为了降低氮化硅材料的成本，运用便宜的低纯度从β-Si3N4粉末，通过无压烧结制备了氮化硅材料．发现β-Si3N4粉末具有很好的烧结性能，得到的结构是由柱状颗粒和小球状颗粒形成的嵌套结构，结构组成均匀，没有晶粒的异常生长．所得材料的抗弯强度为587MPa，韧性达到5.3MPa.m1/2，说明可在一般条件下使用。
Refractory grade β-St3N4 powder was pressureless sintered with the aim of lowering cost. It is showed that β-St3N4 has good sinterability. A microstructure with small rod-like grains was obtained, which dispersed uniformly in the matrix, no abnormal rod-like grains was observed. The material displayed a strength of 587MPa and fracture toughness of 5.3MPa.m1/2, which allow the material used in normal circumstance.
参考文献
| [1] |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%