采用机械合金化技术制备球磨TiB2-50Ni金属陶瓷复合粉末，通过超音速火焰喷涂技术制备TiB2-50Ni涂层，研究不同球磨时间得到TiB2-50Ni粉末的显微组织和物相，研究TiB2-50Ni涂层的显微组织、物相结构、孔隙率和硬度。结果表明，随着球磨时间的延长，陶瓷相TiB2逐渐破碎，黏结相Ni变形严重，且TiB2包覆在Ni表面的含量增加；粉末与涂层的主要物相为TiB2和Ni相，涂层组织致密，孔隙率低，平均硬度值为（597.9±36.1）HV0.3。
TiB2?50Ni cermet composite powders were fabricated by mechanical alloying,and TiB2?50Ni coating was prepared by high velocity oxygen fuel method. The microstructure of TiB2 ? 50Ni powders and coating was examined by scanning electron microscopy,and phase composition was investigated by means of X?ray diffraction,the porosity and microhardness of coating were also investigated. The results show that with the milling time prolonging,size of TiB2 gradually decreases,binder phase Ni deforms seriously,and the content of TiB2 coated on binder phase Ni surface increases. The main phase components of TiB2?50Ni powder and coating are TiB2 and Ni,and coating has dense microstructure and low porosity,the average hardness of TiB2?50Ni coating is(597.9±36.1)HV0.3.
参考文献
| [1] | 章新桥;王声瑞;毛天尔.机械合金化制备金属难熔化合物[J].稀有金属与硬质合金,1995(03):26-28. |
| [2] | 杨福宝 .NiAl合金及其复合材料的机械合金化研究[D].大连理工大学,2001. |
| [3] | 朱心昆 .机械合金化的研究及进展[J].粉末冶金技术,1999,17(04):291-296. |
| [4] | Itoh H;Naka S;Matsudaira T et al.Preparation of TiB2 sin-tered compacts by hot pressing[J].Journal Material Science,1990,25:533-536. |
| [5] | Hoke DA.;Meyers MA. .CONSOLIDATION OF COMBUSTION-SYNTHESIZED TITANIUM DIBORIDE-BASED MATERIALS[J].Journal of the American Ceramic Society,1995(2):275-284. |
| [6] | Berger M .Thick physical vapor deposited TiB2 coatings[J].SURFACE ENGINEERING,2002,18(03):219-223. |
| [7] | 贾宝平 .Ti基TiB<,2>渗层材料在铝电解惰性阴极方面的应用研究[D].中南大学,2004. |
| [8] | 王宝龙,赵俊国,王文武.TiB2材料的特性及其在铝工业中的应用[J].轻金属,2004(05):23-26. |
| [9] | 刘开琪;徐强;张会军.金属陶瓷的制备与应用[M].北京:冶金工业出版社,2008:35. |
| [10] | 李方坡,王引真,孙永兴,潘蛟亮,高海军.反应超音速火焰喷涂TiC-TiB2-Ni涂层的组织性能[J].中国石油大学学报（自然科学版）,2009(01):99-102,108. |
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