真空渗氮可较好地改善材料表面性能,但目前对其在钛合金中的应用研究较少.采用真空渗氮的方法对TC4钛合金作表面改性,通过X射线衍射仪(XRD)、失重法、电化学测试及扫描电镜(SEM)分析了改性层的形貌、相组成及腐蚀性能.结果表明:经真空渗氮处理的TC4合金在50 mL/L HF +200 mL/L HNO3混合体系中加速腐蚀10 min后,渗层表面基本保持完好,腐蚀速率只有基体的1/145,自腐蚀电位由基体的-0.762 5 V提高到0.511 9 V,腐蚀电流降低2个数量级,真空渗氮极大地改善了钛合金的耐腐蚀性.
参考文献
| [1] | 林翠,刘枫,赵晴,杜楠,郑林斌.氢氟酸-硝酸体系中TC4钛合金的腐蚀行为[J].失效分析与预防,2008(02):11-15. |
| [2] | 赵晴,朱文辉,王帅星,宁铮.微弧氧化TC4钛合金与金属电偶的腐蚀行为[J].材料保护,2011(04):7-10. |
| [3] | 蔡健平,刘明辉,张晓云.钛合金脉冲阳极氧化膜抗电偶腐蚀性能及机理[J].材料保护,2009(03):15-17. |
| [4] | Bhaduri, D.;Chattopadhyay, A.K. .Study on the role of PVD TiN coating in improving the performance of electroplated monolayer superabrasive wheel[J].Surface & Coatings Technology,2010(2):658-667. |
| [5] | 于翔,王成彪,刘阳,于德洋.中频对靶磁控溅射合成TiN/Ti多层膜[J].金属学报,2006(06):662-666. |
| [6] | Masashi Yoshida;Ryuta Ichiki;Noah Utsumi .Surface Hardening of Titanium Using Gas Nitriding[J].International Journal of Precision Engineering and Manufacturing,2013(6):971-976. |
| [7] | Gloria P. Rodriguez;Gemma Herranz;Ana Romero .Solar gas nitriding of Ti6Al4V alloy[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2013(Oct.15):445-452. |
| [8] | Sujeong Lee;Wonbaek Kim;Chang-yul Suh .Preparation of Titanium- Chromium Nitride by Gas Nitriding of the Explosion Products of Cr-Coated Ti Wire[J].Materials transactions,2011(2):261-264. |
| [9] | 赵斌,吴建生,孙坚,王飞.TiAl基合金高温气体渗氮[J].金属学报,2001(08):837-840. |
| [10] | Thongtem S.;McNallan M.;Thongtem T. .High-temperature nitridation and oxidation of Ti-based alloys[J].Surface and Interface Analysis: SIA: An International Journal Devoted to the Development and Application of Techniques for the Analysis of Surfaces, Interfaces and Thin Films,2001(1):306-309. |
| [11] | 吴光英.真空和增压脉冲化学热处理炉及其应用[J].国外金属热处理,2003(02):28-31,33. |
| [12] | 吴光英.脉冲真空化学热处理炉[J].热处理,2001(04):29-32. |
| [13] | 张晓伟,刘洪喜,蒋业华,王传琦.激光原位合成TiN/Ti3Al基复合涂层[J].金属学报,2011(08):1086-1093. |
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%