钎焊参数对Al<sub>2</sub>O<sub>3</sub>陶瓷/304不锈钢接头组织和性能的影响

doi:10.11896/cldb.21090089

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Abstract Al₂O₃ ceramic and 304 stainless steel were brazed by Ag-Cu-Ti filler alloy. The effects of brazing temperature and holding time on the microstructure and mechanical properties of Al₂O₃ ceramic/304 stainless steel joint were investigated. The results indicate that the microstructure of the joint was Al₂O₃/Cu₃Ti₃O＋TiCu/Ag(s,s)＋Cu(s,s)＋TiCu/Cu0.8Fe0.2Ti/Fe-Cr/304. The shear strength of the joint reached 130.54 MPa when brazed at 900 ℃ and holding time of 10 min. Thickness of the Cu₃Ti₃O was 2.5 μm. When the temperature is low and the holding time is short, the Cu₃Ti₃O reaction layer is thin, resulting in weak bonding between Al₂O₃ ceramic and filler layer. With increase of temperature and holding time, the thickness of the Cu₃Ti₃O reaction layer is too thick, which weakens the plastic deformation ability of the joint. The thickness of Cu₃Ti₃O reaction layer is the key to affecting quality of the joint.

Key words： Al₂O₃ ceramic 304 stainless steel brazing microstructure mechanical property

Published: 10 January 2023 Online: 2023-01-31

CLC number:	TG425
	TG454

Fund:Natural Science Foundation of Hebei Province (E2021202177).

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	Articles by authors
	XUE Haitao
	LI Tao
	GUO Weibing
	CHEN Cuixin
	ZHAO Jianglong
	DING Zhijie

Cite this article:

XUE Haitao,LI Tao,GUO Weibing, et al. Effect of Brazing Parameters on Microstructure and Properties of Al₂O₃ Ceramic/304 Stainless Steel Brazed Joints[J]. Materials Reports, 2023, 37(1): 21090089-5.

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http://www.mater-rep.com/EN/10.11896/cldb.21090089 OR http://www.mater-rep.com/EN/Y2023/V37/I1/21090089

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