Effects of Purity and Phase Content of Feedstock Powder on Thermal Durability of Zirconia-Based Thermal Barrier Coatings

被引：0
作者：
Kwang-Yong Park
Yeon-Gil Jung
In-Soo Kim
Byung-Il Yang
机构：
[1] Doosan Heavy Industries and Construction,School of Materials Science and Engineering
[2] Changwon National University,undefined
来源：
Journal of Thermal Spray Technology | 2017年 / 26卷
关键词：
feedstock; high purity; monoclinic phase; thermal barrier coating; thermal conductivity; thermal durability;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The thermal durability of thermal barrier coatings (TBCs) obtained using feedstock powders with different purity and phase content was investigated by cyclic thermal testing, including the effects on the sintering and phase transformation behaviors. Three kinds of 8 wt.% yttria-stabilized zirconia, namely regular purity (8YSZ), high purity (HP), and no monoclinic phase (nMP), were employed to prepare top coats by atmospheric plasma spraying on a NiCoCrAlY bond coat using a high-velocity oxy-fuel system. Use of 8YSZ, HP, and nMP for plasma spraying affected the microstructure and lifetime of the TBC in furnace cyclic testing (FCT) at 1100 °C and the sintering rate during annealing at 1400 °C for 50, 100, 200, and 400 h. In FCT, the TBC formed from nMP showed the longest durability, while that formed from HP showed lifetime performance similar to that obtained with regular-purity 8YSZ. The TBC obtained with nMP also exhibited the lowest monoclinic phase transition rate, followed by those obtained using HP and 8YSZ.
引用
收藏
页码：1161 / 1167
页数：6
相关论文
共 89 条
  • [1] Xie L(2007)Properties and Performance of High-Purity Thermal Barrier Coatings J. Therm. Spray Technol. 16 804-808
  • [2] Dorfman MR(2011)Enhanced Characteristics of HVOF-Sprayed MCrAlY Bond Coats for TBC Applications J. Therm. Spray Technol. 20 1209-1216
  • [3] Cipitria A(2010)Overview on Advanced Thermal Barrier Coatings Surf. Coat. Technol. 205 938-942
  • [4] Paul S(2009)Recent Developments in the Field of Thermal Barrier Coatings J. Therm. Spray Technol. 18 181-186
  • [5] Golosnoy IO(2009)Studies on the Properties of High-Velocity Oxy Fuel Thermal Spray Coatings for Higher Temperature Applications Mater. Sci. 41 805-823
  • [6] Clyne TW(2003)Behavior of Air Plasma Sprayed Thermal Barrier Coatings, Subject to Intense Thermal Cycling Surf. Coat. Technol. 166 37-43
  • [7] Rajasekaran B(2002)Thermal Barrier Coatings for Gas-Turbine Engine Applications Science 296 280-284
  • [8] Mauer G(2002)Mechanisms of Ceramic Coating Deposition in Solution-Precursor Plasma Spray J. Mater. Res. 17 2363-2372
  • [9] Vassen R(2003)Identification of Coating Deposition Mechanisms in the Solution-Precursor Plasma-Spray Process using Model Spray Experiments Mater. Sci. Eng. A 362 204-212
  • [10] Vaßen R(2003)Failure Modes in Plasma-Sprayed Thermal Barrier Coatings Mater. Sci. Eng. A 342 120-130
123456789