| 铜板上激光熔覆制备Co-Ni-Cu梯度涂层 |
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| 引用本文： | 董江,刘芳,陈岁元,刘常升. 铜板上激光熔覆制备Co-Ni-Cu梯度涂层[J]. 东北大学学报(自然科学版), 2008, 29(11): 1581-1584. DOI: - |
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| 作者姓名： | 董江 刘芳 陈岁元 刘常升 |
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| 作者单位： | 东北大学,材料各向异性与织构教育部重点实验室,辽宁,沈阳,110004;大连交通大学,材料学院,辽宁,大连,116028 |
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| 基金项目： | 国家自然科学基金与上海宝山钢铁集团联合资助项目 |
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| 摘 要： | 用10 kW CO2激光器,通过优化激光快速熔覆工艺参数,先在铜合金上制备镍基韧性过渡层,再在其表层采用同步送粉工艺,在上述镍基涂层表面制备了结合良好且组织细小致密、无缺陷的钴基合金涂层,成功制备了Co-Ni-Cu梯度涂层.铜基体-镍基过渡层-钴基工作层的成分、组织和热物理性能呈现梯度分布,使熔覆过程中的热应力被缓解,完全避免了裂纹的产生.M7C3和M23C6型碳化物及钴基固溶体的形成使钴基工作层显微硬度高达655 HV,是铜合金硬度(90 HV)的7.3倍,而且从铜合金基体至镍基过渡层再到钴基工作层,显微硬度也呈梯度平缓增大,因此涂层具有无裂纹、内韧外硬的特性.
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| 关 键 词： | 铜 激光熔覆 功能梯度涂层 镍基合金 钴基合金 |
Preparation of Co-Ni-Cu Gradient Coatings by CO2 Laser Cladding on Copperplate |
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| DONG Jiang,LIU Fang,CHEN Sui-yuan,LIU Chang-sheng. Preparation of Co-Ni-Cu Gradient Coatings by CO2 Laser Cladding on Copperplate[J]. Journal of Northeastern University(Natural Science), 2008, 29(11): 1581-1584. DOI: - |
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| Authors: | DONG Jiang LIU Fang CHEN Sui-yuan LIU Chang-sheng |
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| Affiliation: | DONG Jiang1,LIU Fang2,CHEN Sui-yuan1,LIU Chang-sheng1(1.Key Laboratory for Anisotropy & Texture of Materials,Ministry of Education,Northeastern University,Shenyang 110004,China,2.School of Materials,Dalian Jiaotong University,Dalian 116028,China.) |
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| Abstract: | A 10 kW CO2 laser was used to prepare the Ni-Cu toughness transition coatings on copper substrate with the fast laser cladding process parameters optimized. Then,a Co-base coating was deposited on the transition coating surface by powder fed for laser cladding to form a Co-Ni-Cu functional gradient coating(FGC) whose microstructure is fine,dense and defect-free.The vertical graded distribution of the composition,structure and thermal properties of the coating composed of 3 layers,i.e.,the copper substrate,N... |
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| Keywords: | Cu laser cladding functional gradient coating Ni-base alloy Co-base alloy |
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