IR-transparent MgO-Gd2O3 composite ceramics produced by self-propagating high-temperature synthesis and spark plasma sintering

被引：20

作者：

Permin, Dmitry A. ^{[1
,2
]}

Boldin, Maksim S. ^{[2
]}

Belyaev, Alexander V. ^{[1
]}

Balabanov, Stanislav S. ^{[1
]}

Koshkin, Vitaly A. ^{[1
,2
]}

Murashov, Atrem A. ^{[2
]}

Ladenkov, Igor V. ^{[3
]}

Lantsev, Evgeny A. ^{[2
]}

Smetanina, Ksenia E. ^{[2
]}

Khamaletdinova, Nadia M. ^{[4
]}

机构：

[1] RAS, GG Devyatykh Inst Chem High Pur Subst, Nizhnii Novgorod 603137, Russia

[2] Lobachevsky State Univ Nizhny Novgorod, Nizhnii Novgorod 603950, Russia

[3] Joint Stock Co Res & Prod Enterprise Salut, Nizhnii Novgorod 603950, Russia

[4] RAS, GA Razuvaev Inst Organometall Chem, Nizhnii Novgorod 603137, Russia

来源：

JOURNAL OF ADVANCED CERAMICS | 2021年 / 10卷 / 02期

基金：

俄罗斯科学基金会;

关键词：

MgO-Gd2O3; self-propagating high-temperature synthesis (SHS); spark plasma sintering (SPS); optical properties; infra-red (IR) ceramics;

D O I：

10.1007/s40145-020-0434-1

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：

A glycine-nitrate self-propagating high-temperature synthesis (SHS) was developed to produce composite MgO-Gd2O3 nanopowders. The X-ray powder diffraction (XRD) analysis confirmed the SHS-product consists of cubic MgO and Gd2O3 phases with nanometer crystallite size and retains this structure after annealing at temperatures up to 1200 degrees C. Near full dense high IR-transparent composite ceramics were fabricated by spark plasma sintering (SPS) at 1140 degrees C and 60 MPa. The in-line transmittance of 1 mm thick MgO-Gd2O3 ceramics exceeded 70% in the range of 4-5 mm and reached a maximum of 77% at a wavelength of 5.3 mm. The measured microhardness HV0.5 of the MgO-Gd2O3 ceramics is 9.5 +/- 0.4 GPa, while the fracture toughness (K-IC) amounted to 2.0 +/- 0.5 MPa center dot m(1/2). These characteristics demonstrate that obtained composite MgO-Gd2O3 ceramic is a promising material for protective infra-red (IR) windows.

引用

页码：237 / 246

页数：10

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[1] IR-transparent MgO-Gd2O3 composite ceramics produced by self-propagating high-temperature synthesis and spark plasma sintering
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Maksim S.BOLDIN
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Atrem A.MURASHOV
Igor V.LADENKOV
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