Joining Strength and Microstructure of Sintered SiC/SiC Joints Prepared by Active Brazing Process

doi:10.3724/SP.J.1077.2009.00297

Abstract

Abstract: Sintered SiC ceramics were brazed with itself by ternary Ag-Cu-Ti filler metal foil. Effects of brazing parameters such as temperature, holding time on joining strength, together with interface microstructure and reaction products were investigated. Experimental results indicate that joining strength has peak value with the increasing of brazing temperature and holding time, and the max fourpoint bending strength of SiC/SiC joints reaches 342MPa. The joining strength increases first with the increasing of brazing temperature and holding time due to thickening of the reaction layer, then decreases due to evaporation of the filler metal. A uniform compact reaction layer of about 1μm thickness is found at the interface between SiC and filler metal, which is formed by the reaction of active element Ti of filler metal and SiC substrate. TiC and Ti₅Si₃ are confirmed as the reactive products by XRD and EDX.

Key words: Ag-Cu-Ti filler metal, SiC, joining strength, microstructure

CLC Number:

TG142

LIU Yan,HUANG Zheng-Ren,LIU Xue-Jian,CHEN Jian. Joining Strength and Microstructure of Sintered SiC/SiC Joints Prepared by Active Brazing Process[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2009.00297.

[1]	TAN Bowen, GENG Shuanglong, ZHANG Kai, ZHENG Bailin. Composition-gradient Design of Silicon Electrodes to Mitigate Mechanochemical Coupling Degradation [J]. Journal of Inorganic Materials, 2025, 40(7): 772-780.
[2]	CHEN Yi, QIU Haipeng, CHEN Mingwei, XU Hao, CUI Heng. SiC/SiC Composite: Matrix Boron Modification and Mechanical Properties [J]. Journal of Inorganic Materials, 2025, 40(5): 504-510.
[3]	GOU Yanzi, KANG Weifeng, WANG Pengren. Influence of Sintering Conditions on Preparation of Nearly Stoichiometric SiC Fibers with Highly Crystalline Microstructure [J]. Journal of Inorganic Materials, 2025, 40(4): 405-414.
[4]	MU Shuang, MA Qin, ZHANG Yu, SHEN Xu, YANG Jinshan, DONG Shaoming. Oxidation Behavior of Yb₂Si₂O₇ Modified SiC/SiC Mini-composites [J]. Journal of Inorganic Materials, 2025, 40(3): 323-328.
[5]	YIN Jie, GENG Jiayi, WANG Kanglong, CHEN Zhongming, LIU Xuejian, HUANG Zhengren. Recent Advances in 3D Printing and Densification of SiC Ceramics [J]. Journal of Inorganic Materials, 2025, 40(3): 245-255.
[6]	MU Haojie, ZHANG Yuanjiang, YU Bin, FU Xiumei, ZHOU Shibin, LI Xiaodong. Preparation and Properties of ZrO₂ Doped Y₂O₃-MgO Nanocomposite Ceramics [J]. Journal of Inorganic Materials, 2025, 40(3): 281-289.
[7]	HOU Jiaqi, CHEN Ruicong, ZENG Yaoying, ZHOU Lei, ZHANG Jiaping, FU Qiangang. Thermal Shock and Ablation Resistance of SiC Coating Repaired by Gaseous Silicon Infiltration [J]. Journal of Inorganic Materials, 2025, 40(2): 168-176.
[8]	LI Wei, XU Zhiming, GOU Yanzi, YIN Senhu, YU Yiping, WANG Song. Preparation and Performance of Sintered SiC Fiber-bonded Ceramics [J]. Journal of Inorganic Materials, 2025, 40(2): 177-183.
[9]	ZHANG Li, GUAN Haoyang, ZHENG Qining, HONG Zhiliang, WANG Jiaxuan, XING Ning, LI Mei, LIU Yongsheng, ZHANG Chengyu. Creep Properties and Damage Mechanisms of SiC_f/SiC-SiYBC Prepared by Melt Infiltration [J]. Journal of Inorganic Materials, 2025, 40(1): 23-30.
[10]	QUAN Wenxin, YU Yiping, FANG Bing, LI Wei, WANG Song. Oxidation Behavior and Meso-macro Model of Tubular C/SiC Composites in High-temperature Environment [J]. Journal of Inorganic Materials, 2024, 39(8): 920-928.
[11]	TAN Min, CHEN Xiaowu, YANG Jinshan, ZHANG Xiangyu, KAN Yanmei, ZHOU Haijun, XUE Yudong, DONG Shaoming. Microstructure and Oxidation Behavior of ZrB₂-SiC Ceramics Fabricated by Tape Casting and Reactive Melt Infiltration [J]. Journal of Inorganic Materials, 2024, 39(8): 955-964.
[12]	FAN Wugang, CAO Xiong, ZHOU Xiang, LI Ling, ZHAO Guannan, ZHANG Zhaoquan. Anticorrosion Performance of 8YSZ Ceramics in Simulated Aqueous Environment of Pressurized Water Reactor [J]. Journal of Inorganic Materials, 2024, 39(7): 803-809.
[13]	CHEN Qian, SU Haijun, JIANG Hao, SHEN Zhonglin, YU Minghui, ZHANG Zhuo. Progress of Ultra-high Temperature Oxide Ceramics: Laser Additive Manufacturing and Microstructure Evolution [J]. Journal of Inorganic Materials, 2024, 39(7): 741-753.
[14]	WANG Kanglong, YIN Jie, CHEN Xiao, WANG Li, LIU Xuejian, HUANG Zhengren. Effect of Particle Grading on Properties of Silicon Carbide Ceramics Prepared by Selective Laser Sintering Printing Combined with Solid-phase Sintering at Atmospheric Pressure [J]. Journal of Inorganic Materials, 2024, 39(7): 754-760.
[15]	JIANG Lingyi, PANG Shengyang, YANG Chao, ZHANG Yue, HU Chenglong, TANG Sufang. Preparation and Oxidation Behaviors of C/SiC-BN Composites [J]. Journal of Inorganic Materials, 2024, 39(7): 779-786.

Joining Strength and Microstructure of Sintered SiC/SiC Joints Prepared by Active Brazing Process

PDF (PC)

Knowledge

Cited

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments