Thermal, chemical, and mechanical properties of niobium phosphate glasses and glass-ceramics

被引：2

作者：

Silva, Roni Alisson ^{[1
,2
]}

Batista, Gislene ^{[1
]}

Cassani, Rodrigo ^{[1
]}

Teofilo, Ana Flavia ^{[1
]}

Martins, Gabriela Kobelnik ^{[2
]}

Cassar, Daniel Roberto ^{[3
]}

Serbena, Francisco Carlos ^{[2
]}

Cassanjes, Fabia ^{[1
]}

Poirier, Gael ^{[1
]}

机构：

[1] Univ Fed Alfenas, Mat Chem Grp, Campus Pocos de Caldas, Pocos De Caldas, MG, Brazil

[2] Univ Estadual Ponta Grossa, Dept Phys, Campus Uvaranas, BR- 84030900 Ponta Grossa, PR, Brazil

[3] Brazilian Ctr Res Energy & Mat CNPEM, Ilum Sch Sci, Campinas, SP, Brazil

来源：

CERAMICS INTERNATIONAL | 2024年 / 50卷 / 11期

关键词：

Glass; Glass-ceramic; Phosphate; Niobium; Elastic modulus; Hardness; NONLINEAR-OPTICAL PROPERTIES; DIELECTRIC-PROPERTIES; X-RAY; CRYSTALLIZATION; NIOBATE; DURABILITY; ABSORPTION; BEHAVIOR; HARDNESS; MODULUS;

D O I：

10.1016/j.ceramint.2024.02.350

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：

In this work, glass samples were obtained by melt-quenching in the binary system (100-x)KPO3-xNb2O5 with x = 20, 30, 40, and 50 mol%. Thermal properties investigated by DSC together with structural investigations by Raman spectroscopy allowed to understand the structural effect of Nb2O5 incorporation in the potassium phosphate glass network. A transparent glass-ceramic has also been produced by heat treatment of the 50KPO3-50Nb2O5 glass sample. Density, molar volume, atomic packing, and refractive index were determined and increased with Nb2O5 content. Chemical resistance in several corrosive aqueous solutions was found to increase with Nb2O5 content and crystallization. Vickers hardness as well as elastic modulus and hardness obtained from nanoindentation experiments also strongly increased with higher niobium contents, indicating that not only optical properties but also chemical and mechanical properties are improved with niobium incorporation in the phosphate glass network.

引用

页码：18618 / 18627

页数：10

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