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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Effect of dwell time on cold sintering assisted sintering based highly transparent 0.9K(0.5)Na(0.5)NbO(3)-0.1LiBiO(3) ceramics
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Effect of dwell time on cold sintering assisted sintering based highly transparent 0.9K(0.5)Na(0.5)NbO(3)-0.1LiBiO(3) ceramics

机译：停留时间对冷烧结辅助烧结的高度透明0.9k（0.5）Na（0.5）NbO（3）-0.1Libio（3）陶瓷

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摘要

0.9K(0.5)Na(0.5)NbO(3)-0.1LiBiO(3) (KNN-0.1LB) transparent ceramics with high optical transmittance of 74% (at 900 nm) were successfully prepared by cold sintering assisted sintering (CSAS) method. The effects of CSAS process and dwell time on transmittance, phase structure, microstructure and electrical properties of the ceramics were investigated in detail. Comparing with conventional sintering (CS), the CSAS process can significantly increase the densities of KNN-0.1LB ceramics. The potassium-rich phase induced by "dissolution-precipitation" during CSAS process adheres to the grain boundaries and the grain surface, inhibiting the volatilization of potassium/sodium and grain growth. Under the condition of long dwell time, the potassium-rich phase and alkali metal elements introduced by the liquid medium of CSAS process can effectively compensate for the volatilization of A-site ions. Simultaneously, proper dwell time also helps to eliminate pores and promote densification. As a result, the properties of CSAS-based KNN-0.1LB ceramics have been evidently improved, which indicating the CSAS process can guide the design and fabrication of other transparent ceramics with excellent performance. (C) 2020 Elsevier B.V. All rights reserved.
机译：0.9k（0.5）Na（0.5）NBO（3）-0.1Libio（3）（KNN-0.1LB）具有高光学透射率为74％（900nm）的透明陶瓷通过冷烧结辅助烧结（CSAS）成功制备方法。研究了CSAS过程和停留时间对陶瓷的透射率，相结构，微观结构和电性能的影响。与常规烧结（CS）相比，CSAS方法可以显着增加KNN-0.1LB陶瓷的密度。 CSAS过程中“溶解 - 沉淀”诱导的富含钾的相粘附在晶界和晶粒表面上，抑制钾/钠和晶粒生长的挥发。在长停留时间的条件下，由CSAS工艺的液体介质引入的富钾的相和碱金属元素可有效地补偿A位离子的挥发。同时，适当的停留时间也有助于消除毛孔并促进致密化。结果，已经明显提高了基于CSA的KNN-0.1LB陶瓷的性质，这表明CSAS方法可以引导其他透明陶瓷的设计和制造具有优异的性能。 （c）2020 Elsevier B.v.保留所有权利。

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