Thermal Expansion of Complex Oxides LaMgAl11O19, PrMgAl11O19, NdMgAl11O19, and SmMgAl11O19

IF 0.3 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Inorganic Materials: Applied Research Pub Date : 2025-08-02 DOI:10.1134/S2075113325701047

K. S. Gavrichev, V. N. Guskov, P. G. Gagarin, A. V. Guskov, M. A. Ryumin, Yu. F. Kargin

引用次数: 0

Abstract

Polycrystalline samples of rare earth hexaaluminates LaMgAl₁₁O₁₉, PrMgAl₁₁O₁₉, NdMgAl₁₁O₁₉, and SmMgAl₁₁O₁₉ were synthesized by the citrate sol-gel method with subsequent firing of xerogels in air. Thermal expansion of the compounds obtained was studied by the dilatometric method. Continuous shrinkage of samples was measured in the temperature range of 20–1600°C in air. In the temperature range of 20–1500°C, the linear thermal expansion coefficients of sintered ceramic samples of complex oxides LnMgAl₁₁O₁₉ (Ln = La, Pr, Nd, Sm) were determined, the values of which varied from 9.5 × 10^–6 to 12.9 × 10^–6°C^–1.

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复合氧化物LaMgAl11O19、PrMgAl11O19、NdMgAl11O19和SmMgAl11O19的热膨胀

采用柠檬酸溶胶-凝胶法制备了稀土六铝酸盐LaMgAl11O19、PrMgAl11O19、NdMgAl11O19和SmMgAl11O19多晶样品，并在空气中烧制干凝胶。用膨胀法研究了所得化合物的热膨胀。在20-1600℃的空气温度范围内测量了样品的连续收缩率。在20 ~ 1500℃的温度范围内，测定了复合氧化物LnMgAl11O19 （Ln = La, Pr, Nd, Sm）烧结陶瓷样品的线性热膨胀系数，其值在9.5 × 10-6 ~ 12.9 × 10-6℃- 1之间变化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Inorganic Materials: Applied Research Engineering-Engineering (all)

CiteScore

0.90

自引率

0.00%

发文量

199

期刊介绍： Inorganic Materials: Applied Research contains translations of research articles devoted to applied aspects of inorganic materials. Best articles are selected from four Russian periodicals: Materialovedenie, Perspektivnye Materialy, Fizika i Khimiya Obrabotki Materialov, and Voprosy Materialovedeniya and translated into English. The journal reports recent achievements in materials science: physical and chemical bases of materials science; effects of synergism in composite materials; computer simulations; creation of new materials (including carbon-based materials and ceramics, semiconductors, superconductors, composite materials, polymers, materials for nuclear engineering, materials for aircraft and space engineering, materials for quantum electronics, materials for electronics and optoelectronics, materials for nuclear and thermonuclear power engineering, radiation-hardened materials, materials for use in medicine, etc.); analytical techniques; structure–property relationships; nanostructures and nanotechnologies; advanced technologies; use of hydrogen in structural materials; and economic and environmental issues. The journal also considers engineering issues of materials processing with plasma, high-gradient crystallization, laser technology, and ultrasonic technology. Currently the journal does not accept direct submissions, but submissions to one of the source journals is possible.