Combined Thermal Expansion and Hydrolytic Stability Study of Lanthanide Vanadates LnVO4 and CaLnZr(VO4)3 (Ln = La, Nd, Sm, Eu, Gd, Dy, Yb) with Zircon and Monazite Structures

arXiv - PHYS - Materials Science Pub Date : 2023-12-14 DOI:arxiv-2312.08738

A. K. KoryttsevaLobachevsky State University of Nizhny Novgorod, A. I. OrlovaLobachevsky State University of Nizhny Novgorod, N. S. LitonovaLobachevsky State University of Nizhny Novgorod, A. V. NokhrinLobachevsky State University of Nizhny Novgorod, M. S. BoldinLobachevsky State University of Nizhny Novgorod, A. A. MurashovLobachevsky State University of Nizhny Novgorod, D. G. FukinaLobachevsky State University of Nizhny Novgorod, A. A. AtopshevLobachevsky State University of Nizhny Novgorod, K. E. SmetaninaLobachevsky State University of Nizhny Novgorod, A. I. BeskrovnyiJoint Institute for Nuclear Research, V. A. TurchenkoJoint Institute for Nuclear Research, N. Y. TabachkovaJoint Institute for Nuclear Research

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Abstract

The paper presents the investigation of ordinary and ternary vanadates with zircon and monazite structures. Vanadates LnVO4 and CaLnZr(VO4)3 , where (Ln = La, Nd, Sm, Eu, Gd, Dy, Yb) and solid solution La0.3Nd0.5Sm0.1Eu0.1VO4, were prepared by precipitation reaction. Bulk ceramic samples were obtained from powders by Spark Plasma Sintering (SPS). The powders and ceramics were examined with several physicochemical methods. The coefficients of thermal expansion at 900{\deg}C were determined. The hydrolytic stability of ceramic materials was studied. The peculiarities of high-rate SPS of powders of ordinary and ternary vanadates were analyzed.

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具有锆石和独居石结构的镧系钒酸盐 LnVO4 和 CaLnZr(VO4)3（Ln = La、Nd、Sm、Eu、Gd、Dy、Yb）的热膨胀和水解稳定性综合研究

本文介绍了对具有锆石和独居石结构的普通和三元钒酸盐的研究。通过沉淀反应制备了钒酸盐 LnVO4 和 CaLnZr(VO4)3（其中 Ln =La、Nd、Sm、Eu、Gd、Dy、Yb）以及固溶体 La0.3Nd0.5Sm0.1Eu0.1VO4。通过火花等离子烧结法（SPS）从粉末中获得了块状陶瓷样品。采用多种物理化学方法对粉末和陶瓷进行了检测。测定了 900{\deg}C 时的热膨胀系数。研究了陶瓷材料的水解稳定性。分析了普通钒酸盐和三元钒酸盐粉末的高速 SPS 特性。

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arXiv - PHYS - Materials Science

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