High-temperature oxidation resistance of sol-gel-derived ZrO2/(Al2O3-Y2O3) coating on titanium alloy

被引：10
作者：
Yao, Y. B. [1 ]
Yao, Z. J. [1 ]
Zhou, Y. J. [1 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Sch Mat Sci & Technol, Nanjing, Jiangsu, Peoples R China
来源：
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2016年 / 80卷 / 03期
关键词：
Sol-gel process; Spin-coating; Oxidation resistance; Titanium alloy; Composite coating; TIAL-BASED ALLOY; PROTECTION; BEHAVIOR; IMPROVEMENT; AL2O3; FILM;
D O I：
10.1007/s10971-016-4172-3
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
ZrO2/(Al2O3-Y2O3) composite coating was deposited on Ti-6.5Al-3.5Mo-15Zr-0.3Si (at.%) alloy via sol-gel spin coating with the hope to improve its high-temperature oxidation resistance. The as-prepared coating was dense, uniform and crack-free. Isothermal and cyclic oxidation tests of coated and uncoated specimens at 700 A degrees C for 100 h were performed to evaluate its effect on oxidation behavior of the alloy. The results indicated that oxidation resistance and spallation resistance for coated specimen have been remarkably improved, thickness of oxide scale of coated specimen was thinner than that of uncoated one and the scale was composed of deposited Al2O3 outermost layer, a thin TiO2 middle layer and a mixture of Al2O3 and ZrO2 thick innermost layer. The mechanism of the coating having beneficial effects could be attributed to the inhibition of the inward diffusion of O and outward diffusion of Ti and Al, lower thermal stress and good adhesion between the coating and substrate. [GRAPHICS] .
引用
收藏
页码：612 / 618
页数：7
相关论文
共 27 条
  • [1] MECHANISM OF ISOTHERMAL OXIDATION OF THE INTERMETALLIC TIAL AND OF TIAL ALLOYS
    BECKER, S
    RAHMEL, A
    SCHORR, M
    SCHUTZE, M
    [J]. OXIDATION OF METALS, 1992, 38 (5-6): : 425 - 464
  • [2] Effects of microcrack-damage on fracture behavior of TiAl alloy. Part II: load-controlled tensile test
    Cao, Rui
    Zhu, Hao
    Chen, Jian Hong
    Zhang, Ji
    [J]. JOURNAL OF MATERIALS SCIENCE, 2008, 43 (01) : 299 - 311
  • [3] Thermal stability and oxidation resistance of Ti-Al-N coatings
    Chen, Li
    Paulitsch, Joerg
    Du, Yong
    Mayrhofer, Paul H.
    [J]. SURFACE & COATINGS TECHNOLOGY, 2012, 206 (11-12) : 2954 - 2960
  • [4] Improvement in the oxidation resistance of α2-Ti3Al by sputtering Al film and subsequent interdiffusion treatment
    Chu, MS
    Wu, SK
    [J]. SURFACE & COATINGS TECHNOLOGY, 2004, 179 (2-3) : 257 - 264
  • [5] Clemens H, 2000, ADV ENG MATER, V2, P551, DOI 10.1002/1527-2648(200009)2:9<551::AID-ADEM551>3.0.CO
  • [6] 2-U
  • [7] CRACKING AND SPALLING OF PROTECTIVE OXIDE LAYERS
    EVANS, HE
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1989, 120 : 139 - 146
  • [8] Novel CrAlYN/CrN nanoscale multilayer PVD coatings produced by the combined High Power Impulse Magnetron Sputtering/Unbalanced Magnetron Sputtering technique for environmental protection of γ-TiAl alloys
    Hovsepian, P. Eh.
    Ehiasarian, A. P.
    Braun, R.
    Walker, J.
    Du, H.
    [J]. SURFACE & COATINGS TECHNOLOGY, 2010, 204 (16-17) : 2702 - 2708
  • [9] ZrO2-SiO2 gradient multilayer oxidation protective coating for SiC coated carbon/carbon composites
    Huang, HF
    Zeng, XR
    Li, HJ
    Xiong, XB
    Sun, GL
    [J]. SURFACE & COATINGS TECHNOLOGY, 2005, 190 (2-3) : 255 - 259
  • [10] Jung HG, 2002, SURF COAT TECH, V154, P75, DOI 10.1016/S0257-8972(01)01716-9
123