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SiO2f/SiO2复合材料表面碳活化辅助钎料润湿机理

林景煌, 霸金, 亓钧雷, 冯吉才

林景煌, 霸金, 亓钧雷, 冯吉才. SiO2f/SiO2复合材料表面碳活化辅助钎料润湿机理[J]. 焊接学报, 2017, 38(5): 83-86. DOI: 10.12073/j.hjxb.20170518
引用本文: 林景煌, 霸金, 亓钧雷, 冯吉才. SiO2f/SiO2复合材料表面碳活化辅助钎料润湿机理[J]. 焊接学报, 2017, 38(5): 83-86. DOI: 10.12073/j.hjxb.20170518
LIN Jinghuang, BA Jin, QI Junlei, FENG Jicai. Mechanism of activated carbon layer on SiO2f/SiO2 composite to assist brazing alloy wetting[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2017, 38(5): 83-86. DOI: 10.12073/j.hjxb.20170518
Citation: LIN Jinghuang, BA Jin, QI Junlei, FENG Jicai. Mechanism of activated carbon layer on SiO2f/SiO2 composite to assist brazing alloy wetting[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2017, 38(5): 83-86. DOI: 10.12073/j.hjxb.20170518

SiO2f/SiO2复合材料表面碳活化辅助钎料润湿机理

基金项目: 国家自然科学基金资助项目(51575135,U1537206)

Mechanism of activated carbon layer on SiO2f/SiO2 composite to assist brazing alloy wetting

  • 摘要: 针对SiO2f/SiO2复合材料钎焊中存在表面钎料润湿性差、难以获得有效接头的难题,提出一种表面碳活化辅助钎料润湿的方法.利用PECVD方法低温原位在复合材料表面制备极薄的碳活化层,以辅助活性钎料在其表面铺展润湿.研究表明采用该方法可在400℃/15 min条件下即可在SiO2f/SiO2表面制备出碳活化层,且复合材料表面形貌无变化.润湿结果表明碳活化层的引入显著改善了Ag-Cu-Ti钎料在复合材料表面的润湿性,860℃/10 min下润湿角从131°降至27°.碳活化层主要借助碳与活性元素良好的亲和力活化了复合材料表面状态,进而促进活性钎料在其表面铺展润湿.
    Abstract: A new method was proposed to preparation of activated carbon layer on SiO2f/SiO2 composite to assist brazing alloy wetting, in order to solve the problems that poor wettability of brazing alloy on SiO2f/SiO2 and poor performance of joints. PECVD was occupied to preparation of extremely thin activated carbon layer on the surface of SiO2f/SiO2 composite to assist active brazing alloy spreading and wetting. Analysis showed that the method can prepare activated carbon layer on the surface of SiO2f/SiO2 composite at the temperature of 400 ℃ and holding time for 15 min, and the surface morphology of composite showed no obvious changes. Wetting results showed that introducing activate carbon layer can significantly improve the wettability of Ag-Cu-Ti brazing alloy on the surface of SiO2f/SiO2 composite when the wetting angle dropped from 131° to 27° at the temperature of 860 ℃ and holding time for 10 min. Activate carbon layer can promote the wettability of active brazing alloy, because carbon showed good affinity with active elements to activate the surface state of SiO2f/SiO2 composite.
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  • 期刊类型引用(1)

    1. 薛海涛,魏鑫,郭卫兵,张小明. 活性元素Ti和SiO_2界面结合机制的第一性原理计算. 焊接学报. 2020(01): 67-71+100-101 . 本站查看

    其他类型引用(1)

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出版历程
  • 收稿日期:  2015-04-29

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