Ag-Cu钎料与双相陶瓷透氧膜的润湿和界面反应研究

doi:10.15541/jim20150551

无机材料学报 ›› 2016, Vol. 31 ›› Issue (6): 607-612.DOI: 10.15541/jim20150551 CSTR: 32189.14.10.15541/jim20150551

Ag-Cu钎料与双相陶瓷透氧膜的润湿和界面反应研究

张莉莉, 李可, 于称称, 张玉文, 吴成章, 丁伟中

(上海大学省部共建高品质特殊钢冶金与制备国家重点实验室, 上海 200072)

收稿日期:2015-11-09 修回日期:2015-12-23 出版日期:2016-06-20 网络出版日期:2016-05-19
作者简介:张莉莉(1991–), 女, 硕士研究生. E-mail: springzlli@163.com
基金资助:
国家自然科学基金(51174133, 51274139);国家杰出青年科学基金(51225401)

Wetting Properties and Interface Reaction Mechanism of Ag-Cu Brazes on Dual-phase Membrane Ceramic

ZHANG Li-Li, LI Ke,YU Chen-Chen, ZHANG Yu-Wen, WU Cheng-Zhang, DING Wei-Zhong

(State Key Laboratory of Advanced Special Steels, Shanghai University, Shanghai 200072, China)

Received:2015-11-09 Revised:2015-12-23 Published:2016-06-20 Online:2016-05-19
About author:ZHANG Li-Li. E-mail: springzlli@163.com
Supported by:
National Natural Science Foundation of China (51174133, 51274139);National Science Fund for Distinguished Young Scholars (51225401)

摘要/Abstract

摘要：

用座滴法测试Ag-Cu合金钎料对Ce_0.8Gd_0.2O_2-_δ-NdBaCo₂O₅₊_δ(CGO-NBCO)双相透氧膜的润湿性, 利用SEM-EDS分析润湿和界面反应机理。结果表明: 空气条件下Ag-Cu合金与CGO-NBCO间的润湿遵从界面反应润湿机制。随着Cu含量的增加, Ag-Cu合金对透氧膜润湿性能提高, Cu含量为6.6mol%~15.8mol%时, 润湿角在35°~20°左右。在润湿界面处出现Cu氧化物的富集, 并且在透氧膜侧生成一层由Cu氧化物和CGO-NBCO双相透氧膜反应产生的Ba-Cu-O、Co-Cu-O和Nd-Ce-Cu-O等复杂氧化物相构成的产物层, 新的界面反应层的生成有利于Ag基合金钎料的润湿, 改善了钎料的润湿性能。

关键词: Ag-Cu合金, CGO-NBCO双相透氧膜, 润湿, 界面反应

Abstract:

A reactive air brazing Ag-CuO alloy was evaluated for brazing dual phase oxygen membrane Ce_0.8Gd_0.2O_2-_δ- NdBaCo₂O₅₊_δ (CGO-NBCO). Contact angle tests were observed between Ag-Cu brazes and CGO-NBCO in air and the interfacial microstructures of the used samples were evaluated by SEM. The results indicate that the wetting angle decreases from 35° to 20° with the content of Cu increased from 6.6mol% to 15.8mol%. It is found that there are copper oxide-enriched zones formed in the junction of the alloy and substrate. The wettability between Ag-CuO alloy and oxygen membrane CGO-NBCO is improved due to the interfacial reaction between Cu oxides in braze and the surface layers of CGO-NBCO substrates to form compounds of Ba-Cu-O, Co-Cu-O and Nd-Ce-Cu-O oxides. The new formed interface reaction layers promote the wettability of the rest braze.

Key words: Ag-Cu alloy brazing filler, dual-phase membranes ceramic, wettability, interface reaction

中图分类号:

TQ174

张莉莉, 李可, 于称称, 张玉文, 吴成章, 丁伟中. Ag-Cu钎料与双相陶瓷透氧膜的润湿和界面反应研究[J]. 无机材料学报, 2016, 31(6): 607-612.

ZHANG Li-Li, LI Ke,YU Chen-Chen, ZHANG Yu-Wen, WU Cheng-Zhang, DING Wei-Zhong. Wetting Properties and Interface Reaction Mechanism of Ag-Cu Brazes on Dual-phase Membrane Ceramic[J]. Journal of Inorganic Materials, 2016, 31(6): 607-612.

图/表 6

表1 Ag-Cu钎料成分/mol%

Table 1 Composition of Ag-Cu brazes/mol%

Braze	Cu	Ag
Ag	0	100
Ag -6.6Cu	6.6	93.4
Ag -11.0Cu	11.0	89.0
Ag -15.8Cu	15.8	84.2

图1 CGO-NBCO的XRD图谱

Fig. 1 XRD pattern of CGO-NBCO

图2 不同温度下Ag-Cu合金与CGO-NBCO的润湿角

Fig. 2 Contact angles between Ag-Cu and CGO-NBCO as a function of temperature

图3 Ag-Cu钎料与CGO-NBCO双相透氧膜间润湿界面形貌

Fig. 3 Morphologies of the interfaces between Ag-Cu brazes and CGO-NBCO membrane after wetting experiments. (a) Ag; (b) Ag-6.6Cu; (c) Ag-11Cu; (d) Ag-15.8Cu

图4 不同Ag-Cu钎料与CGO-NBCO双相膜润湿界面处面扫描能谱分析

Fig. 4 EDS analyses of the interface between Ag-Cu brazes and CGO-NBCO membrane

图5 Ag-CuO相图[14]

Fig. 5 Pseudobinary Ag-CuO phase diagram[14]

参考文献 14

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Ag-Cu钎料与双相陶瓷透氧膜的润湿和界面反应研究

Wetting Properties and Interface Reaction Mechanism of Ag-Cu Brazes on Dual-phase Membrane Ceramic

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