摘要
对C/SiC复合材料制备过程中碳化工艺进行了探索,包括碳化前造孔剂类型及质量分数的确定,碳化过程中碳化温度和碳化速度的确定等.用SEM和XRD分别对碳化后碳支架的孔道结构和相结构进行了分析,此外,也对碳支架的收缩率做了一定的测试.结果表明:选择造孔剂为淀粉且质量分数在14%～16%为最佳,碳支架的孔道包含孔道,微孔和大孔三种类型,碳支架的相结构主要为玻璃态结构的石墨,且碳支架的收缩率在长度和半径方向均一致.
The investigation is carried out to the carbonization technique o{ C/bit5 composites including choosing the suitable type and content of pore-forming agent before carbonization, and the carbonization rate and temperature in carbonization. The pore structure and phase structure of carbon template are studied respectively using SEM and XRD and the shrinkage rate of carbon templates is tested in the experiment as well. The result shows that the carbon template contains three types of pore structure, including pore channel, micropore and macropore. It is also revealed that the phase structure of the carbon template is mainly graphite in glass state and the shrinkage rate in both horizontal and longitudinal direction remains the same.
出处
《浙江工业大学学报》
CAS
2012年第6期685-688,共4页
Journal of Zhejiang University of Technology
基金
浙江工业大学新材料与加工重中之重学科开发基金资助项目(20110901)
