采用双层辉光离子渗技术在Ti6Al4V合金表面进行多元合金化,形成均匀致密的Cr-Mo合金渗层.通过GDOES、XRD等手段标定表层成分和相结构,借助显微硬度计和球盘磨损仪测试合金渗层的性能.结果表明:合金渗层中合金化元素Cr与Mo呈梯度分布,主要由化合物Cr_(1.93)Ti_(1.07)、Cr_2Ti、Cr_2Ti_4O_(11)等相构成;改性的Ti6Al4V合金表面硬度有较大程度的提高,抗磨损性能明显改善.
Ti6Al4V alloy surface was multi-alloyed by a double-glow plasma technique, and the homogeneous and dense Cr-Mo modified layer was formed. The phase structure and composition of the modified layer was characterized by XRD and GDOES, and its properties were tested by microhardness meter and ball-plate wear instrument. The results show that the composition in the modified layer are Cr and a few Mo, and decrease gradually from the surface to the underlying substrate. The layer is composed of Cr_(1.93)Ti_(1.07), Cr_2Ti, Cr_2Ti_4O_(11) and a few FeCrMo phase. Surface hardness of the modified Ti6Al4V alloy is increased greatly, and the wear resistance is improved significantly.
参考文献
| [1] | Kaestner P.;He JW.;Rie KT.;Olfe J. .Improvement in the load-bearing capacity and adhesion of TiC coatings on TiAl6V4 by duplex treatment[J].Surface & Coatings Technology,2001(0):928-933. |
| [2] | Sui Him Mok;Guijun Bi;Janet Folkes et al.[J].Surface and Coatings Technology,2008,202(16):3933. |
| [3] | Zhang ZX;Dong H;Bell T .The load bearing capacity of hydrogen-free Cr-DLC coatings on deep-case oxygen hardened Ti6Al4V[J].Surface & Coatings Technology,2006(18/19):5237-5244. |
| [4] | Garbacz H;Wiecinski P;Ossowski M;Ortore MG;Wierzchon T;Kurzydlowski KJ .Surface engineering techniques used for improving the mechanical and tribological properties of the Ti6A14V alloy[J].Surface & Coatings Technology,2008(11):2453-2457. |
| [5] | Kermanpur A;Sepehri Amin H;Ziaei-Rad S et al.[J].Engineering Failure Analysis,2008,15(08):1052. |
| [6] | 徐重.等离子表面冶金技术的现状与发展[J].中国工程科学,2002(02):36-41. |
| [7] | Qin Lin;Qin Yanmei;Liu Xiaoping et al.[J].Materials Science Forum,2005,475-479:3947. |
| [8] | 秦林,唐宾,赵晋香,徐重.钛合金Ti6Al4V表面渗钼层的摩擦磨损性能[J].中国有色金属学报,2003(03):570-573. |
| [9] | 秦林,唐宾,刘道新,徐重.钛合金Ti6Al4V表面Mo-N改性层的摩擦性能研究[J].稀有金属材料与工程,2005(09):1465-1468. |
| [10] | Kaestner P.;Rie KT.;Olfe J. .Plasma-assisted boriding of pure titanium and TiAl6V4[J].Surface & Coatings Technology,2001(0):248-252. |
| [11] | Erdem Atar;Kayali E S;Huseyin Cimenoglu .[J].Surface and Coatings Technology,2008,202(07):4583. |
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