Oxidation Resistant Ce-modified Silicide Coatings Prepared on Ti–6Al–4V Alloy by Pack Cementation Process

被引：0
|
作者：
Xuan Li
Jin Tian
Wei Tian
Xiulan Li
Wenling Xie
机构：
[1] Sichuan University of Science and Engineering,College of Mechanical Engineering
[2] Material Corrosion and Protection Key Laboratory of Sichuan Province,undefined
[3] China United Northwest Institute for Design and Research,undefined
来源：
Oxidation of Metals | 2018年 / 89卷
关键词：
Ti–6Al–4V alloy; Ce modification; Silicide coating; Activators; Oxidation resistance;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Cerium-modified silicide coatings were prepared on Ti–6Al–4V by pack cementation. The effects of different kinds of activators (NaCl, AlF3, AlCl3, and NH4Cl) and pack CeO2 concentrations (1, 3, and 5 wt%) on the coating structures were studied. The results show that the coatings were mainly composed of a TiSi2 outer layer, a TiSi middle layer, a Ti5Si4 inner layer and a 1–2 μm thick Ti5Si3 interdiffusion zone. NH4Cl was a more suitable activator for preparing the Ce-modified silicide coating on Ti–6Al–4V, based on the coating microstructure and growth rate. The coating thickness decreased with increasing CeO2 concentration in the pack. Oxidation tests at 800 °C in air showed that the Ce-modified silicide coating showed improved oxidation resistance compared to both the uncoated alloy and the pure silicide coating. A dense, but thick oxide scale formed that was composed of a TiO2 outer layer and a SiO2 inner layer.
引用
收藏
页码：471 / 482
页数：11
相关论文
共 50 条
  • [11] Strain behavior of the hydrogenated submicrocrystalline Ti–6Al–4V alloy
    E. N. Stepanova
    G. P. Grabovetskaya
    O. V. Zabudchenko
    I. P. Mishin
    Russian Physics Journal, 2011, 54 : 690 - 696
  • [12] Energetics of intergranular and interphase boundaries in Ti–6Al–4V alloy
    A. S. Gornakova
    S. I. Prokofjev
    Journal of Materials Science, 2020, 55 : 9225 - 9236
  • [13] Electrochemical Polishing of Additively Manufactured Ti–6Al–4V Alloy
    Yifei Zhang
    Jianzhong Li
    Shuanghang Che
    Yanwen Tian
    Metals and Materials International, 2020, 26 : 783 - 792
  • [14] Aluminide and silicide diffusion coatings by pack cementation for Nb-Ti-Al alloy
    Chaia, N.
    Cury, P. L.
    Rodrigues, G.
    Coelho, G. C.
    Nunes, C. A.
    SURFACE & COATINGS TECHNOLOGY, 2020, 389 (389):
  • [15] Enhanced adhesive performance of Ti–6Al–4V/PEEK interface by loading SPEEK on Ti–6Al–4V plates
    Pan, Lei
    Wang, Menglin
    Hu, Jingling
    Xue, Pengbo
    Guo, Huaxin
    Zhong, Lang
    Yuan, Xiaosa
    Shi, Hanqiao
    International Journal of Adhesion and Adhesives, 2022, 114
  • [16] Synthesis, corrosion and wear of anodic oxide coatings on Ti–6Al–4V
    R. Narayanan
    Partho Mukherjee
    S. K. Seshadri
    Journal of Materials Science: Materials in Medicine, 2007, 18 : 779 - 786
  • [17] Microstructure and high-temperature oxidation-resistant performance of several silicide coatings on Nb-Ti-Si based alloy prepared by pack cementation process
    Li, Jing
    Guo, Xi-Ping
    Key Engineering Materials, 2013, 533 : 145 - 165
  • [18] Joining of Ti3SiC2 with Ti–6Al–4V Alloy
    N. F. Gao
    Y. Miyamoto
    Journal of Materials Research, 2002, 17 : 52 - 59
  • [19] Potential dependent selective dissolution of Ti–6Al–4V and laser treated Ti–6Al–4V in acid/chloride media
    M.M. Khaled
    Journal of Applied Electrochemistry, 2003, 33 : 817 - 822
  • [20] Influence of the oxidation behavior of Ti–6Al–4V alloy in dry air on the oxide layer microstructure
    Lamiaa Z. Mohamed
    S. S. Abd Elmomen
    Shimaa El-Hadad
    Chemical Papers, 2022, 76 : 1627 - 1638
12345