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Mechanism of Alumina Ceramics with Ag-CuO-B2O3 Filler via Reactiver Air Brazing
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Xinyue LI1, Jian LI1, 2, Jiankang ZHANG3, Panpan LIN1, Tiesong LIN1, Peng HE1
Journal of the Chinese Ceramic Society | 2022, 50(3) : 704 - 712
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Journal of the Chinese Ceramic Society | 2022, 50(3): 704-712
• Research Articles •
Mechanism of Alumina Ceramics with Ag-CuO-B2O3 Filler via Reactiver Air Brazing
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Xinyue LI1, Jian LI1, 2, Jiankang ZHANG3, Panpan LIN1, Tiesong LIN1, Peng HE1
Affiliations
  • 1.Harbin Institute of Technology State Key Laboratory of Advanced Welding and Joining, Harbin 150001, China
  • 2.Naughty Officer School of Army Armored Force Academy, Changchun 130117, China
  • 3.Sino-Platinum Metals CO., LTD. Kunming 650000, China

    • LI Xinyue(1998-), female, Master candidate. E-mail:

About Author:

LI Xinyue(1998-), female, Master candidate. E-mail:

Published: 2022-03-20 doi: 10.14062/j.issn.0454-5648.20210500
Outline
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Alumina ceramics were joined with Ag-10CuO-10B2O3 filler via reactiver air brazing for the formation of whiskers (Cu2Al6B4O17) in the joints. The effects of brazing temperature and holding time on the microstructure, properties of the joints and the whisker structure were investigated. The results show that Al2O3 reacts with CuO and B2O3 to form Cu2Al6B4O17 whiskers in the brazing process, thus obtaining a reliable joint with the superior performance. At the holding time of 60 min and the brazing temperature of > 950 ℃, an effective connection of Al2O3 ceramic joint can be realized. The center area of the brazing joint is mainly Ag, while the interface at the both sides of the joint is composed of CuO、Cu3B2O6 phase and Cu2Al6B4O17 whiskers. The shear strength of the joint increases with the increase of the brazing temperature. The whiskers become thick and the adhesion occurs when the brazing temperature is > 1 050 ℃, thus reducing the strengthening effect on the joint and the shear strength of the joint. The whiskers decompose into some lamellar products, and the shear strength of the joint decreases when the brazing temperature is >1 100 ℃. The shear strength of the joint prepared under optimum process parameters (i.e., at 1 000 ℃ for 60 min) can reach 86.7 MPa, and the fracture occurs in the weld nearby alumina ceramic base material.

alumina ceramics  /  silver based composite filler  /  reactiver air brazing  /  copper aluminum borate whiskers  /  reaction mechanism
李昕悦, 李健, 张健康, 林盼盼, 林铁松, 何鹏. Ag-CuO-B2O3钎料空气反应钎焊连接Al2O3陶瓷机理. 硅酸盐学报, 2022 , 50 (3) : 704 -712 . DOI: 10.14062/j.issn.0454-5648.20210500
Xinyue LI, Jian LI, Jiankang ZHANG, Panpan LIN, Tiesong LIN, Peng HE. Mechanism of Alumina Ceramics with Ag-CuO-B2O3 Filler via Reactiver Air Brazing[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (3) : 704 -712 . DOI: 10.14062/j.issn.0454-5648.20210500
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Year 2022 volume 50 Issue 3
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Article Info
doi: 10.14062/j.issn.0454-5648.20210500
  • Receive Date：2021-06-22
  • Online Date：2026-10-22
  • Published：2022-03-20
Article Data
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History
  • Received：2021-06-22
  • Revised：2021-07-07
Funding
Affiliations
    1.Harbin Institute of Technology State Key Laboratory of Advanced Welding and Joining, Harbin 150001, China
    2.Naughty Officer School of Army Armored Force Academy, Changchun 130117, China
    3.Sino-Platinum Metals CO., LTD. Kunming 650000, China

Corresponding:

LIN Panpan(1987-), female, Associate Profsessor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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