采用激光熔覆协同燃烧合成表面涂层技术在铁基材料表面原位生成复相陶瓷涂层.利用扫描电子显微镜(SEM)、能谱仪(EDS)、X射线衍射仪(XRD)等方法对涂层的物相组成、显微形貌、组织成分等进行了研究,结果表明涂层主要是由WC、Cr_3 C_2、σFeCr和Fe_2W所组成的复相体系.界面形貌特征表明涂层与基体之间为冶金结合.硬度及摩擦磨损试验表明,涂层的硬度及耐磨性能明显高于基体材料.热震实验结果显示涂层与基体具有良好的结合力.
A multiphase cermet coating on carbon steel was fabricated by laser cladding cooperated combustion synthesis.The microstrueture,phase composition,element distribution and microhardness have been analyzed by SEM, XRD,EDS and microhardness-tester,respectively.The results show that the coating was a multi-phase system which consisted of WC,Cr_3C_2,σFeCr and Fe_2W.The interface morphology showed that the coating and the substrate were metallurgically bonded.The hardness measurements and friction wear test show that the hardness and the wear resistance of the composite were superior to substrate.Besides,the thermal cycling test demonstrates that the coating was well bonded with the substrate.
参考文献
| [1] | 周笑薇,王小珍.激光熔覆技术在工业中的应用[J].中州大学学报,2005(04):110-111. |
| [2] | 黄瑞芬,罗建民,王春琴.激光熔覆技术的应用及其发展[J].兵器材料科学与工程,2005(04):57-59. |
| [3] | B.J. Kooi;Y.T. Pei;J.Th.M. De Hosson .The evolution of microstructure in a laser clad TiB-Ti composite coating[J].Acta materialia,2003(3):831-845. |
| [4] | L. Sexton;S. Lavin;G. Byrne .Laser cladding of aerospace materials[J].Journal of Materials Processing Technology,2002(1):63-68. |
| [5] | 高才,许斌.激光熔覆陶瓷增强金属基复合涂层技术的研究进展[J].表面技术,2008(04):63-66,75. |
| [6] | 王慧萍.关于激光熔覆层开裂问题的探讨[J].热处理,2008(06):24-27. |
| [7] | 吴新伟.镍基碳化钨金属陶瓷激光熔覆层开裂性的研究[J].中国激光,1997(06):570. |
| [8] | 王新林,石世宏,郑启光.激光熔覆层凝固特征与凝固组织控制研究[J].应用激光,2001(03):164-166. |
| [9] | 陈浩,刘传云,潘春旭,潘邻,陶锡麒,夏春怀.激光熔覆钴基合金的凝固组织特征及性能研究[J].金属热处理,2001(12):10-13. |
| [10] | 周伟,胡文彬,张荻.三维连续网络结构增强金属基复合材料及其制备[J].科学通报,1999(06):608-612. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%