采用激光-感应复合熔覆方法,在黄铜基材表面制备Cu-Fe合金涂层,研究涂层的显微组织与性能特征.结果表明,当激光扫描速度为3000 mm/min、粉末流量为110 g/min时,在黄铜基材上获得表面较光滑、无气孔与裂纹的Cu-Fe合金涂层.另外,Cu-Fe合金在激光-感应复合熔覆过程中发生液相分离,在涂层底部,过饱和的金属基体α-Fe呈平面状与柱状枝晶生长;在涂层中上部,直径不等的球状颗粒α-Fe镶嵌在过饱和的金属基体ε-Cu内,许多细小的白色粒状物ε-Cu在球状颗粒α-Fe内均匀弥散析出,涂层的平均显微硬度相对于基材的提高约2.8倍.
参考文献
| [1] | 赵冬梅,董企铭,刘平,金志浩,康布熙 .高强高导铜合金合金化机理[J].中国有色金属学报,2001,11:21-24.ZHAO Dong-mei,DONG Qi-ming,LIU Ping,JING Zhi-hao,KANG Bu-xi.Mechanism of alloying of copper alloy with high strength and high electrical conductivity[J].The Chinese Journal of Nonferrous Metals,2001,11(S2):21-24.,2001. |
| [2] | 于金库,王庚华,刑广忠,冯皓 .在铜合金上获得Ni-Fe合金镀层的电镀工艺研究[J].燕山大学学报,1999,23(2):123-125.YU Jin-ku,WAN Geng-hua,XING Guang-zhong,FENG Hao.A study of the plating processing about the coating of Ni-Fe alloy on copper alloy substrate[J].Journal of Yanshan University,1999,23(2):123-125.,1999. |
| [3] | 陈健,刘雪飘,梁欢.铜及铜合金表面等离子喷涂的应用进展[J].金属热处理,2010(09):98-103. |
| [4] | 余廷,邓琦林,董刚,杨建国,张伟.钽对激光熔覆镍基涂层的裂纹敏感性及力学性能的影响[J].机械工程学报,2011(22):25-30. |
| [5] | 刘建弟,张述泉,王华明.激光熔覆WC颗粒增强复合涂层的组织及耐磨性[J].中国有色金属学报,2012(09):2600-2607. |
| [6] | LIU Fang,LIU Chang-sheng,CHEN Sui-yuan,TAO Xing-qi,ZHANG Yong .Laser cladding Ni-Co duplex coating on copper substrate[J].Optics and Lasers in Engineering,2010,48:792-799.,2010. |
| [7] | DEHM G,BANBERGER M .Laser cladding of Co-based hardfacing on Cu substrate[J].Journal of Materials Science,2002,37(24):5345-5353.,2002. |
| [8] | CHEN Sui-yuan,LIANG Jing,LIU Chang-shang,SUN Kai,MAZUMDER J .Preparation of a novel Ni/Co-based alloy gradient coating on surface of the crystallizer copper alloy by laser[J].Applied Surface Science,2011,258(4):1443-1450.,2011. |
| [9] | ZHOU Sheng-feng.A study of ceramic-metal composite coating prepared by laser-induction hybrid cladding technique[D].Wuhan:Huazhong University of Science and Technology,2008.,2008. |
| [10] | ZHOU Sheng-feng,HUANG Yong-jun,ZENG Xiao-yan,HU Qian-wu .Microstructure characteristics of Ni-based WC composite coatings by laser induction hybrid rapid cladding[J].Materials Science and Engineering A,2008,480:564-572.,2008. |
| [11] | 周圣丰,戴晓琴,郑海忠.激光熔覆与激光-感应复合熔覆WC-Ni60A涂层的结构与性能特征[J].机械工程学报,2012(07):113-118. |
| [12] | LU Yun,HE Yi-zhu .Liquid phase separation behaviors in Cu-Fe alloy coatings synthesized by laser cladding[J].Materials Science Form,2010,654 |
| [13] | CHEN Qing,JIN Zhang-peng .The Fe-Cu system:A thermodynamic evaluation[J].Metallurgical and Materials Transactions A,1995,26(2):417-426.,1995. |
| [14] | RATKE L,DIEFENBACH S .Liquid immiscible alloys[J].Materials Science and Engineering R,1995,15:263-347.,1995. |
| [15] | 冼爱平,张修睦,李忠玉,刘清泉,陈继志,李依依 .利用Marangoni对流制备均质偏晶合金[J].金属学报,1996,32(2):113-119.XIAN Ai-ping,ZHANG Xiu-mu,LI Zhong-yu,LIU Qing-quan,CHEN Ji-zhi,LI Yi-yi.Preparation of homogeneity immiscible alloy by Marangoni convection[J].Acta Metallurgica Sinica,1996,32(2):113-119.,1996. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%