희토류 산화물이 첨가된 YSZ 기반의 열차폐 코팅용 소재의 상 형성 및 기계적 특성
Formation of Phases and Mechanical Properties of YSZ-Based Thermal Barrier Coating Materials Doped with Rare Earth Oxides
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This study focused on improving the phase stability and mechanical properties of yttria-stabilized zirconia (YSZ), commonly utilized in gas turbine engine thermal barrier coatings, by incorporating Gd2O3, Er2O3, and TiO2. The addition of 3-valent rare earth elements to YSZ can reduce thermal conductivity and enhance phase stability while adding the 4-valent element TiO2 can improve phase stability and mechanical properties. Sintered specimens were prepared with hot-press equipment. Phase analysis was conducted with X-ray diffraction (XRD), and mechanical properties were assessed with Vickers hardness equipment. The research results revealed that, except for Z10YGE10T, most compositions predominantly exhibited the t-phase. Increasing the content of 3-valent rare earth oxides resulted in a decrease in the monoclinic phase and an increase in the tetragonal phase. In addition, the t(400) angle decreased while the t(004) angle increased. The addition of 10 mol% of 3-valent rare-earth oxides discarded the t-phase and led to the complete development of the c-phase. Adding 10 mol% TiO2 increased hardness than YSZ.
Abstract
This study focused on improving the phase stability and mechanical properties of yttria-stabilized zirconia (YSZ), commonly utilized in gas turbine engine thermal barrier coatings, by incorporating Gd2O3, Er2O3, and TiO2. The addition of 3-valent rare earth elements to YSZ can reduce thermal conductivity and enhance phase stability while adding the 4-valent element TiO2 can improve phase stability and mechanical properties. Sintered specimens were prepared with hot-press equipment. Phase analysis was conducted with X-ray diffraction (XRD), and mechanical properties were assessed with Vickers hardness equipment. The research results revealed that, except for Z10YGE10T, most compositions predominantly exhibited the t-phase. Increasing the content of 3-valent rare earth oxides resulted in a decrease in the monoclinic phase and an increase in the tetragonal phase. In addition, the t(400) angle decreased while the t(004) angle increased. The addition of 10 mol% of 3-valent rare-earth oxides discarded the t-phase and led to the complete development of the c-phase. Adding 10 mol% TiO2 increased hardness than YSZ.
참고문헌 (32)
- N. P. Padture, , Science, 296, pp.280~ (2002)
- X. Ren, , J. Alloys Compd, 750, pp.189~ (2018)
- R. A. Miller, , Surf. Coat. Technol, 30, pp.1~ (1987)
- X. Q. Cao, , J. Eur. Ceram. Soc, 24, pp.1~ (2004)
- S. Robert, , Mater. Sci. Eng. A, 245, pp.150~ (1998)
- F. Cernuschi, , J. Therm. Spray Technol, 8, pp.102~ (1999)
- E. V. Dudnik, , Powder Metall. Met. Ceram, 59, pp.179~ (2020)
- H. Miyazaki, , Int. J. Appl. Ceram. Technol, 5, pp.490~ (2008)
- Y. Wang, , Ceram. Int, 42, pp.13047~ (2016)
- H. Herman, , Mater. Sci. Eng. C, 88, pp.69~ (1987)
- G. Witz, , J. Am. Ceram. Soc, 90, pp.2935~ (2007)
- D. Zhu, , J. Therm. Spray Technol, 13, pp.84~ (2004)
- L. Jin, , IInt. J. Lightweight Mater. Manuf, 2, pp.261~ (2019)
- H. Tian, , Coatings, 13, pp.10~ (2023)
- J. Chevalier, , J. Am. Ceram. Soc, 92, pp.1901~ (2009)
- Y. S Choi, , J. Surf. Sci. Eng, 55, pp.368~ (2022)
- J. -F. Bisson, , J. Am. Ceram. Soc, 83, pp.1993~ (2000)
- D. R. Clarke, , Annu. Rev. Mater. Res, 33, pp.383~ (2003)
- H. Hayashi, , Solid State Ionics, 176, pp.613~ (2005)
- H. G. Scott, , J. Mater. Sci, 10, pp.1527~ (1975)
- Q. Wang, , Coatings, 8, pp.10~ (2018)
- M. N. Rahaman, , Acta Mater, 54, pp.1615~ (2006)
- K. A. Khor, , Mater. Lett, 31, pp.23~ (1997)
- C. Viazzi, , J. Alloys Compd, 452, pp.377~ (2008)
- Y. Sun, , Eng. Fract. Mech, 233, pp.107077~ (2020)
- J. A. Krogstad, "Phase Stability of Zirconia-Based Thermal Barrier Coatings", Ph. D., pp.2012
- M. Zhao, , Ceram. Int, 42, pp.501~ (2016)
- R. A. Miller, , Adv. Ceram, 3, pp.241~ (1981)
- E. H. Kisi, , Key Eng. Mater, 153-154, pp.1~ (1998)
- T. A. Schaedler, , J. Eur. Ceram. Soc, 28, pp.2509~ (2008)
- T. A. Schaedler, "Phase evolution in the yttrium oxide-titanium dioxide-zirconium oxide system and effects on ionic conductivity and toughness", Ph. D., pp.2006
- P. Luo, , Mater. Res. Express, 6, pp.15~ (2019)