Microstructure characteristics of Al2O3-13 wt.% TiO2 coating plasma spray deposited with nanocrystalline powders

被引：53

作者：

Zhang, Jianxin ^{[1
]}

He, Jining ^{[1
]}

Dong, Yanchun ^{[1
]}

Li, Xiangzhi ^{[1
]}

Yan, Dianran ^{[1
]}

机构：

[1] Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R China

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2008年 / 197卷 / 1-3期

关键词：

nanostructured coatings; microstructure; Al2O3-TiO2; coating; plasma spray;

D O I：

10.1016/j.jmatprotec.2007.06.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nanostructured Al2O3-13 wt.% TiO2 coating was fabricated by plasma spray with nanocrystalline powders and the microstructures of the feedstock and the coating were characterized by means of XRD, SEM and TEM. It was found that three forms of substructure existed in the coating: one evolving from the unmelted part of the feedstock and showing a round-shaped morphology; one resembling the liquid-phase-sintered structure consisting of the flattened partially melted region and fully melted region; another being of the particulate-reinforced-solid solution type with fine particles distributed in the matrix The TEM analysis revealed that partially melted alpha-Al2O3 particles were in the size range of 20-70 nm and were embedded in the TiO2-rich matrix. The mechanism of the substructure formation was also explained in terms of the melting and flattening behavior of the powders during plasma spray processing. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：31 / 35

页数：5

共 16 条

[1] Improved interfacial mechanical properties of Al2O3-13wt%TiO2 plasma-sprayed coatings derived from nanocrystalline powders [J].

Bansal, P ;

Padture, NP ;

Vasiliev, A .

ACTA MATERIALIA, 2003, 51 (10) :2959-2970

[2] SPLAT-QUENCH SOLIDIFICATION - ESTIMATING THE MAXIMUM SPREADING OF A DROPLET IMPACTING A SOLID-SURFACE [J].

BENNETT, T ;

POULIKAKOS, D .

JOURNAL OF MATERIALS SCIENCE, 1993, 28 (04) :963-970

[3] Nanostructured zirconia coating prepared by atmospheric plasma spraying [J].

Chen, H ;

Ding, CX .

SURFACE & COATINGS TECHNOLOGY, 2002, 150 (01) :31-36

[4] Development and implementation of plasma sprayed nanostructured ceramic coatings [J].

Gell, M ;

Jordan, EH ;

Sohn, YH ;

Goberman, D ;

Shaw, L ;

Xiao, TD .

SURFACE & COATINGS TECHNOLOGY, 2001, 146 :48-54

[5] Microstructure development of Al2O3-13wt.%TiO2 plasma sprayed coatings derived from nanocrystalline powders [J].

Goberman, D ;

Sohn, YH ;

Shaw, L ;

Jordan, E ;

Gell, M .

ACTA MATERIALIA, 2002, 50 (05) :1141-1152

[6] Fabrication and evaluation of plasma sprayed nanostructured alumina-titania coatings with superior properties [J].

Jordan, EH ;

Gell, M ;

Sohn, YH ;

Goberman, D ;

Shaw, L ;

Jiang, S ;

Wang, M ;

Xiao, TD ;

Wang, Y ;

Strutt, P .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 301 (01) :80-89

[7] Plasma spray synthesis of nanomaterial powders and deposits [J].

Karthikeyan, J ;

Berndt, CC ;

Tikkanen, J ;

Reddy, S ;

Herman, H .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 238 (02) :275-286

[8] Thermal sprayed nanostructured WC/Co hardcoatings [J].

Kear, BH ;

Sadangi, RK ;

Jain, M ;

Yao, R ;

Kalman, Z ;

Skandan, G ;

Mayo, WE .

JOURNAL OF THERMAL SPRAY TECHNOLOGY, 2000, 9 (03) :399-406

[9] Bimodal distribution of mechanical properties on plasma sprayed nanostructured partially stabilized zirconia [J].

Lima, RS ;

Kucuk, A ;

Berndt, CC .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 327 (02) :224-232

[10] Integrity of nanostructured partially stabilized zirconia after plasma spray processing [J].

Lima, RS ;

Kucuk, A ;

Berndt, CC .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 313 (1-2) :75-82

← 1 2 →