| 铜合金表面添加SiC晶须的Ni-Cu激光熔覆层 |
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| 引用本文： | 董江,刘芳,陈岁元,刘常升.铜合金表面添加SiC晶须的Ni-Cu激光熔覆层[J].东北大学学报(自然科学版),2009,30(1):79-82. |
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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： | 1. 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
2. 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，上海宝钢集团公司资助项目，国家自然科学基金 |
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| 摘 要： | 用5 kW CO2激光器,通过优化激光工艺参数,在结晶器用铜合金表面预置添加SiC晶须的镍基自熔合金(Ni1015)粉,制备出表面平整、组织均匀致密、无气孔和裂纹等缺陷、与基体为冶金结合的Ni-Cu激光熔覆层.借助OM,SEM和显微硬度计等分析测定了涂层的显微组织形貌、组织成分和截面显微硬度.结果表明:添加SiC晶须的Ni-Cu涂层比单纯的Ni-Cu涂层的显微组织明显得到细化,涂层的显微硬度高出150HV左右,是铜合金基体(85 HV)的3.7倍,从而能够提高结晶器的使用性能.
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| 关 键 词： | 铜 CO2激光器 Ni-Cu激光熔覆层 SiC晶须 |
Preparation of SiC Whiskers Pre-added Ni-based Cladding on Cu Alloy Surface by Laser Deposition |
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| DONG Jiang,LIU Fang,CHEN Sui-yuan,LIU Chang-sheng.Preparation of SiC Whiskers Pre-added Ni-based Cladding on Cu Alloy Surface by Laser Deposition[J].Journal of Northeastern University(Natural Science),2009,30(1):79-82. |
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| Authors: | DONG Jiang LIU Fang CHEN Sui-yuan LIU Chang-sheng |
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| Institution: | 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: | To prepare the SiC whiskers pre-added wear-resistant Ni-based cladding on copper alloy substrate for mold making,a 5 kW continuous wave CO2 laser was used with the deposition process parameters optimized.A Ni-Cu based cladding was thus deposited,where the powdered Ni1015 was provided for the laser cladding process to form a smooth surface layer bonded metallurgically with Cu substrate,whose grain-refining microstructure is homogeneous,compact,void-free and crack-free.Tested by OM,SEM and micro Vickers,the r... |
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| Keywords: | Cu CO2 laser Ni-Cu cladding SiC whiskers |
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