采用机械球磨和热处理方法制备Ti3Al粉体，并将Ti3Al和C反应烧结制备Ti3AlC2陶瓷材料。将Ti、Al的摩尔比为3∶1的混合粉末，球磨20 h后经750℃热处理40 min得到质量分数达到98.54%的Ti3Al金属间化合物；然后采用Ti3Al和C的摩尔比为1∶2为原料，进行反应烧结制备Ti3AlC2，在1300℃保温60 min，可得到试样中Ti3AlC2的质量分数为96.4%。研究得出Ti3AlC2的合成路径即在反应过程中先生成Ti2AlC和TiC两相，然后二者反应合成Ti3AlC2相。
Ti3AlC2 ceramic was synthesized by reaction sintering of C and Ti3Al powders prepared by mechnical ball milling and heat treatment. The purity of Ti3Al reaches 98.54%when the mixture powder with Ti and Al molar ratio of 3∶1 was ball milled for 20 h, and heat treated at 750℃for 40 min. Ti3AlC2 ceramic was synthesized by reaction sintering of Ti3Al and C powders at molar ratio of 1∶2 at 1 300℃for 60 min. During reaction sintering, Ti2AlC and TiC were formed first by the reaction of Ti3Al and C, and then the Ti3AlC2 ceramic was synthesized by the reaction of Ti2AlC and TiC.
参考文献
| [1] | 艾桃桃.Ti3AlC2陶瓷的热压合成[J].陶瓷,2010(10):21-23. |
| [2] | 李小雷,周爱国,汪长安,马小娥,刘豫.自蔓延高温合成Ti3AlC2 和Ti2AlC及其反应机理研究[J].硅酸盐学报,2002(03):407-410. |
| [3] | 艾桃桃,冯小明.三元Ti3AlC2陶瓷的原位合成与表征[J].硅酸盐通报,2011(02):424-427. |
| [4] | Xiaohui Wang;Yanchun Zhou .Solid-liquid reaction synthesis of layered machinable Ti_3AlC_2 ceramic[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2002(3):455-460. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%