Ti6aL4V合金经800℃、1h和900℃、15 min热氧化后,分别进行850℃、20 h真空扩散,并将900℃、15 min热氧化+ 850℃、20 h真空扩散后的试样在25℃和400℃下进行磨损试验,比较真空扩散后的显微硬度分布及处理前后的磨损量,通过XRD、SEM、EDS等分析手段对氧化、氧化/扩散及磨损后的结构和形貌进行测试分析.结果表明:Ti6Al4V合金经热氧化后,表面形成钛氧化物,再经真空扩散后,TiO2发生了分解,在表层和基体间形成了氧扩散层,增加了两者间的结合力,产生了硬化效应,同时形成一定数量的Al3Ti,在不同温度和载荷下,磨损量均比未处理试样的小;经900℃、15 min热氧化+850℃、20 h真空扩散后的Ti6Al4V合金,耐磨性可得以显著提高.
参考文献
| [1] | 王金友;葛志明;周彦邦.航空用钛合金[M].上海:上海科学技术出版社,1987:110. |
| [2] | Budinski K G .Tribological properties of titanium alloys[J].WEAR,1991,151:203-217. |
| [3] | Buckley D H;Miyoshi K .Friction and wear of ceramics[J].WEAR,1984,100(1-3):333-335. |
| [4] | Alonso F;Arizaga A;Quainton S et al.Mechanical properties and structure of Ti-6Al-4V alloy implanted with different light ions[J].Surface and Coatings Technology,1995,74-75:986-992. |
| [5] | Giardini-Guidoni A.;Teghil R.;Di Palma TM.;Beccaria AM. Chiaruttini L.;Marotta V. .Anticorrosion titanium oxide coatings deposited by pulsed laser ablation[J].Surface & Coatings Technology,1998(1/3):437-439. |
| [6] | Zhang F.;Mao YJ.;Huang N.;Chen Y.;Zheng ZH.;Zhou ZY.;Chen AQ.;Jiang ZB.;Liu XH. .Artificial heart valves: improved hemocompatibility by titanium oxide coatings prepared by ion beam assisted deposition[J].Surface & Coatings Technology,1998(0):146-150. |
| [7] | Martin N.;Rousselot C.;Rauch JY.;Baretti D. .The effect of bias power on some properties of titanium and titanium oxide films prepared by rf magnetron sputtering[J].Surface & Coatings Technology,1998(2/3):172-182. |
| [8] | Loinaz A.;Alonso F.;Onate JI.;Ensinger W.;Rinner M. .Effects of plasma immersion ion implantation of oxygen on mechanical properties and microstructure of Ti6Al4V[J].Surface & Coatings Technology,1998(0):262-267. |
| [9] | Bloyce A.Wear protection of titanium alloy[A].Cincinnati:The Minerals,Metals & Materials Society,1996:155-169. |
| [10] | Schutz R W.Surface treatments for expanding titanium alloyapplicationlimits:an review[A].Cincinnati:The Minerals,Metals & Materials Society,1996:1-22. |
| [11] | Bloyce A.;Dong H.;Bell T.;Qi PY. .Surface modification of titanium alloys for combined improvements in corrosion and wear resistance[J].Surface & Coatings Technology,1998(2/3):125-132. |
| [12] | Dong H;Li X Y .Oxygen boost diffusion for the deepcase hardening of titanium alloys[J].Material Science and Engineering,2000,A 280:303-310. |
| [13] | Becker S;Rahmel A;Schorr M et al.Mechanism of isothermal oxidation of the intermetallie TiAl and of TiAl alloys[J].Oxidation of Metals,1992,38:425-464. |
| [14] | 刘勇,杨德庄,何世禹,武万良.Ti-6Al-4V合金表面的热氧化/真空扩散处理[J].中国有色金属学报,2003(01):177-180. |
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%