面向等离子体TiC/C功能梯度材料的真空性能研究  

Research on the vacuum properties of plasma—facing TiC/C functionally graded materials

作　　者：田蔚[1] 虎琳 张宏亮 魏花丽 王坤杰[1] TIAN Wei;HU Lin;ZHANG Hong-liang;WEI Hua-li;WANG Kun-jie(Xi'an Aerospace Composites Research Institute,Xi'an 710025,China;The Eighth Military Representative Office of Air Force Equipment Department in Xi'an,Xi'an 710065,China)

机构地区：[1]西安航天复合材料研究所,西安710025 [2]空军装备部驻西安地区第八军事代表室,西安710065

出　　处：《炭素》2019年第4期10-13,共4页Carbon

摘　　要：为改善涂层材料和碳基体材料的界面性能,本研究从缓冲界面膨胀失配性,减缓界面热应力,提高材料抗热冲击性能的角度出发,制备了面向等离子体TiC/C功能梯度材料,并重点考察了材料的真空性能。研究结果表明:功能梯度材料经等离子体辐射后释放出H2、H2O,CO和CO2四种气体,且气体的总出气量随温度变化的波动较小,说明材料具有较好的真空性能;相较于纯T1C涂层材料,TiC/C功能梯度材料的中间过渡层能够大大缓解最外层TiC材料与基体之间热膨胀的失配,显著改善两相界面,因而材料表现出更好的抗热冲击性能。In order to improve the interfacial properties of coating materials and carbon matrix materials,the plasma-facing TiC/C functionally graded materials were prepared from the point of view of cushioning interface expansion mismatch,slowing interfacial thermal stress and improving thermal shock resistance of the materials,and the vacuum properties of the materials were investigated.The results showed that H2,H20,CO and C02 were released from functionally graded materials after plasma radiation,and the total gas desorption fluctuates little with temperature,which indicated that the materials had better vacuum properties.Compared with the pure TiC coating materials,the intermediate transition layer of TiC/C functionally graded materials could greatly alleviate the thermal expansion mismatch between the outermost TiC materials and the substrate,and significantly improve the interface between the two phases,so the materials show better thermal shock resistance.

关 键 词：功能梯度材料 真空性能 界面 

分 类 号：TL627[核科学技术—核技术及应用]