一、前言磨损给人类带来了严重的经济损失。美国、苏联、英国等国的统计表明,每年因磨损所造成的损失以百亿元计,其中磨料磨损又占总磨损损失的50％以上。因此,各国在研制新型的磨料磨损材料方面做了大量的工作,且得到较快进展。高锰钢被称为第一代耐磨材料。镍硬 First, the foreword wear and tear to humans has brought serious economic losses. Statistics from the United States, the Soviet Union, the United Kingdom and other countries show that the annual loss due to wear and tear is in the tens of billions of dollars, of which abrasive wear accounts for more than 50% of the total wear and tear losses. Therefore, a great deal of work has been done by all countries in the development of new types of abrasives and materials, and rapid progress has been made. High manganese steel is called the first generation of wear-resistant materials. Nickel hard