采用销／盘磨损试验，测定碳化钒（ＶＣ）和碳化铌（ＮｂＣ）覆层的大量磨损数据．借助统计方法，得出碳化物覆层磨损系数Ｋ服从对数正态分布．估计了不同配副试样Ｋ的分布参数和位置统计量，作出了直方图和密度函数曲线，评价了销／盘磨损特性．结果表明：中位数比算术平均值能更好地描述实际平均磨损；随着载荷的增加，位置统计量趋于接近；碳化物覆层磨损抗力是淬火钢的６～１１倍． A large number of wear data for the vanadium (VC) and niobium carbide (NbC) coatings were determined using a pin / plate wear test. With the help of statistical method, it can be concluded that the wearing coefficient K of carbide coating obeys lognormal distribution. The distribution parameters and position statistics of different samples K were estimated. The histogram and density function curves were obtained, and the pin / disc wear characteristics were evaluated. The results show that the median is better than the arithmetic average to describe the actual average wear. With the increase of load, the position statistic tends to be close. The wear resistance of carbide coating is 6 to 11 times harder steel.