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汞齊法制備鈾保護(hù)涂層
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Preparation of Protective Coatings for Uranium with Amalgam
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    摘要:

    選用Zn、Sn、Au三種金屬制備汞齊，在鈾表面開(kāi)展了汞齊法涂層制備工藝研究，利用SEM和EDS對(duì)涂層進(jìn)行了表征，主要研究汞齊法在鈾表面制備涂層的工藝，包括鍍前處理、氧化層對(duì)涂層性能的影響。結(jié)果表明：采用汞齊法在鈾表面制備金屬涂層的方法是可行的，在輕微氧化的樣品表面能利用該方法制得結(jié)合良好的涂層，氧化層在制備過(guò)程中彌散于涂層內(nèi)。1:1 HNO3去除氧化層后，可以制備界面均勻、結(jié)合緊密的高質(zhì)量涂層。可單次制備20~50 μm范圍的Zn、Sn涂層，可多次制備較厚的Au涂層。

    Abstract:

    Preparation of protective coatings for uranium with amalgam formed by Zn, Sn and Au reacting with Hg respectively was investigated. The coatings were characterized by scanning electron microscope (SEM) and X-ray energy dispersive spectroscope (EDS). Effects of pretreatment and oxide layer on coatings were also studied. The results show that it is feasible to prepare coatings on uranium surface with amalgam. The thin oxide layer on uranium surface has less effects on the combination between coating and uranium, because the oxide can disperse in the coating during the preparation and fresh uranium was faced to amalgam. 1:1 HNO3 can get rid of the oxide effectively, and better combination between coating and uranium can be obtained. 20~50 μm thickness coatings can be prepared in a single time to Zn and Sn, but to Au, it is necessary to obtain a thick coating repeatedly.

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沈崇雨,李 炬,李 嶸,陳 亮,郎定木.汞齊法制備鈾保護(hù)涂層[J].稀有金屬材料與工程,2013,42(2):377~381.[Shen Chongyu, Li Ju, Li Rong, Chen Liang, Lang Dingmu. Preparation of Protective Coatings for Uranium with Amalgam[J]. Rare Metal Materials and Engineering,2013,42(2):377~381.]
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  • 收稿日期:2012-02-03
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