利用磁控反应溅射的方法在Ti3Al基合金表面制备了两种不同铝含量的Cr0.82Al0.18N与Cr0.53Al0.47N涂层,测试了这两种涂层在800℃(NR2SO4+25 mass%K2SO4)熔融盐膜百的热腐蚀动力学,并采用X射线衍射仪和带能谱的扫描电镜分析腐蚀产物相组成以及微观结构.结果表明,两种涂层均可降低Ti3Al基合金的热腐蚀速率;涂层热腐蚀产物主要为具有保护性的Cr2O3和θ-Al2O3混合氧化膜,θ-Al2O3的含量随着涂层中Al含量上升递增;和θAl2O3相比,Cr2O3在熔融硫酸盐中的稳定性更好,Cr0.82Al0.18N涂层抗热腐蚀性能优于Cr0.53Al0.47N涂层.
参考文献
| [1] | Xu X J;Xu L H;Xin J P et al.Pilot processing and microstructure control of high Nb containing ailoy[J].Intermetallics,2005,13:337-341. |
| [2] | Yoshihara M;Miura K .Effects of Nb addition on the oxidation behavior of Ti-Al[J].Intermetallics,1995,3:357-363. |
| [3] | Gauthier V;Dettenwanger F;Sehutze M et al.Oxidation resistant aiuminide coatings on γ-Ti-Al[J].Oxidation of Metals,2003,59:233-255. |
| [4] | Kuang S C .High temperature coating for titanium aiumindes using the pack-cementation technique[J].Oxidation of Metals,1990,34:217-228. |
| [5] | Nishimoto T;Izumi T;Hayashi S et al.Two-step Cr and Al diffusion coating on Ti-Al at high temperature[J].Intermetallics,2003,11:225-235. |
| [6] | Katsman A;Ginzburg A;Werber T et al.Nickel-aiuminide coating of Ti-Al by a two-stage process[J].Surface and Coatings Technology,2000,127:219-222. |
| [7] | Koo C H;Yu T H .Pack cementation coatings on Ti3AlNb alloys to modify the high temperature oxidation properties[J].Surface and Coatings Technology,2000,126:171-180. |
| [8] | Tang ZL.;Wu WT.;Wang FH. .Effect of MCrAlY overlay coatings on oxidation resistance of TiAl intermetallics[J].Surface & Coatings Technology,1998(3):248-252. |
| [9] | Li Z W;Gao W;Yoshihura M et al.Improving oxidation resistance of Ti3Al and Ti-Al intermetallic compounds with electro-spark deposited coatings[J].Materials Science and Engineering,2003,A347:243-252. |
| [10] | Wang F H;Guan C H;Tang Z L et al.Effect of sputtered Ti-AlCr coatings on oxidation and hot corrosion resistance of Ti-24Al-14Nb-3V[J].Journal of Materials Science and Technology,2001,17:501-506. |
| [11] | Xi Y J;Wang F H;He L L .Protective effect of the sputtered Ti-AlCrAg coating on the high temperature oxidation and hot resistance of Ti-Al-Nb alloy[J].Journal of Materials Science and Technology,2004,20:724-727. |
| [12] | Zhou C G;Yang Y;Gong S K et al.Effect of Ti-Al-Cr coatings on the high temperature oxidation behavior of Ti-Al based alloy[J].Materials Science and Engineering,2001,307:182-187. |
| [13] | Leyens C.;Peters M.;Hovsepian PE.;Lewis DB.;Luo Q.;Munz WD. .Novel coating systems produced by the combined cathodic arc/unbalanced magnetron sputtering for environmental protection of titanium alloys[J].Surface & Coatings Technology,2002(2/3):103-111. |
| [14] | Banakh O.;Schmid PE.;Sanjines R.;Levy E. .High-temperature oxidation resistance of Cr1-xAlxN thin films deposited by reactive magnetron sputtering[J].Surface & Coatings Technology,2003(0):57-61. |
| [15] | Zhu M';Li M S;Zhou Y C .Improvment on the oxidation resistance of a Ti3Al based alloy by Cr1-xAlxN (0≤x≤0.47) coatings[J].Journal of Materials Science and Technology,2007,23:373-378. |
| [16] | Zhu M;Li MS;Zhou YC .Oxidation resistance of Cr1-xAlxN (0.18 <= x <= 0.47) coatings on K38G superalloy at 1000-1100 degrees C in air[J].Surface & Coatings Technology,2006(6):2878-2886. |
| [17] | T. P. Li;X. H. Yin;M. S. Li .Oxidation Resistance of a Cr_(0.50)Al_(0.50)N Coating Prepared by Magnetron Sputtering on Alloy K38G[J].Oxidation of Metals,2007(3/4):193-210. |
| [18] | 钱余海 .几种合金高温腐蚀行为与稀土、外应力影响机制研究[D].中国科学院金属研究所,2002. |
| [19] | Eliaz N;Shernesh G;Latanision R M .Hot corrosion in gas turbine component[J].Eng Fall Anal,2002,9:31-43. |
| [20] | Rapp R A .Hot corrosion of materials:a fluxing mechanism[J].Corrosion Science,2002,44:209-221. |
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%