Joining of CVD-SiC coated and uncoated fibre reinforced ceramic matrix composites with pre-sintered Ti₃SiC₂ MAX phase using Spark Plasma Sintering

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• 作者：Peter Tatarko^a ; ^{tatarko.peter@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Valentina Casalegno^b ; Chunfeng Hu^c ; Milena Salvo^b ; Monica Ferraris^b ; Michael J. Reece^a ; ^{m.j.reece@qmul.ac.uk" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Ceramic matrix composites ; Joining ; MAX phase ; CVD-SiC coating ; Spark Plasma Sintering
• 刊名：Journal of the European Ceramic Society
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：36
• 期：16
• 页码：3957-3967
• 全文大小：4310 K

文摘

CVD-SiC coated and uncoated ceramic matrix composites (C_f/SiC and SiC_f/SiC) were joined to their counterparts with a pre-sintered Ti₃SiC₂ foil using Spark Plasma Sintering. For the first time pre-sintered Ti₃SiC₂ foil was used as a joining filler. The joining parameters were carefully selected to avoid the decomposition of Ti₃SiC₂ and the reaction between the joining filler and the CVD-SiC coating, which would have deteriorated the oxidation protective function of the coating. Conformal behaviour of the Ti₃SiC₂ foil during the diffusion joining and the infiltration of the joining filler into the surface cracks in the CVD β-SiC coating allowed the filler to be more integrated with the matrix material. While diffusion bonding occurred during joining of the coated composites, a combination of both solid-state reaction and diffusion bonding was observed for the uncoated C_f/SiC composites. This produced the lower shear strength (19.1 MPa) when compared to the diffusion bonded CVD-SiC coated C_f/SiC (31.1 MPa).