Thermal Properties of Plasma-Sprayed (La0.4Sm0.5Yb0.1)2- Zr2O7 Coatings on NiCrCoAlY Bond Coats

Ling Liu*, Fuchi Wang, Zhuang Ma, Yingchao Sun

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

(La0.4Sm0.5Yb0.1)2Zr2O7 (LSYZO) coating was prepared by atmospheric plasma spray. Sm2Zr2O7 (SZO) coating was also prepared in the same conditions as a contrast. Microstructures and phases of LSYZO coatings were investigated by scanning electrical microscopy (SEM) and X-ray diffraction (XRD), respectively. The thermal conductivities of the two coatings were measured. The results show that the phase composition of LSYZO coating has no change after plasma spraying. The adhesion strength of LSYZO coating is 22 MPa, which is comparable with that of SZO coating. And LSYZO coating has lifetime of about 40 cycles. The thermal conductivity of LSYZO coating is lower than that of SZO coating, which mainly depends on the complex structure of LSYZO ceramic.

Original languageEnglish
Pages (from-to)2785-2789
Number of pages5
JournalXiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume46
Issue number10
Publication statusPublished - 1 Oct 2017

Keywords

  • Rare-earth zirconates
  • Thermal barrier coatings
  • Thermal properties

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Liu, L., Wang, F., Ma, Z., & Sun, Y. (2017). Thermal Properties of Plasma-Sprayed (La0.4Sm0.5Yb0.1)2- Zr2O7 Coatings on NiCrCoAlY Bond Coats. Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering, 46(10), 2785-2789.