铸造铝合金激光表面改性金属-陶瓷梯度层 | |
蔡珣; 赵涛; 陈秋龙; 钱红斌 | |
刊名 | 机械工程材料
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2002 | |
卷号 | 26期号:1页码:25 |
其他题名 | Metal-ceramic Surface Gradient Layer Produced by Laser Cladding on Al-Si Allog |
中文摘要 | 利用5kW CO_2横流激光器对铸铝合金表面先后预置不同成分粉末进行两次激光辐照扫描,成功地制备了Ni/WC和Cr/WC表面改性梯度层,并运用XRD、EDXS和SEM方法对激光表面改性梯度层的组织结构进行观察分析。发现经第二次激光扫描过程后在激光改性梯度层中因合金元素之间的反应,产生了大量的金属间化合物,激光改性梯度层的组织除alpha-Al、Si和WC外,在Ni/WC激光改性梯度层中,金属间化合物主要为Al_3Ni_2和Ni_3Al, Cr/WC激光改性梯度层的金属化合物为Al_9Cr_4和Cr_9Al |
英文摘要 | Ni/WC and Cr/WC laser surface modified gradient layers were prepared using twice laser scanning technique. The microstructure of the laser surface modified gradient layers was investigated using XRD, EDXS and SEM. It was found that there were intermetallic compounds in the laser surface gradient layers due to the interactions between the metal elements during the second laser cladding. The microstructure of the modified gradient layers was composed of alpha-Al matrix phase, WC particles and intermetallic compounds. In the surface of NI/WC laser modified gradient layer the intermetallic compound was Al_3Ni_2 and Ni_3Al, while in the surface of Cr/WC laser modified gradient layer there were Al_9Cr_4 and Cr_9Al_(17). Furthermore, the microharness of the gradient layers changed gradually from surface coating to substrate, while there was an abrupt change of mocrohardness in the single laser surface alloying coating. |
收录类别 | CSCD |
语种 | 中文 |
CSCD记录号 | CSCD:1013109 |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.siom.ac.cn/handle/181231/18038] ![]() |
专题 | 上海光学精密机械研究所_精密光电测控研究与发展中心 |
作者单位 | 1.蔡珣, 上海交通大学, 国家教育部高温材料与高温测试重点实验室, 上海 200030, 中国. 2.赵涛, 上海交通大学, 国家教育部高温材料与高温测试重点实验室, 上海 200030, 中国. 3.陈秋龙, 上海交通大学, 国家教育部高温材料与高温测试重点实验室, 上海 200030, 中国. 4.钱红斌, 中国科学院上海光学精密机械研究所, 上海 201800, 中国. |
推荐引用方式 GB/T 7714 | 蔡珣,赵涛,陈秋龙,等. 铸造铝合金激光表面改性金属-陶瓷梯度层[J]. 机械工程材料,2002,26(1):25. |
APA | 蔡珣,赵涛,陈秋龙,&钱红斌.(2002).铸造铝合金激光表面改性金属-陶瓷梯度层.机械工程材料,26(1),25. |
MLA | 蔡珣,et al."铸造铝合金激光表面改性金属-陶瓷梯度层".机械工程材料 26.1(2002):25. |
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