Effect of TiO2 addition on the microstructure and nanomechanical properties of Al2O3 Suspension Plasma Sprayed coatings

被引：33

作者：

Bannier, E. ^{[1
]}

Vicent, M. ^{[1
]}

Rayon, E. ^{[2
]}

Benavente, R. ^{[2
]}

Salvador, M. D. ^{[2
]}

Sanchez, E. ^{[1
]}

机构：

[1] Univ Jaume 1, Inst Tecnol Ceram, Asociac Invest Ind Ceram, Castellon de La Plana 12006, Spain

[2] Univ Politecn Valencia, Inst Tecnol Mat, Valencia 46022, Spain

来源：

APPLIED SURFACE SCIENCE | 2014年 / 316卷

关键词：

Suspension plasma spraying; Nanostructured coatings; Alumina; Titania; Nanoindentation; ALUMINA-TITANIA COATINGS; NANOSTRUCTURED MATERIALS; MECHANICAL-PROPERTIES;

D O I：

10.1016/j.apsusc.2014.07.168

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：

Alumina-titania coatings are widely used in industry for wear, abrasion or corrosion protection components. Such layers are commonly deposited by atmospheric plasma spraying (APS) using powder as feedstock. In this study, both Al2O3 and Al2O3-13 wt% TiO2 coatings were deposited on austenitic stainless steel coupons by suspension plasma spraying (SPS). Two commercial suspensions of nanosized Al2O3 and TiO2 particles were used as starting materials. The coatings microstructure and phase composition were fully characterised using FEG-SEM and XRD techniques. Nanoindentation technique was used to determine the coatings hardness and elastic modulus properties. Results have shown that the addition of titania to alumina SPS coatings causes different crystalline phases and a higher powder melting rate is reached. The higher melted material achieved, when titania is added leads to higher hardness and elastic modulus when the same spraying parameters are used. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：141 / 146

页数：6

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