Advanced Search
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

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

More Information
  • Received Date: April 29, 2015
  • 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.
  • Wu S B, Xiong H P, Chen B, et al. Joining of SiO2f/SiO2 composite to Al2O3 ceramic using AgCu-Ti brazing filler metal[J]. Welding in the World, 2017, 61(1): 181-186.
    赵 磊, 张丽霞, 田晓羽, 等. 石英纤维复合材料与因瓦合金的活性胶辅助钎焊连接[J]. 焊接学报, 2010, 31(6): 49-52. Zhao Lei, Zhang Lixia, Tian Xiaoyu, et al. Active cement added brazing of quartz fibers reinforced silica composites to Invar alloy[J]. Transactions of the China Welding Institution, 2010, 31(6): 49-52.
    Chen B, Xiong H P, Mao W, et al. Brazing of SiO2f/SiO2, SiO2f/SiO2/Cu and SiO2f/SiO2/stainless steel joints[J]. Journal of Aeronautical Materials, 2012, 32(1): 35-40.
    赵 磊. SiO2f/SiO2复合材料与Invar合金的钎焊接头界面结构及形成机理[D]. 哈尔滨: 哈尔滨工业大学, 2010.
    张俊杰. SiO2f/SiO2表面生长碳纳米管及与TC4钎焊工艺及机理研究[D]. 哈尔滨: 哈尔滨工业大学, 2012.
    Ferrari A C, Basko D M. Raman spectroscopy as a versatile tool for studying the properties of graphene[J]. Nature Nanotechnology, 2013, 8(4): 235-246.
    Tan P H, Han W P, Zhao W J, et al. The shear mode of multilayer graphene[J]. Nature Materials, 2012, 11(4): 294-300.

Catalog

    Article views (483) PDF downloads (399) Cited by()

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return