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擴(kuò)散溫度對(duì)TC4合金表面Cu/Ni復(fù)合鍍層結(jié)構(gòu)及腐蝕性能的影響
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作者單位:

1.中國(guó)石油集團(tuán)石油管工程技術(shù)研究院;2.長(zhǎng)安大學(xué)材料科學(xué)與工程學(xué)院

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國(guó)家重點(diǎn)研發(fā)計(jì)劃(2017YFC0805804),國(guó)家自然科學(xué)基金資助(51471136)


Effect of temperature on the interface structure and corrosion ofCu/Ni coating on TC4 alloy
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School of materials science and engineering,Chang’an University

Fund Project:

The Key Program of the Chinese Academy of Sciences

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    摘要:

    論文采用擴(kuò)散熱處理研究了Cu/Ni/Ti復(fù)合鍍層不同溫度下的擴(kuò)散行為，分析了擴(kuò)散層結(jié)構(gòu)，并討論了擴(kuò)散過程對(duì)鍍層結(jié)構(gòu)及腐蝕性能的影響。結(jié)果表明：由于Cu/Ni/Ti原子之間的互擴(kuò)散，形成穩(wěn)定的擴(kuò)散層，可以有效提高鍍層表面耐蝕性能；隨著熱擴(kuò)散溫度上升到700℃，膜層結(jié)構(gòu)致密，在擴(kuò)散層中形成了NixTiy金屬間化合物及少量的CuxTiy金屬間化合物，鍍層表面的耐蝕性最好；溫度升高到800℃時(shí)，在膜層界面處引發(fā)了Kirkendall效應(yīng)，所形成的Kirkendall空位相互聚集長(zhǎng)大，形成裂紋或孔洞，使得鍍層疏松多孔，從而低了耐蝕性。

    Abstract:

    In this paper, the diffusion behavior of Cu/Ni/Ti atoms at different temperatures was studied by means of diffusion heat treatment. The influence of diffusion process on the structure and corrosion of the coating was also discussed. The results show that the corrosion resistance of the coating surface can be effectively improved with the stable diffusion layer formed by the mutual diffusion of Cu/Ni/Ti atoms. As the thermal diffusion temperature up to 700 ℃, the compact structure of membrane layer, the NixTiy intermetallic compounds and a small amount of CuxTiy intermetallic compounds formed in the diffusion layer, the corrosion resistance of coating on the surface of the best. Temperature to 800 ℃, Kirkendall space grew up together each other, which is formed by the formation of cracks or holes and make coating porous, so as to lower the corrosion resistance, due to Kirkendall effect is triggered by atoms at the interface between Cu/Ni/Ti structure.

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朱麗霞,羅金恒,武剛,李麗鋒,張庶鑫,劉雙雙,陳永楠.擴(kuò)散溫度對(duì)TC4合金表面Cu/Ni復(fù)合鍍層結(jié)構(gòu)及腐蝕性能的影響[J].稀有金屬材料與工程,2019,48(6):1897~1903.[Zhu Lixia, Luo Jinheng, Wu Gang, Li Lifeng, Zhang Shuxin, Liu Shuangshuang, Chen Yongnan. Effect of temperature on the interface structure and corrosion ofCu/Ni coating on TC4 alloy[J]. Rare Metal Materials and Engineering,2019,48(6):1897~1903.]
DOI：10.12442/j. issn.1002-185X.20181211

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  • 收稿日期:2018-12-03
  • 最后修改日期:2019-02-01
  • 錄用日期:2019-02-21
  • 在線發(fā)布日期: 2019-07-30
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