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Ga2O3對(duì)CsF-RbF-AlF3釬劑在鋁、鋼表面潤(rùn)濕鋪展性能的影響
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南京航空航天大學(xué),南京航空航天大學(xué),南京航空航天大學(xué),南京航空航天大學(xué),南京航空航天大學(xué)

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國(guó)家自然科學(xué)基金項(xiàng)目（面上項(xiàng)目，重點(diǎn)項(xiàng)目，重大項(xiàng)目）；江蘇高校優(yōu)勢(shì)學(xué)科建設(shè)工程項(xiàng)目


Effect of Ga2O3 on the wettability and spreadability of CsF-AlF3 flux on the aluminum and steel
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    摘要:

    本文研究了添加微量Ga2O3的CsF-RbF-AlF3釬劑和Zn-Al釬料在6063鋁合金和Q235低碳鋼上的潤(rùn)濕、鋪展性能的反應(yīng)規(guī)律。試驗(yàn)結(jié)果表明，添加極微量的Ga2O3即能夠顯著促進(jìn)Zn-Al釬料在6063鋁合金和Q235低碳鋼上的潤(rùn)濕、鋪展，其最佳添加量應(yīng)控制在0.001~0.003wt.%范圍。對(duì)釬劑殘?jiān)腦RD分析結(jié)果和化學(xué)反應(yīng)熱力學(xué)計(jì)算表明，微量Ga2O3的添加，一方面能夠促進(jìn)CsF-RbF-AlF3釬劑溶解、反應(yīng)去除6063鋁合金和Q235低碳鋼表面的氧化膜；另一方面，在釬焊過(guò)程中，由于Ga2O3被還原成金屬Ga，Ga元素具有“集膚效應(yīng)”，富集于釬料和母材的界面，大大降低了釬料與母材間的界面張力，從而促進(jìn)了釬料在母材上的潤(rùn)濕、鋪展。

    Abstract:

    Effect of trace amount of Ga2O3 addition on the changes of the wettability and spreadability of CsF-RbF-AlF3 flux and Zn-Al filler metal were investigated on 6063 aluminum alloy and Q235 low-carbon steel. The experimental results indicated that trace amount of Ga2O3 addition in the flux could obviously promote the Zn-Al filler metal to wet and spread on the surface of 6063 aluminum alloy and Q235 low-carbon steel, in which the optimum range of Ga2O3 was 0.001~0.003wt.%. According to the XRD results of the flux residua and the thermodynamic calculation, it could be concluded that the trace amount of Ga2O3 addition could enhance the solubility and reactivity of CsF-RbF-AlF3 flux to the surface oxides on 6063 aluminum alloy and Q235 low-carbon steel. On the other hand, Ga2O3 could also be reduced to Ga. Because of its skin effect, Ga could enrich on the interface of filler metal and base metal and effectively decreased its interfacial tension, which could improve the wettability and spreadability of the filler metal.

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張俊雄,薛松柏,薛鵬,楊金龍,呂兆萍. Ga2O3對(duì)CsF-RbF-AlF3釬劑在鋁、鋼表面潤(rùn)濕鋪展性能的影響[J].稀有金屬材料與工程,2017,46(7):1900~1904.[Zhang Junxiong, Xue Songbai, Xue Peng, Yang Jinlong, Lv Zhaoping. Effect of Ga2O3 on the wettability and spreadability of CsF-AlF3 flux on the aluminum and steel[J]. Rare Metal Materials and Engineering,2017,46(7):1900~1904.]
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  • 收稿日期:2015-03-21
  • 最后修改日期:2015-05-08
  • 錄用日期:2015-06-11
  • 在線發(fā)布日期: 2017-11-14
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