在P20塑料模具钢表面制备了Ni/nano-SiO2复合镀层并利用CO2激光器进行强化处理.所采用的激光输出功率为2.0～3.1kW,扫描速度为0.8～2m/min.对纳米复合镀层、纳米复合镀激光强化层的显微组织结构进行分析,并测试了其硬度和耐磨性.结果表明:通过高能量密度的激光处理,强化层组织结构为多面体纳米SiO2颗粒,且消除了镀层原有缺陷(如间隙、微裂纹),强化层硬度、耐磨性在纳米复合镀层的基础上进一步提高.
参考文献
| [1] | 徐国财;张立德.纳米复合材料[M].北京:化学工业出版社,2002 |
| [2] | 徐滨士;朱绍华;刘世参.材料表面工程[M].哈尔滨:哈尔滨工业大学出版社,2005 |
| [3] | Rawers J C .Thermal stability of nanostructured metal alloys[J].Therm Techn,1998,7(03):427-428. |
| [4] | Zhang SH;Li MX;Cho TY;Yoon JH;Lee CG;He YZ .Laser clad Ni-base alloy added nano- and micron-size CeO2 composites[J].Optics & Laser Technology,2008(5):716-722. |
| [5] | Jiang X;Liu WJ;Dong SY;Xu BS .High temperature tribology behaviors of brush plated Ni-W-Co/SiC composite coating[J].Surface & Coatings Technology,2005(1):10-15. |
| [6] | 谭澄宇,梁英,夏长清,郑子樵.Ni/SiO2复合电镀层高温氧化性能的研究[J].表面技术,2000(06):16-19. |
| [7] | YANG Yuan-zheng;ZHU You-lan;LIU Zheng-yi .Laser remelting of plasma sprayed Al2O3 ceramic coating and subsequent wear resistance[J].Materials Science and Engineering,2000,291(l):168-172. |
| [8] | Kusinski J. .MICROSTRUCTURE, CHEMICAL COMPOSITION AND PROPERTIES OF THE SURFACE LAYER OF M2 STEEL AFTER LASER MELTING UNDER DIFFERENT CONDITIONS[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,1995(1/4):317-322. |
| [9] | Gongying Liang,T. T. Wong,Geng An,J. M. K. MacAlpine.Atmosphere corrosion behavior of plasma sprayed and laser remelted coatings on copper[J].中国光学快报（英文版）,2006(01):59-62. |
| [10] | XU Xiang-min;LI Bin-jie;LU Hui-min et al.The effect of the interface structure of different surface-modified nano-SiO2 on the mechanical properties of nylon 66 composites[J].Journal of Applied Polymer Science,2007,107(03):2007-2014. |
| [11] | Hao-Jie Song;Zhao-Zhu Zhang;Xue-Hu Men .The tribological behaviors of the polyurethane coating filled with nano-SiO_2 under different lubrication conditions[J].Composites, Part A. Applied science and manufacturing,2008(2):188-194. |
| [12] | 李雪松,WU Hua,杨友,JIANG Zhong-hao.MB8镁合金阴极电沉积Ni-SiC纳米复合镀层微观结构及性能[J].中国有色金属学报,2008(07):1261-1267. |
| [13] | 周月波,张海军.Ni-Al2O3纳米复合镀层的氧化性能研究[J].材料热处理学报,2008(02):154-157. |
| [14] | Shitang Zhang;Jiansong Zhou;Baogang Guo .Friction and wear behavior of laser cladding Ni/hBN self-lubricating composite coating[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(1/2):47-54. |
| [15] | 姚建华,叶良武,骆芳,张伟,孔凡志,董世运.纳米复合镀Al2O3层激光强化[J].中国激光,2007(07):998-1003. |
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