难熔金属碳化物ZrC对树脂基炭微观结构的影响（英文）  

Influence of ZrC on the microstructure of its surrounding resin-based carbon at high temperature

作　　者：张中伟[1,2] 梅敏[2] 李亮[3] 南策文[1] 王俊山[2] 许正辉[2] 

机构地区：[1]清华大学材料科学与工程系新型陶瓷与精细加工国家重点实验室,北京100084 [2]航天材料及工艺研究所先进功能复合材料技术重点实验室,北京100076 [3]中国运载火箭技术研究院,北京100076

出　　处：《新型炭材料》2016年第4期451-454,共4页New Carbon Materials

摘　　要：在微纳观尺度,利用SEM、TEM和HR-TEM观察了难熔碳化物(ZrC)和树脂基炭经2 500℃以上高温处理后的显微组织结构。结果表明:ZrC颗粒表面包裹了一层取向和生长良好的石墨微晶炭过渡层。其中炭过渡层中晶体的层间距d002为0.3375nm,而没有包裹ZrC颗粒的树脂基炭仍然是各向同性结构。结合选区电子衍射结果可知,ZrC颗粒在高温下对树脂基炭有催化石墨化和诱导石墨化效应。The microstructures of a refractory ZrC particle and its surrounding resin-based carbon treated above 2500° C were investigated by SEM,TEM,HR-TEMand selected area electron diffraction. Results showthat the ZrC particle is enclosed by a transition carbon layer that has a d002 of 0. 3375 nm,close to that of ideal graphite,indicating the formation of a well graphitized structure. The carbon far away from the ZrC particle remains isotropic and amorphous. These results are verified by selected area electron diffraction,and can be attributed to catalytic graphitization and stress-induced graphitization.

关 键 词：难熔碳化物 碳 微观结构 石墨化 

分 类 号：TB33[一般工业技术—材料科学与工程]