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| Characterization of SiC Ceramic Joints Brazed Using Au-Ni-Pd-Ti High-Temperature Filler Alloy | |
| He, Huamin; Lu, Chuanyang; He, Yanming; Zheng, Wenjian; Yang, Jianguo; Wang, Limei; Sun, Yuan; Gao, Zengliang | |
| 2019-03-20 | |
| Source Publication | MATERIALS
 |
| ISSN | 1996-1944 |
| Volume | 12Issue:6 |
| Abstract | In this work, (Au79Ni17Pd4)(96)Ti-4 (wt.%) filler alloy was designed and employed to join SiC ceramics. The effects of brazing temperature and soaking time on the microstructure and fracture morphology of joints were investigated. The results show that the joint obtained can be described as SiC/reaction layer/braze/reaction layer/SiC. The reaction layer was composed of TiC and Au (Si, Ti). The wettability of the filler alloy toward the SiC ceramics was analyzed. The braze zone was mainly constituted by Pd2Si, Ni2Si, and Au (Ni, Si). A large number of nano-sized TiC particles were distributed within the Au (Ni, Si) layer. The formation mechanism of the braze containing different phases was discussed. The brazing temperature and soaking time had a significant effect on the reaction layer at the SiC/braze interface and TiC particles within the Au (Ni, Si) layer, while they showed a negligible effect on the Pd2Si and Ni2Si within the braze. The inherent reason was also clarified in detail. The joint fractography indicated that a good bonding was achieved between the filler alloy and SiC, while joint fracture was primarily induced by the thermal stresses residing after the brazing cycle. |
| Keyword | SiC ceramic high-temperature brazing microstructure residual stress |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000464359900008 |
| Publisher | MDPI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/81274 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | He, Huamin,Lu, Chuanyang,He, Yanming,et al. Characterization of SiC Ceramic Joints Brazed Using Au-Ni-Pd-Ti High-Temperature Filler Alloy[J]. MATERIALS,2019,12(6). |
| APA | He, Huamin.,Lu, Chuanyang.,He, Yanming.,Zheng, Wenjian.,Yang, Jianguo.,...&Gao, Zengliang.(2019).Characterization of SiC Ceramic Joints Brazed Using Au-Ni-Pd-Ti High-Temperature Filler Alloy.MATERIALS,12(6). |
| MLA | He, Huamin,et al."Characterization of SiC Ceramic Joints Brazed Using Au-Ni-Pd-Ti High-Temperature Filler Alloy".MATERIALS 12.6(2019). |
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