| IF钢表面激光熔覆Co基合金/SiCp涂层的研究 |
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| 引用本文： | 李明喜,何宜柱,孙国雄.IF钢表面激光熔覆Co基合金/SiCp涂层的研究[J].激光技术,2003,27(2):119-121. |
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| 作者姓名： | 李明喜 何宜柱 孙国雄 |
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| 作者单位： | 1.安徽工业大学激光加工研究中心, 马鞍山, 243002; |
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| 基金项目： | 中韩政府间国际合作项目及安徽省科技厅中美国际合作项目. |
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| 摘 要： | 采用5kWCO2激光器在IF钢表面激光熔覆CoCrWNiSi合金/SiCp陶瓷涂层。利用光学显微镜、扫描电镜、X射线衍射仪分析了熔覆层的相结构和凝固组织特征。对熔覆层的耐磨性进行了试验。结果表明,熔覆层细小均匀,与基体搭接处为平面、胞状晶,表层为细密的枝晶。熔覆层的相结构为γ-Co及Si2W,CoWSi,Cr3Si,CoSi2等相。SiC的加入提高了熔覆层的耐磨性。
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| 关 键 词： | IF钢 激光熔覆 SiC陶瓷 显微组织 |
| 文章编号： | 1001-3806(2003)02-0119-03 |
| 收稿时间： | 2002/5/22 |
| 修稿时间： | 2002年5月22日 |
Study of laser cladded Co-based alloy/SiCp coatings on IF steel |
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| Li Mingxi ,He Yizhu ,Sun Guoxiong.Study of laser cladded Co-based alloy/SiCp coatings on IF steel[J].Laser Technology,2003,27(2):119-121. |
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| Authors: | Li Mingxi He Yizhu Sun Guoxiong |
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| Affiliation: | Li Mingxi 1,2,He Yizhu 1,Sun Guoxiong 2 |
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| Abstract: | Coatings,made of Co-Cr-W-Ni-Sialloy+20% SiCp,deposited by laser cladding on IF steel are introduced. Cross section of such coatings has been examined to reveal their microstructure using optical moic-roscope,scanning electron and XRD. There existed some crystallization morphologies in different regions,such as planar,cellar (at the bonding area),columnar and dendrite (at the center and near the surface). XRD showed that the primary phase γ-Co dendrite and Si2W,CoWSi,Cr3Si,CoSi2 existed in the coatings. The results also showed that the wear resistance of the clad layer improved by adding SiCp. |
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| Keywords: | IF steel laser cladding SiC cer amic microstructure |
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