Improved sliding-wear resistance in in situ-toughened silicon carbide
Improved sliding-wear resistance in in situ-toughened silicon carbide
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DOI：
10.1111/j.1551-2916.2005.00628.x
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发表时间：
2005-12-01
影响因子：
3.9
通讯作者：
Padture, NP
中科院分区：
文献类型：
--
作者：
Borrero-López, O;Ortiz, AL;Padture, NP
研究了两种无压液相烧结（LPS）SiC陶瓷的显微组织对滑动磨损性能的影响，一种是粗大的原位生长的细长晶粒，另一种是细小的等轴晶粒。长晶LPS SiC的滑动磨损性能比等轴晶LPS SiC有显著提高，这归因于长晶SiC晶粒间的互锁网络。引入一个联锁网络的细长晶粒代表了一个新的指导方针，多晶陶瓷的微观结构设计，既滑动耐磨和增韧。
The effect of microstructure on the sliding-wear properties has been studied in two types of pressureless liquid-phase-sintered (LPS) SiC ceramics, one with coarse, in situ-grown elongated grains and the other with fine, equiaxed grains. Elongated-grain LPS SiC has been found to have dramatically improved sliding-wear properties over equiaxed-grain LPS SiC, which has been attributed to the interlocking network of elongated SiC grains. The introduction of an interlocking network of elongated grains represents a new guideline for the microstructural design of polycrystalline ceramics that are both sliding-wear resistant and toughened.