用热氧化后真空扩散处理工艺在Ti-6Al-4V合金表面制备了与基体结合良好的硬化层,并在空气和真空条件下分别进行了摩擦磨损试验.结果表明,硬化层由表面氧化物薄层和氧扩散区组成.经790℃真空扩散后,表面氧化层中的部分TiO2发生了分解,在表面与基体之间沿层深方向产生了一定的硬度梯度.热氧化后进行真空扩散的工艺可有效地降低Ti-6Al-4V合金与GCr15钢在空气和真空中的干摩擦系数,提高Ti-6A1-4V合金在空气和真空中的磨损抗力.
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 |
| [2] | 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. |
| [3] | Dong H;Li X Y .Oxygen boost diffusion for the deep-case hardening of titanium alloys[J].Materials Science and Engineering,2000,A280:303. |
| [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(02):986. |
| [5] | 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. |
| [6] | Andrew Bloyce.Wear protection of titanium alloys, Surface Performance of Titanium[J].Minerals,Metals & Materials Society,1997 |
| [7] | Becker S;Rahmel A;Schorr M et al.Schtüze. Mechanism of isothermal oxidation of the intermetallic TiAl and of TiAl alloys[J].Oxidation,1992,38(01):425. |
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%