氧化铝-钇稳定氧化锆陶瓷在快速微波烧结过程中的强化致密化和相变

IF 5.8 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society Pub Date : 2024-10-21 DOI:10.1016/j.jeurceramsoc.2024.117006

S.V. Egorov , A.G. Eremeev , V.V. Kholoptsev , K.I. Rybakov , A.A. Sorokin , S.S. Balabanov , E.Ye. Rostokina

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引用次数: 0

摘要

氧化铝 - 7.5 wt% 钇稳定氧化锆（YSZ）陶瓷复合材料是在等温保持为零的情况下，用 24 GHz 微波加热以 10 - 200 °C/min 的速率烧结的。起始粉末是通过激光蒸发法制备的纳米η-Al2O3 和 YSZ。烧结样品的最终密度高达理论值的 97.5%。样品在转变为 α-Al2O3 相之前表现出快速致密化。随着微波电磁场强度的增加（通过使用不同的受体材料来改变），致密化率峰值（以及相变）的温度持续下降。微波和传统烧结实验的致密化峰值温度差超过了 200 °C。

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Enhanced densification and phase transformations during rapid microwave sintering of alumina – yttria-stabilized zirconia ceramics

Alumina – 7.5 wt% yttria-stabilized zirconia (YSZ) ceramic composites were sintered using 24 GHz microwave heating at rates of 10 – 200 °C/min with zero isothermal hold. The starting powders were nanophase η-Al₂O₃ and YSZ prepared by a laser evaporation method. The final densities of the sintered samples were up to 97.5 % of the theoretical value. The samples exhibited rapid densification until transformation to the α-Al₂O₃ phase. The temperature of the densification rate peak (and hence of the phase transformation) decreased consistently with increasing microwave electromagnetic field intensity (varied by using different susceptor materials). The densification peak temperature difference between microwave and conventional sintering experiments exceeded 200 °C.

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来源期刊

Journal of The European Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

10.70

自引率

12.30%

发文量

863

审稿时长

35 days

期刊介绍： The Journal of the European Ceramic Society publishes the results of original research and reviews relating to ceramic materials. Papers of either an experimental or theoretical character will be welcomed on a fully international basis. The emphasis is on novel generic science concerning the relationships between processing, microstructure and properties of polycrystalline ceramics consolidated at high temperature. Papers may relate to any of the conventional categories of ceramic: structural, functional, traditional or composite. The central objective is to sustain a high standard of research quality by means of appropriate reviewing procedures.