采用等离子原位冶金技术得到了复合碳化钨合金.通过扫描电镜、X射线衍射分析、硬度测试等手段对其微观组织、物相组成和结晶机理进行了研究.结果表明:复合碳化钨合金的组织比较均匀,硬质相主要为WC,W2C,Fe3 W3C和少量Cr7 C3,平均硬度HRA可达84.2,合金中的WC相显微硬度HV0.1可达2636.高温液相熔体中,WC的形核主要靠溶解扩散反应方式,生长方式为以(0001)面为基面,沿〈0001〉方向的层片状堆叠方式生长,最终成长为层片状三角棱柱空间结构,晶粒最大能长到70μm以上.
参考文献
| [1] | Tobar MJ;Alvarez C;Amado JM;Rodiguez G;Yanez A .Morphology and characterization of laser clad composite NiCrBSi-WC coatings on stainless steel[J].Surface & Coatings Technology,2006(22/23):6313-6317. |
| [2] | Shengfeng Zhou;Xiaoyan Zeng;Qianwu Hu;Yongjun Huang .Analysis Of Crack Behavior For Ni-based Wc Composite Coatings By Laser Cladding And Crack-free Realization[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2008(5P1):1646-1653. |
| [3] | J.M. Amado;M.J. Tobar;J.C. Alvarez;J. Lamas;A. Yanez .Laser Cladding Of Tungsten Carbides (spherotene~r) Hardfacing Alloys For The Mining And Mineral Industry[J].Applied Surface Science,2009(10):5553-5556. |
| [4] | Zhao MH;Liu AG;Guo MH;Liu DJ;Wang ZJ;Wang CB .WC reinforced surface metal matrix composite produced by plasma melt injection[J].Surface & Coatings Technology,2006(3/4):1655-1659. |
| [5] | M. ZHONG;W. LIU;Y. ZHANG .Formation of WC/Ni hard alloy coating by laser cladding of W/C/Ni pure element powder blend[J].International Journal of Refractory Metals & Hard Materials,2006(6):453-460. |
| [6] | X. Wu;G. Chen .Nonequilibrium microstructures and their evolution in a Fe-Cr-W-Ni-C laser clad coating[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1999(2):183-189. |
| [7] | 王淑峰,李惠琪,迟静,李敏.等离子原位冶金快速制备钨基硬质合金的研究[J].山东科技大学学报（自然科学版）,2010(01):85-89. |
| [8] | Wang, S.;Li, H.;Chen, X.;Chi, J.;Li, M.;Chai, L.;Xu, H. .Improving microstructure and wear resistance of plasma clad Fe-based alloy coating by a mechanical vibration technique during cladding[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2010(1):397-401. |
| [9] | 叶大伦;胡建华.实用无机物热力学数据手册[M].北京:冶金工业出版社,2002 |
| [10] | Christensen M;Wahnstrom G;Lay S;Allibert CH .Morphology of WC grains in WC-Co alloys: Theoretical determination of grain shape[J].Acta materialia,2007(5):1515-1521. |
| [11] | Yongqiang Yang;H. C. Man .Microstructure evolution of laser clad layers of W-C-Co alloy powders[J].Surface & Coatings Technology,2000(2/3):130-136. |
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%