CMAS corrosion resistance of scandia, ceria, yttria-stabilized zirconia ceramic

IF 1.8 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

International Journal of Applied Ceramic Technology Pub Date : 2024-05-24 DOI:10.1111/ijac.14808

Mina Aflaki, Fatemeh Davar

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引用次数: 0

Abstract

Sc₂O₃–CeO₂–Y₂O₃– stabilized zirconia (ScCeYSZ) nanoparticles with different percentages of stabilizer agents [sample1: 1.8 wt.% (Sc₂O₃) 8.3 wt.% (CeO₂) 1.9 wt.% (Y₂O₃), sample 2: 1.1 wt.% (Sc₂O₃) 9.0 wt.% (CeO₂) 1.9 wt.% (Y₂O₃), sample 3: .5 wt.% (Sc₂O₃) 9.6 wt.% (CeO₂) 1.9 wt.% (Y₂O₃) stabilized zirconia] were synthesized with Pechini method and consolidated by spark plasma sintered method. The results showed that despite the [(sample)₁: 1.8 wt.% (Sc₂O₃) 8.3 wt.% (CeO₂) 1.9 wt.% (Y₂O₃)] had lower density and higher porosity percentage compared to other samples, it had better calcium–magnesium–alumina–silicate (CMAS) corrosion resistance compared to other samples and the yttria-stabilized zirconia nanopowders (nano-YSZ) sample. It was due to the higher acidic nature and tetragonality of the (sample)₁ sintered body compared to other samples and YSZ ceramic in the CMAS corrosive medium. Moreover, the results of phase and microstructural analysis following CMAS corrosion revealed the formation of the monoclinic phase and rod-shaped CaAl₂Si₂O₈ particles on the surface of the sampled sintered sample. However, the nano-YSZ sample corroded homogenously and delamination occurred after the CMAS corrosion test.

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钪、铈、钇稳定氧化锆陶瓷的 CMAS 抗腐蚀性能

含有不同比例稳定剂的 Sc2O3-CeO2-Y2O3- 稳定氧化锆 (ScCeYSZ) 纳米颗粒 [样品 1: 1.8 wt.% (Sc2O3) 8.3 wt.% (CeO2) 1.9 wt.% (Y2O3)，样品 2: 1.1 wt.% (Sc2O3) 9.0 wt.% (CeO2) 1.9 wt.% (Y2O3)，样品 3：.5 wt.% (Sc2O3) 9.6 wt.% (CeO2) 1.9 wt.% (Y2O3)稳定氧化锆]用 Pechini 法合成，并用火花等离子烧结法固结。结果表明，尽管[（样品）1：1.8 wt.%（Sc2O3）8.3 wt.%（CeO2）1.9 wt.%（Y2O3）]与其他样品相比密度较低，孔隙率较高，但与其他样品和纳米钇稳定氧化锆粉（纳米 YSZ）样品相比，它具有更好的钙镁铝硅酸盐（CMAS）耐腐蚀性。这是因为与其他样品和 YSZ 陶瓷相比，（样品）1 烧结体在 CMAS 腐蚀介质中具有更高的酸性和四方性。此外，CMAS 腐蚀后的相和微观结构分析结果表明，取样烧结样品表面形成了单斜相和棒状 CaAl2Si2O8 颗粒。然而，纳米 YSZ 样品在 CMAS 腐蚀试验后出现了均匀腐蚀和分层现象。

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来源期刊

International Journal of Applied Ceramic Technology 工程技术-材料科学：硅酸盐

CiteScore

3.90

自引率

9.50%

发文量

280

审稿时长

4.5 months

期刊介绍： The International Journal of Applied Ceramic Technology publishes cutting edge applied research and development work focused on commercialization of engineered ceramics, products and processes. The publication also explores the barriers to commercialization, design and testing, environmental health issues, international standardization activities, databases, and cost models. Designed to get high quality information to end-users quickly, the peer process is led by an editorial board of experts from industry, government, and universities. Each issue focuses on a high-interest, high-impact topic plus includes a range of papers detailing applications of ceramics. Papers on all aspects of applied ceramics are welcome including those in the following areas: Nanotechnology applications; Ceramic Armor; Ceramic and Technology for Energy Applications (e.g., Fuel Cells, Batteries, Solar, Thermoelectric, and HT Superconductors); Ceramic Matrix Composites; Functional Materials; Thermal and Environmental Barrier Coatings; Bioceramic Applications; Green Manufacturing; Ceramic Processing; Glass Technology; Fiber optics; Ceramics in Environmental Applications; Ceramics in Electronic, Photonic and Magnetic Applications;