Structural properties of melt versus sol-gel derived yttrium aluminosilicate systems

被引：6

作者：

Eniu, D. ^{[1
]}

Simon, S. ^{[2
,3
]}

机构：

[1] Iuliu Hatieganu Univ Med & Pharm, Fac Med, Dept Mol Sci, Cluj Napoca 400349, Romania

[2] Babes Bolyai Univ, Fac Phys, Cluj Napoca 400084, Romania

[3] Babes Bolyai Univ, Interdisciplinary Res Inst Bionanosci, Cluj Napoca 400084, Romania

来源：

CERAMICS INTERNATIONAL | 2018年 / 44卷 / 08期

关键词：

Calcination; X-ray methods; Spectroscopy; Glass ceramics; Y2O3; MOLECULAR-DYNAMICS SIMULATIONS; IN-SITU RADIOTHERAPY; INFRARED-SPECTROSCOPY; GLASS SYSTEM; MULLITE; SILICA; CRYSTALLIZATION; MICROSPHERES; DURABILITY; ASSIGNMENT;

D O I：

10.1016/j.ceramint.2018.02.181

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 present study reports results regarding the structure of yttrium aluminosilicate systems of similar composition obtained by melting and sol-gel methods. The samples were investigated both in non-crystalline state and partially crystallised by 1200 degrees C heat treatment. The differences already noticed in the local order of non-crystalline samples prepared by the two methods appear much more pronounced after partial crystallization as evidenced by X-ray diffraction and infrared spectroscopy analysis. The infrared absorption bands recorded in the low wavenumber range after heat treatment denote the yttrium involvement in crystalline phases. According to X-ray diffraction results, the embedding of yttrium in Y2Si2O7 crystalline phase is undeniably evidenced after 1200 degrees C treatment of melt derived sample while in the corresponding sol-gel derived sample yttrium embedding is presumed by partial replacement of aluminium atoms in Al6Si2O13 mullite phase.

引用

页码：9581 / 9584

页数：4

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