기계적 혼합에 의한 플라즈마 용사용 ZrO2-Y2O3 분말의 제조 및 특성

한진원; 곽찬원; 우기도; Jin-Won Han; Chan-Won Kwak; Kee-Do Woo

Korean Journal of Materials Research, Vol.24, No.7, 357-362, July, 2014

DOI10.3740/MRSK.2014.24.7.357 Export Citation

기계적 혼합에 의한 플라즈마 용사용 ZrO2-Y2O3 분말의 제조 및 특성

Fabrication and Characteristic of ZrO2-8%Y2O3 Powder for Plasma Spray Coating Manufactured by Mechanical Mixing Method

한진원, 곽찬원, 우기도^{1, †}

(주)세원하드페이싱
¹전북대학교 신소재공학부

Jin-Won Han, Chan-Won Kwak, and Kee-Do Woo^{1, †}

Seiwon Hardfacing Co. Ltd, Jeonbuk 531-330, Korea
¹Division of Advanced Materials Engineering, Chonbuk National University, Jeonbuk 561-756, Korea

E-mail:

Thermal barrier coatings(TBCs) are being applied in many industrial fields such as thermal power generation, aviation and seasonal fields. ZrO2-Y2O3(8 %) thermal spray coating powders are commercially used as thermal-barrier coating materials to protect against oxidation and corrosion of heat-resistant alloys at elevated temperatures. Currently, ZrO2-Y2O3(8 %) thermal-spray powder is made using the industrial co-precipitation process, which is very complex and requires a lot of time. In this study, orthorhombic ZrO2 and Y2O3 powders were fabricated by mechanical mixing, which is more economical than the co-precipitation process. A tetragonal, yttria-stabilized zirconia(YSZ) coating-layer was produced by plasma spraying, using orthorhombic ZrO2-Y2O3(8 %) powder. Our experimental results indicate that ZrO2-Y2O3(8%) mixed powder can be used economically in industry because it is no longer necessary to make this powder by liquid and gas-phase methods.

Keywords:mechanical mixing;plasma spray coating;SEM;thermal stability

[References]

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Wang Y, Tian W, Yang Y, Surf. Coat. Technol., 201, 7746 (2007)
Basak AK, Achanta S, Celis JP, Vardavoulias M, Matteazzi P, Surf. Coat. Technol., 202, 2368 (2008)
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[Referenced By]

[1] Wang Y, Jiang S, Wang M, Wear, 237, 176 (2000)

[2] Wang Y, Tian W, Yang Y, Surf. Coat. Technol., 201, 7746 (2007)

[3] Basak AK, Achanta S, Celis JP, Vardavoulias M, Matteazzi P, Surf. Coat. Technol., 202, 2368 (2008)

[4] Riman RE, Landham RR, Bowen HK, J. Am. Ceram. Soc., 72, 821 (1989)

[5] Sung HK, Won CW, Kim HS, J. Kor. Inst. Met. Mater., 30, 7 (1992)

[6] Jeon JH, Ring TA, J. Am. Ceram. Soc. Bull., 65, 1574 (1986)

[7] Jean JH, Ring TA, Colloids Surf., 29, 273 (1988)

[8] Kim BC, Kim SM, Lee JH, Kim JJ, J. Am. Ceram. Soc., 85, 2013 (2002)

[9] Y. M. Jung, Pottery of Korea (in Korean), Moonye Pulishing Co., Seoul, Korea (1991).