| 强化核阀密封面的NOREM02激光熔覆层性能研究 |
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| 引用本文： | 刘双,石世宏,魏宏璞,刘秀波,傅戈雁,李春生,蔡齐飞.强化核阀密封面的NOREM02激光熔覆层性能研究[J].激光与红外,2010,40(4):365-369. |
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| 作者姓名： | 刘双 石世宏 魏宏璞 刘秀波 傅戈雁 李春生 蔡齐飞 |
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| 作者单位： | 苏州大学机电工程学院,江苏,苏州,215021 |
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| 基金项目： | 江苏省自然科学基金(No.BK2006052);;苏州市科技计划项目(No.SJ0825)资助 |
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| 摘 要： | 选用无钴NOREM02铁基粉末在不锈钢基体上进行激光熔覆。对在不同工艺参数下熔覆层形貌、微观组织及显微硬度进行观察和测试,并进行了物相分析。采用静态浸泡法对NOREM02铁基激光熔覆层的耐腐性进行研究,并与Stellite6钴基熔覆层和不锈钢基体对比。结果表明:NOREM02铁基粉末在优化的激光熔覆工艺参数下,可获得表面连续光滑,宽度和厚度均匀的熔覆层。该熔覆层组织致密,晶粒细小,结合区牢固,显微硬度600 HV0.5以上,具有强韧两相组成(奥氏体和M7C3)的微观特征。在10%H2SO4和10%NaC l溶液中铁基熔覆层抗腐蚀性能接近钴基熔覆层。
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| 关 键 词： | 核电阈门密封面 激光熔覆 无钴铁基粉末 显微组织 耐腐蚀性 |
Performance of Fe-based hardfacing alloys in plant valves with laser cladding |
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| LIU Shuang,SHI Shi-hong,WEI Hong-pu,LIU Xiu-bo,FU Ge-yan,LI Chun-sheng,CAI Qi-fei.Performance of Fe-based hardfacing alloys in plant valves with laser cladding[J].Laser & Infrared,2010,40(4):365-369. |
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| Authors: | LIU Shuang SHI Shi-hong WEI Hong-pu LIU Xiu-bo FU Ge-yan LI Chun-sheng CAI Qi-fei |
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| Institution: | School of Mechanical and Electrical Engineering;Soochow University;Suzhou 215021;China |
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| Abstract: | NOREM02 Fe-based alloy was selected to produce hard coating by laser cladding on the stainless steel substrate,for its good evaluation in some foreign hardfacing applications to replace cobalt-based alloys.The macro morphology,microstructure and micro-hardness of the single passes,manufactured with different processing parameters,were observed and measured,and moreover the phases of coatings were analyzed.The corrosion resistance of Fe-based coatings was investigated with the method of static immersion.The ... |
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| Keywords: | sealing surfaces of nuclear plant valves laser cladding cobalt-free Fe-based alloys microstructure corrosion resistance |
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