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文摘
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采用电沉积非晶态Cr-C合金技术，获得了镀态硬度为1100 HV的高硬度镀层。X-射线衍射分析和扫描电镜结果表明，镀层在镀态具有较高的硬度是由于镀层的非晶态Cr-C合金结构。热处理温度在500 ℃以下时，镀层硬度随温度升高而升高，是由于Cr的微晶化和Cr_7C_3、Cr_(23)C_6等金属间化合物析出的结果。500 ℃以上，镀层表面因高温氧化部分塌陷并呈疏松状态，镀层硬度迅速下降。 |
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其他语种文摘
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The plating with high hardness of 1100HV was obtained by electrodepositing amorphous Cr-C alloy coating technology. The structure and surface morphology of amorphous Cr-C alloy plating were studied using XRD and SEM. Results showed that microhardness of coating increased with temperature rising for microcrylization of Cr plating and formation of intermetallic compound Cr_(23)C_6 and Cr_7C_3 when heat treatment temperature less than 500 ℃. As heat treatment temperature was over than 500 ℃ the coating surface collapsed and became a loose porous structure because of partly high temperature oxidation, and microhardness decreased rapidly with temperature increasing. |
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来源
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材料保护
,2002,35(4):15-16 【扩展库】
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关键词
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电沉积
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非晶态
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Cr-C合金
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硬度
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地址
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1.
天津大学, 金属腐蚀与防护国家重点实验室, 天津, 300072
2.
鞍山钢铁学院, 辽宁, 鞍山, 114002
3.
中国科学院金属研究所, 金属腐蚀与防护国家重点实验室, 辽宁, 沈阳, 110016
4.
天津大学, 天津, 300072
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1001-1560 |
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学科
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化学工业 |
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文献收藏号
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CSCD:959429
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