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Zr-Al合金表面鋅系化學(xué)轉(zhuǎn)化膜的制備及研究
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國家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃（973計(jì)劃）資助項(xiàng)目（2010CB731604）；河北省博士后科研項(xiàng)目


Zinc Chemical Conversion Film on the Surface of Zr-Al Alloy
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    摘要:

    利用化學(xué)轉(zhuǎn)化法對(duì)鑄態(tài)Zr-Al合金進(jìn)行表面處理。在經(jīng)過除油、酸洗、化學(xué)轉(zhuǎn)化等一系列處理工序后，在Zr-Al合金表面生成鋅系化學(xué)轉(zhuǎn)化膜。利用掃描電鏡和X射線衍射儀對(duì)合金基體及化學(xué)轉(zhuǎn)化膜的化學(xué)組成及微觀結(jié)構(gòu)進(jìn)行了研究。結(jié)果表明：Zr-Al合金由α相(α-Zr)和β相(Zr2Al)組成，其中基體為α相，β相沿晶界非連續(xù)分布；經(jīng)鋅系化學(xué)轉(zhuǎn)化處理，合金表面形成以Zn3(PO4)2·H2O和ZnZr(PO4)2·2H2O為主要成分的鋅系化學(xué)轉(zhuǎn)化膜，該膜結(jié)晶團(tuán)簇較細(xì)小，化學(xué)轉(zhuǎn)化膜表面顆粒分布均勻，由細(xì)小的片狀晶體顆粒密排堆積而成，無明顯孔隙缺陷，膜層與基體結(jié)合良好。探討了Zr-Al合金上鋅系化學(xué)轉(zhuǎn)化膜的形成機(jī)理。

    Abstract:

    Chemical conversion treatment on as-cast Zr-Al alloy was studied. After degreasing, pickling and chemical conversion treatment, a zinc chemical conversion film was fabricated on the surface of Zr-Al alloy. The microstructure and the phase composition of Zr-Al alloy and the chemical conversion film were observed using SEM and XRD, respectively. The results show that as-cast Zr-Al alloy is composed of α-Zr and Zr2Al, where α-Zr is substrate and Zr2Al spreads along grain boundaries discontinuously. A Zn3(PO4)2·H2O and ZnZr(PO4)2·2H2O chemical conversion film is formed by treatment in the chemical conversion solution successfully. The film consists of small crystal particles densely. It is uniform, compact and has no obvious defects. The forming mechanism of zinc chemical conversion film on Zr-Al alloy was discussed.

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國 棟,肖福仁,李 強(qiáng),李建輝,馬 靜,毛 磊. Zr-Al合金表面鋅系化學(xué)轉(zhuǎn)化膜的制備及研究[J].稀有金屬材料與工程,2014,43(4):982~985.[Guo Dong, Xiao Furen, Li Qiang, Li Jianhui, Ma Jing, Mao Lei. Zinc Chemical Conversion Film on the Surface of Zr-Al Alloy[J]. Rare Metal Materials and Engineering,2014,43(4):982~985.]
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  • 收稿日期:2013-04-19
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  • 在線發(fā)布日期: 2014-07-30
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