Effect of spraying power on the microstructure and mechanical properties of supersonic plasma-sprayed Ni-based alloy coatings

被引：85

作者：

Zhang, X. C. ^{[1
,2
]}

Xu, B. S. ^{[3
]}

Tu, S. T. ^{[1
]}

Xuan, F. Z. ^{[1
]}

Wang, H. D. ^{[3
]}

Wu, Y. X. ^{[2
]}

机构：

[1] E China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

[2] Shanghai Jiao Tong Univ, Shanghai Key Lab Mat Laser Proc & Modificat, Shanghai 200030, Peoples R China

[3] Natl Key Lab Remfg, Beijing 100072, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2008年 / 254卷 / 20期

关键词：

plasma spraying; spraying power; porosity; mechanical properties; statistical analysis;

D O I：

10.1016/j.apsusc.2008.03.148

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The aim of this paper was to investigate the microstructure and mechanical properties of the supersonic plasma-sprayed Ni-Cr-B-Si-C coatings prepared at different spraying powers. The microstructure, phase composition, porosity, Young's modulus, micro-hardness, and residual stresses of the coatings were investigated and determined. The variations of the porosity, Young's modulus and micro-hardness of the coatings were evaluated by using statistical method. Results showed that the variations of porosity, Young's modulus and micro-hardness of the coatings followed the Weibull distributions. With increasing the porosity, the micro-hardness and Young's modulus of the coating decreased. The mean value of the Young's modulus of the coating calculated from Weibull plot was almost proportional to the square root of the micro-hardness of the coating. With increasing the power, Young's modulus of the coating increased, which, in turn, resulted in the increment of the residual stress at the coating surface. (c) 2008 Published by Elsevier B.V.

引用

页码：6318 / 6326

页数：9

共 36 条

[1] Investigation of the relationship between elastic modulus and hardness based on depth-sensing indentation measurements [J].

Bao, YW ;

Wang, W ;

Zhou, YC .

ACTA MATERIALIA, 2004, 52 (18) :5397-5404

[2] CHARACTERIZATION OF MICROSTRUCTURAL DEFECTS IN PLASMA-SPRAYED THERMAL BARRIER COATINGS [J].

BENGTSSON, P ;

JOHANNESSON, T .

JOURNAL OF THERMAL SPRAY TECHNOLOGY, 1995, 4 (03) :245-251

[3] Microstructure and mechanical properties of plasma sprayed nanostructured TiO2-Al composite coatings [J].

Chwa, SO ;

Klein, D ;

Toma, FL ;

Bertrand, G ;

Liao, HL ;

Coddet, C ;

Ohmori, A .

SURFACE & COATINGS TECHNOLOGY, 2005, 194 (2-3) :215-224

[4]

Coudert J.F., 1993, P 1993 NAT THERM SPR, P19

[5] Microstructure of CrN coatings produced by PVD techniques [J].

Cunha, L ;

Andritschky, M ;

Pischow, K ;

Wang, Z .

THIN SOLID FILMS, 1999, 355 :465-471

[6] Application of image analysis for characterization of porosity in thermal spray coatings and correlation with small angle neutron scattering [J].

Deshpande, S ;

Kulkarni, A ;

Sampath, S ;

Herman, H .

SURFACE & COATINGS TECHNOLOGY, 2004, 187 (01) :6-16

[7]

ERICKSON LC, 1998, THESIS U BRIT COLUMB

[8]

FOWLER DB, 1990, ADV MATER PROCESS, V138, P41

[9] High hardness alumina coatings prepared by low power plasma spraying [J].

Gao, Y ;

Xu, XL ;

Yan, ZJ ;

Xin, G .

SURFACE & COATINGS TECHNOLOGY, 2002, 154 (2-3) :189-193

[10]

GILL SC, 1991, THESIS U CAMBRIDGE C

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