A zirconium carbide coating on graphite prepared by reactive melt infiltration  

作　　者：杨鑫 苏哲安 黄启忠 柴立元 钟平 薛亮 

机构地区：[1]School of Metallurgical Science and Engineering,Central South University [2]State Key Laboratory of Powder Metallurgy (Central South University)

出　　处：《Journal of Central South University》2014年第2期472-476,共5页中南大学学报（英文版）

基　　金：Project(51304249)supported by the National Natural Science Foundation of China;Project(14JJ3023)supported by Hunan Provincial Science Foundation of China;Project(2011CB605801)supported by the National Basic Research Program of China;Projects(2012M511752,2013T607767)supported by the China Postdoctoral Science Foundation;Project(2012QNZT004)supported by the Fundamental Research Funds for the Central Universities of China;Project supported by the Freedom Explore Program of Central South University,China

摘　　要：A dense ZrC coating with the thickness of 130 μm is prepared on graphite by reactive melt infiltration.XRD and SEM analyses show that the phase composition of the coating is ZrC and it adheres well with the substrate.The influence of ZrC coating on mechanical properties of the graphite was investigated by compression tests and the results show that after the coating process,the compression strength of the coated sample is improved by 13.64% as compared with graphite sample.The improvement of the compression strength for ZrC coated sample can be associated to the increased density and the ZrC particle reinforcement due to the infiltration and reaction of the melted Zr with carbon substrate in the coating process.A dense ZrC coating with the thickness of 130 μm is prepared on graphite by reactive melt infiltration.XRD and SEM analyses show that the phase composition of the coating is ZrC and it adheres well with the substrate.The influence of ZrC coating on mechanical properties of the graphite was investigated by compression tests and the results show that after the coating process,the compression strength of the coated sample is improved by 13.64% as compared with graphite sample.The improvement of the compression strength for ZrC coated sample can be associated to the increased density and the ZrC particle reinforcement due to the infiltration and reaction of the melted Zr with carbon substrate in the coating process.

关 键 词：GRAPHITE compression strength COATING ZRC 

分 类 号：O613.71[理学—无机化学] TQ630.7[理学—化学]