EFFECT OF PEPTIZATION ON DENSIFICATION AND PHASE-TRANSFORMATION BEHAVIOR OF SOL GEL-DERIVED NANOSTRUCTURED TITANIA

被引：145

作者：

KUMAR, KNP

KUMAR, J

KEIZER, K

机构：

[1] Faculty of Chemical Technology, University of Twente, Enschd

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1994年 / 77卷 / 05期

关键词：

Calorimetry - Densification - Differential thermal analysis - Gels - Gravimetric analysis - Phase transitions - Porosity - Sintering - Size determination - Sol-gels - Titanium dioxide;

D O I：

10.1111/j.1151-2916.1994.tb05426.x

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：

Porosity reduction, packing, pore-size distribution, and anatase to rutile phase transformation behavior of nanostructured titania ceramics prepared from both peptized and unpeptized sols were studied and compared using XRD, DSC, and nitrogen-gas physisorption techniques. Precursor gels prepared from the peptized sol had a green density of about 70% after drying at 40-degrees-C, whereas the samples prepared from the unpeptized sol had a green density of only 50%. Samples prepared from the peptized sol showed higher sintering and phase transformation rates compared to the unpeptized sols.

引用

页码：1396 / 1400

页数：5

共 23 条

[1]

AKSAY IA, 1984, ULTRASTRUCTURE PROCE, P439

[2]

[Anonymous], ADSORPTION SURFACE A

[3]

BANSAL NP, 1983, J AM CERAM SOC, V66, pC218, DOI 10.1111/j.1151-2916.1983.tb10583.x

[4]

Barringer E.A., 1984, ULTRASTRUCTURE PROCE, P315

[5]

BARRINGER EA, 1982, J AM CERAM SOC, V65, pC199, DOI 10.1111/j.1151-2916.1982.tb09948.x

[6]

Bore J.H. de, 1958, STRUCTURE PROPERTIES, P68

[7]

BOUTZ MMR, 1993, THESIS U TWENTE ENSC

[8]

BRINKER CJ, 1990, SOL GEL SCI, P46

[9] CERAMIC NANOSTRUCTURE MATERIALS, MEMBRANES AND COMPOSITE LAYERS [J].

BURGGRAAF, AJ ;

KEIZER, K ;

VANHASSEL, BA .

SOLID STATE IONICS, 1989, 32-3 :771-782

[10]

GLIETER H, 1992, ADV MATER, V4, P474

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