以SiC和Si_3N_4为代表的无氧陶瓷在高温下的比强度、耐磨性及抗腐性是优异的。此种陶瓷材料被用于抗磨部件,滑动部件以及汽车部件,并预期将在许多其它机器零件中找到应用。但是上述陶瓷材料硬而脆,作为工程材料可靠性差,因此在工业上没有所期望的那样被广泛采用。因此采用韧化处理来改善其可靠性是一项重要的课题。 Anaerobic ceramics represented by SiC and Si_3N_4 are excellent in specific strength, abrasion resistance and corrosion resistance at high temperatures. Such ceramic materials are used in wear parts, sliding parts and automotive parts and are expected to find application in many other machine parts. However, these ceramic materials are hard and brittle and have poor reliability as engineering materials. Therefore, they are not widely used industrially as expected. Therefore, the use of toughening to improve its reliability is an important issue.