过测定磨损试块的质量损失，对钩爪材料的磨损情况进行了分析，寻找出了两种材料间的最佳摩擦副。结果表明:钩爪材料Stellite 6合金铸件与销轴材料HS25合金相匹配，且HS25合金比Stellite 6合金更适宜作为转动件;钩爪材料Stellite 6合金铸件的硬度控制在40~42 HRC较为合适。

In generation-III passive pressurized water reactor (PWR) component control drive mechanism, the latch material Stellite 6 alloy casting, pin material HS25 alloy and drive rod material 12Cr13 stainless steel would wear each other, and in order to verify the wearing property of the latch material, friction pair test of the latch material was required. The actual wearing conditions of the latches was simulated and the friction test schemes were designed. Through measuring the mass lost of the wearing test specimens, the wearing status of the latch material was analyzed, and the best friction pairs were found. The results show that latch material Stellite 6 alloy casting was matched with pin material HS25 alloy, and HS25 alloy was more suitable to be the revolving member than Stellite 6 alloy. The hardness of latch material Stellite 6 alloy casting should be controlled in the range of 40-42 HRC.