Synthesis of nano-crystalline multifibrous zirconia needle

被引：1

作者：

Biswas, Mridula ^{[1
]}

Bandyopadhyay, Siddhartha ^{[1
]}

机构：

[1] CSIR Cent Glass & Ceram Res Inst, Kolkata 700032, India

来源：

MATERIALS RESEARCH BULLETIN | 2013年 / 48卷 / 06期

关键词：

Ceramics; Sol-gel chemistry; OXYCHLORIDE; FIBERS; ACID;

D O I：

10.1016/j.materresbull.2013.02.073

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Zirconia needles have been successfully synthesized using a simple inorganic sol-gel process without using any template. The method employs mixture of zirconium oxychloride octahydrate and sulphuric acid in aqueous medium. This process requires heat treatment at 40 degrees C for 2 h in an oven for nucleus formation. Complete formation of needle occurs after 17 days. The green needle retained its original shape after calcination at 1200 degrees C. Fired needles were of 1-2 cm in length and 5-50 mu m in diameter and possess monoclinic phase. Needles are composed of multiple fibres. Depending on the heat treatment temperature, crystallite size varies in the range of 8 to around 300 nm. (C) 2013 Published by Elsevier Ltd.

引用

页码：2409 / 2413

页数：5

共 12 条

[1] Yttria-stabilized zirconia thermal barrier coatings - A review [J].

Chen, L. B. .

SURFACE REVIEW AND LETTERS, 2006, 13 (05) :535-544

[2] Structural and phenomenological characterization of the thermoreversible sol-gel transition of a zirconyl aqueous precursor modified by sulfuric acid [J].

Chiavacci, LA ;

Pulcinelli, SH ;

Santilli, CV ;

Briois, V .

CHEMISTRY OF MATERIALS, 1998, 10 (04) :986-993

[3] Zirconia needles synthesized inside hexagonal swollen liquid crystals [J].

dos Santos, EP ;

Santilli, CV ;

Pulcínelli, SH ;

Prouzet, E .

CHEMISTRY OF MATERIALS, 2004, 16 (21) :4187-4192

[4] Controlling the growth of zirconia needles precursor from a liquid crystal template [J].

Freitas, F. G. ;

Sarmento, V. H. V. ;

Santilli, C. V. ;

Pulcinelli, S. H. .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2010, 353 (01) :77-82

[5] High-quality zirconia powder resulting from the attempted separation of acetic acid from acrylic acid with zirconium oxychloride [J].

Guo, GY ;

Chen, YL .

JOURNAL OF MATERIALS CHEMISTRY, 2001, 11 (04) :1283-1287

[6] Synthesis of zirconium sols and fibers by electrolysis of zirconium oxychloride [J].

He, T ;

Jiao, XL ;

Chen, DR ;

Lü, MK ;

Yuan, DR ;

Xu, D .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 2001, 283 (1-3) :56-62

[7]

Hench LL, 1998, J AM CERAM SOC, V81, P1705

[8] Microstructure and mechanical properties of mullite/zirconia composites prepared from alumina and zircon under various firing conditions [J].

Koyama, T ;

Hayashi, S ;

Yasumori, A ;

Okada, K ;

Schmucker, M ;

Schneider, H .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 1996, 16 (02) :231-237

[9] Synthesis of long ZrTiO4 fibers by a sol-gel process free of organic components [J].

Lu, QF ;

Chen, DR ;

Jiao, XL .

JOURNAL OF MATERIALS CHEMISTRY, 2003, 13 (05) :1127-1131

[10] CERAMIC FUEL-CELLS [J].

MINH, NQ .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1993, 76 (03) :563-588

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