Hot-corrosion resistance and phase stability of Yb2O3-Gd2O3-Y2O3 costabilized zirconia-based thermal barrier coatings against Na2SO4 + V2O5 molten salts

被引：41

作者：

Song, Dowon ^{[1
]}

Song, Taeseup ^{[1
]}

Paik, Ungyu ^{[1
]}

Lyu, Guanlin ^{[2
]}

Kim, Junseong ^{[2
]}

Yang, SeungCheol ^{[2
]}

Jung, Yeon-Gil ^{[2
]}

机构：

[1] Hanyang Univ, Dept Energy Engn, Seoul 133791, South Korea

[2] Changwon Natl Univ, Sch Mat Sci & Engn, Chang Won 641773, Gyeongnam, South Korea

来源：

SURFACE & COATINGS TECHNOLOGY | 2020年 / 400卷

关键词：

Hot corrosion; Rare-earth element; Thermal barrier coatings (TBC); Reaction mechanism; MECHANICAL-PROPERTIES; STRONTIUM ZIRCONATE; DEGREES-C; CONDUCTIVITY; BEHAVIOR; ZRO2; YSZ; CERAMICS; MICROSTRUCTURE; DEGRADATION;

D O I：

10.1016/j.surfcoat.2020.126197

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The hot corrosion behavior of plasma-sprayed Yb2O3-Gd2O3-Y2O3 co-doped ZrO2 (YGYZ) coating against Na2SO4 + V2O5 molten salts was investigated and its detailed hot corrosion mechanism was suggested. The chemical reactivity order between the stabilizers was proposed based on the electronic structure and Lewis acid-base mechanism. After hot corrosion, the YGYZ coating exhibited the maintenance of tetragonality ratio and relatively lower extent of destabilization less than 40% of conventional yttria-stabilized ZrO2 coating. These great chemical and phase stabilities imply that YGYZ is promising candidate for high-temperature thermal barrier material.

引用

页数：7

共 58 条

[1]

Adachi G., 2006, Binary Rare Earth Oxides

[2] A comparative study on hot corrosion resistance of three types of thermal barrier coatings:: YSZ, YSZ + Al2O3 and YSZ/Al2O3 [J].

Afrasiabi, Abbas ;

Saremi, Mohsen ;

Kobayashi, Akira .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 478 (1-2) :264-269

[3] Evaluation of hot corrosion behavior of plasma sprayed ceria and yttria stabilized zirconia thermal barrier coatings in the presence of Na2SO4+V2O5 molten salt [J].

Ahmadi-Pidani, Raheleh ;

Shoja-Razavi, Reza ;

Mozafarinia, Reza ;

Jamali, Hossein .

CERAMICS INTERNATIONAL, 2012, 38 (08) :6613-6620

[4]

Azimi G, 2013, NAT MATER, V12, P315, DOI [10.1038/NMAT3545, 10.1038/nmat3545]

[5] Phase stability of ZrO2 9.5Y2O3 5.6Yb2O3 5.2Gd2O3 compound at 1100 °C and 1300 °C for advanced TBC applications [J].

Bahamirian, M. ;

Hadavi, S. M. M. ;

Farvizi, M. ;

Rahimipour, M. R. ;

Keyvani, A. .

CERAMICS INTERNATIONAL, 2019, 45 (06) :7344-7350

[6] Synthesis and Characterization of Yttria-Stabilized Zirconia Nanoparticles Doped with Ytterbium and Gadolinium: ZrO2 9.5Y2O3 5.6Yb2O3 5.2Gd2O3 [J].

Bahamirian, M. ;

Hadavi, S. M. M. ;

Rahimipour, M. R. ;

Farvizi, M. ;

Keyvani, A. .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2018, 49A (06) :2523-2532

[7] Evaluation of laser-glazed plasma-sprayed thermal barrier coatings under high temperature exposure to molten salts [J].

Batista, C. ;

Portinha, A. ;

Ribeiro, R. M. ;

Teixeira, V. ;

Oliveira, C. R. .

SURFACE & COATINGS TECHNOLOGY, 2006, 200 (24) :6783-6791

[8] The evolution of thermal barrier coatings - status and upcoming solutions for today's key issues [J].

Beele, W ;

Marijnissen, G ;

van Lieshout, A .

SURFACE & COATINGS TECHNOLOGY, 1999, 120 :61-67

[9]

Beshish G., 1993, Journal of Thermal Spray Technology, V2, P35

[10]

Bose S., 2017, High temperature coatings

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