Transparent LiOH-doped magnesium aluminate spinel produced by spark plasma sintering: Effects of heating rate and dopant concentration

被引：3

作者：

Pouchly, Vaclav ^{[1
,2
]}

Talimian, Ali ^{[3
]}

Kastyl, Jaroslav ^{[4
]}

Chvila, Martin ^{[2
]}

Scasnovic, Erik ^{[1
,2
]}

Betlran, Ana M. ^{[5
]}

Lozano, Juan G. ^{[5
,6
]}

Galusek, Dusan ^{[3
,5
,7
,8
]}

机构：

[1] Brno Univ Technol, Cent European Inst Technol, Purkynova 123, Brno 61200, Czech Republic

[2] Brno Univ Technol, Fac Mech Engn, Tech 2, Brno 61200, Czech Republic

[3] Alexander Dubcek Univ Trencin, Ctr Funct & Surface Functionalised Glass, Studentska 2, Trencin 91150, Slovakia

[4] TESCAN Brno Sro, Libusina Trida 1, Brno 62300, Czech Republic

[5] Univ Seville, Escuela Politecn Super, Dept Ingn & Ciencia Mat & Transporte, Seville 41011, Spain

[6] Univ Seville, Escuela Tecn Super Ingn, Dept Ingn & Ciencia Mat & Transporte, Seville 41092, Spain

[7] IIC SAS, Joint Glass Ctr, TnUAD, Studentska 2, Trencin 91150, Slovakia

[8] FChPT STU, Studentska 2, Trencin 91150, Slovakia

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2023年 / 43卷 / 08期

关键词：

Spark plasma sintering; MgO spinel; Optical properties; MGAL2O4; SPINEL; CARBON CONTAMINATION; MECHANICAL-PROPERTIES; GRAIN-SIZE; SPS; CERAMICS; OXIDE; DENSIFICATION; TEMPERATURE; GROWTH;

D O I：

10.1016/j.jeurceramsoc.2023.01.059

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effects of LiOH doping of magnesium aluminate spinel powders and various Spark Plasma Sintering (SPS) schedules on densification behavior and final transparency of polycrystalline magnesium aluminate spinel were studied. Two commercial magnesium aluminate spinel powders, with different specific surface areas, were doped with up to 0.6 wt% of LiOH and consolidated using SPS with slow (2.75 degrees C/min) and fast (100 degrees C/min) heating rates. The slow heating rate was optimal for undoped magnesium aluminate spinel (LiOH-free) with the best real in-line transmittance (RIT) of 84.8% (measured at 633 nm on a disc 0.8 mm thick). For the magnesium aluminate spinel doped with 0.3 wt% of LiOH, the fast heating rate was beneficial, and an RIT of 76.5% was achieved. mu-Raman analysis confirmed that the addition of LiOH suppressed carbon contamination.

引用

页码：3544 / 3552

页数：9

共 35 条

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[23] Effects of Preheating of Powder Before Spark Plasma Sintering of Transparent MgAl2O4 Spinel
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[30] Comment: The Effect of Grain Size on the Mechanical and Optical Properties of Spark Plasma Sintering-Processed Magnesium Aluminate Spinel MgAl2O4 (Rothaman et al.)
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INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY, 2015, 12 : E174 - E175

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