Fabrication of Ceramic Composites by Microwave Sintering

IF 0.8 4区材料科学 Q4 MATERIALS SCIENCE, CERAMICS Glass Physics and Chemistry Pub Date : 2024-03-08 DOI:10.1134/S108765962360093X

L. P. Mezentseva, M. V. Keskinova, A. V. Osipov, M. M. Sychov

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Abstract

To prepare 0.5LaPO₄–0.5ZrO₂ and 0.5LaPO₄–0.5Y₂O₃ ceramic composites, a microwave assisted sol-gel procedure for the synthesis of nanosized 0.5LaPO₄·nH₂O–0.5ZrO(OH)₂ and 0.5LaPO₄· nH₂O–0.5Y(OH)₃ precursor powders was developed. Ceramic composites were prepared by microwave sintering of powders at 1100°C after preliminary heat treatment of precursor powders at 850°C, as well as by conventional stepwise sintering at 1000, 1100 and 1200°C for 24 h. The unit cell parameters of monoclinic LaPO₄ were calculated depending on sintering method and temperature. The values of specific surface area of the samples, Vickers microhardness, and thermal conductivity were determined; fracture surface of ceramic samples was studied. Such a complex study of 0.5LaPO₄–0.5ZrO₂ and 0.5LaPO₄–0.5Y₂O₃ composites is presented for the first time. The influence of sintering method, temperature and addition of zirconia and yttria to LaPO₄ on the resulting composite’s properties, phase composition and type of ceramic fracture surface is discussed.

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用微波烧结法制造陶瓷复合材料

摘要为了制备 0.5LaPO4-0.5ZrO2 和 0.5LaPO4-0.5Y2O3 陶瓷复合材料，开发了一种微波辅助溶胶-凝胶法合成纳米级 0.5LaPO4-nH2O-0.5ZrO(OH)2 和 0.5LaPO4- nH2O-0.5Y(OH)3 前驱体粉末。根据烧结方法和温度的不同，计算了单斜LaPO4的单胞参数。测定了样品的比表面积、维氏显微硬度和热导率，并对陶瓷样品的断裂面进行了研究。这是首次对 0.5LaPO4-0.5ZrO2 和 0.5LaPO4-0.5Y2O3 复合材料进行如此复杂的研究。研究讨论了烧结方法、温度以及在 LaPO4 中添加氧化锆和钇对所得复合材料的性能、相组成和陶瓷断裂面类型的影响。

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来源期刊

Glass Physics and Chemistry 工程技术-材料科学：硅酸盐

CiteScore

1.20

自引率

14.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Glass Physics and Chemistry presents results of research on the inorganic and physical chemistry of glass, ceramics, nanoparticles, nanocomposites, and high-temperature oxides and coatings. The journal welcomes manuscripts from all countries in the English or Russian language.