Flash sintering with concurrent crystallization of Li1.5Al0.5Ge1.5(PO4)3 glass

被引：12
|
作者：
Campos, Joao, V [1 ,2 ,3 ]
Lavagnini, Isabela R. [4 ,5 ]
Zallocco, Vinicius M. [1 ,2 ,3 ]
Ferreira, Eduardo B. [3 ,6 ]
Pallone, Eliria M. J. A. [4 ,5 ]
Rodrigues, Ana C. M. [2 ,3 ]
机构：
[1] Univ Fed Sao Carlos, Mat Sci & Engn Grad Program, BR-13565905 Sao Carlos, SP, Brazil
[2] Univ Fed Sao Carlos, Dept Mat Engn, BR-13635905 Sao Carlos, SP, Brazil
[3] Univ Fed Sao Carlos, FAPESP, LaMaV, DEMa,Ctr Res Technol & Educ Vitreous Mat CeRTEV, BR-13565905 Sao Carlos, SP, Brazil
[4] Univ Sao Paulo, Dept Biosyst Engn, Ave Duque de Caxias Norte 225, BR-13635900 Pirassununga, SP, Brazil
[5] Univ Sao Paulo, Mat Sci & Engn Grad Program, FZEA, Ave Duque de Caxias Norte 225, BR-13635900 Pirassununga, Brazil
[6] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Mat Engn, BR-13566590 Sao Carlos, SP, Brazil
来源：
ACTA MATERIALIA | 2023年 / 244卷
基金：
巴西圣保罗研究基金会;
关键词：
LAGP; NaSICON; Solid-state electrolyte; Reactive flash sintering; Glass-ceramic; LIME SILICATE GLASS; TEMPERATURE DISTRIBUTION; IONIC-CONDUCTIVITY; ZNO CERAMICS; MICROSTRUCTURE; ZIRCONIA; DENSITY; FIELD;
D O I：
10.1016/j.actamat.2022.118593
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Single-phase Li1.5Al0.5Ge1.5(PO4)3 NaSICON (Na superionic conductor) glass-ceramic is obtained via a new route using flash-sinter crystallization. Green compacts of glass powder are sinter-crystallized in a few seconds. The results suggest that controlling the current increase during the flash event is needed to avoid overheating, which could cause the melting of the samples. A processing map for the flash sinter-crystallization of Li1.5Al0.5-Ge1.5(PO4)3 is developed and presented based on the current density and holding time at the steady state. The samples fabricated by flash sinter-crystallization are compared with those conventionally heated. Using this novel technique, single-phase glass-ceramics are obtained with total ionic conductivity at room temperature surpassing that of glass-ceramics prepared by conventional heating (2.26 10-4 S cm-1 and 1.36 10-4 S cm- 1, respectively).
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页数：10
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