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| 1 | AgCu+SiC复合钎料中SiC含量对Al2O3/TC4接头组织和性能的影响显示文摘采用AgCu+SiC复合钎料钎焊连接了Al2O3陶瓷与TC4钛合金,研究了SiC增强相含量与钎焊温度对接头组织与性能的影响,发现接头的典型组织为Al2O3陶瓷/Ti3Cu3O/Ag基固溶体+Cu基固溶体+TiC+Ti5Si3/TiCu2/TiCu/TC4钛合金.陶瓷一侧的反应层随着钎焊温度的升高而变厚,随着增强相含量的增加而变薄,当增强相含量较少时,反应产物呈弥散分布,当增强含量较多时,反应产物发生了团聚现象.钎焊的反应产物随着钎焊温度的升高由团聚分布变为弥散分布.接头的抗剪强度随着增强相的含量与钎焊温度的升高先增加后降低,当增强相含量为3%(质量分数),钎焊温度为870℃时达到最大,为98 MPa. | 李淳 郑祖金 亓钧雷 冯吉才 曹健 | 2019 | 焊接学报2019，40，12： | 3 |
| 2 | Investigation on induction brazing of profiled cBN wheel for grinding of Ti-6Al-4V显示文摘Profiled monolayer cBN wheel was induction brazed for grinding of titanium dovetail slot in this study.Aimed at acquiring a uniform temperature distribution along the profiled surface and reducing the thermal deformation of the brazed wheel,a finite element model was established to investigate the temperature uniformity during induction brazing.A suitable induction coil and the related working parameters were designed and chosen based on the simulation results.Ag-Cu-Ti alloy and cBN grains were applied in the induction brazing experiment.The results showed geometric deformation of the brazed wheel was no more than 0.01 mm and chemical reaction layer were found on the brazed joint interface.Further validation tests were carried out by grinding of Ti-6 Al-4 V alloy.Compared to the electroplated wheel,the brazed wheel showed better performance such as low specific grinding energy and good ground quality in grinding of Ti-6 Al-4 V alloy.Abrasion wear was found to be the main failure mode for the induction brazed wheel,while adhesion and grains pull-out were the main failure mode for the electroplated wheel. | Qilin LI Kai DING Weining LEI Jiajia CHEN Qingshan HE Zhenzhen CHEN | 2021 | Chinese Journal of Aeronautics2021，34，4： | 2 |
| 3 | Joining of SiO2f/SiO2 composite to Nb using Ag-Cu-In-Ti brazing alloys显示文摘Three compositions of Ag-Cu-In-Ti system brazing alloys were designed for joining SiO2 f/SiO2 ceramic composite to Nb metal.The wettability of the three alloys on the composite was studied with the sessile drop method.The results showed that after heating at 1073 K for 30 min,they exhibited contact angles of 74°,83° and 86°,respectively.The brazing alloys were fabricated into foils by rapid solidification technique.Among the three brazing filler alloys the joints brazed with AgCu-10 In-5 Ti at 1073 K for 10 min presented the maximum average shear strength of 30.9 MPa.During the brazing process the active element Ti diffused strongly from the filler alloy to the composite surface and a reaction layer with a thickness of 2-3 μm was formed.Sound metallurgical bonding was also achieved at the Nb side.The interface structure of the joint brazed with the AgCu-10 In-5 Ti alloy can be described as the following sequence:SiO2 f/SiO2→SiO2+Cu3 Ti3 O→SiO2+TiO+Ti5 Si4→Ag(s,s)+(Cu-Ti)→Nb.However,for the filler alloy with 4.0 wt% Ti content the joint strength was only 15.8 MPa. | Bo Chen Wen-Jiang Zou Wen-Wen Li Shi-Biao Wu Hua-Ping Xiong Xin Wu | 2020 | Journal of Materials Science & Technology2020，47，15： | 1 |
| 4 | Application of Ag-Cu-Ti active metal composite filler in ceramic joining:a review显示文摘As a structural and functional material with excellent properties,ceramics play an extremely important role in a wide range of industries,including life and production.To expand the range of applications for ceramic materials,ceramics are often joined to metals and then used.Among the physical and chemical joining methods of ceramics to metals,the AMB method is efficient and simple,suitable for industrial applications,and has been a hot topic of research.However,due to the problems of residual stresses caused by the large difference in thermal expansion coefficients between ceramic and metal brazing,composite fillers have become a very worthwhile solution by regulating the physical properties of the brazing material and improving the weld structure.This review describes the wetting principle and application of Ag‒Cu‒Ti active metal filler in the field of ceramic joining,with emphasis on the current stage of composite filler,and discusses the influence on the former brazing properties and organization after the introduction of dissimilar materials. | Yuhang Li Jun WANG Ziyan SHEN Hangli Qian Wanliang Zhang Kaiyu Zhang Danqing Ying Qihang Zhou Chengshuang Zhou Lin Zhang | 2023 | Frontiers of Materials Science2023，17，4： | 0 |
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