Surface and interface characteristics of CeO2 doped Al2O3 coating on solution treated and peak aged AZ91 Mg alloy

被引：16

作者：

Kumar, Sanjeet ^{[1
]}

Kumar, Deepak ^{[1
]}

Jain, Jayant ^{[2
]}

机构：

[1] Indian Inst Technol Delhi, Ind Tribol Machine Dynam & Maintenance Engn Ctr, Room 242,Block 5, New Delhi 110016, India

[2] Indian Inst Technol Delhi, Dept Appl Mech, Room 236,Block 3, New Delhi, India

来源：

SURFACE & COATINGS TECHNOLOGY | 2017年 / 332卷

关键词：

D-gun; Rare earth; Mg alloy; Nanoindentation; MECHANICAL-PROPERTIES; MAGNESIUM ALLOY; CORROSION-RESISTANCE; MICROSTRUCTURAL EVOLUTION; COMPOSITE COATINGS; WEAR-RESISTANCE; THERMAL SPRAY; BEHAVIOR; HARDNESS; RATIO;

D O I：

10.1016/j.surfcoat.2017.07.082

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The present study deals with the development of a ceramic based coating on AZ91 Mg alloy. D-gun thermal spray technique is used to deposit these coatings. The work is divided into two explorations; (i) the effect of substrate (AZ91 alloy) microstructure and (ii) the effect of CeO2 doping in Al2O3 coating. The coating quality is judged by recording hardness (H), elastic modulus (E) and H/E ratio. The microstructural, metallurgical and mechanical properties were recorded using SEM/EDS, XRD and nanoindenter, respectively. The results indicate that there is optimality in the doping concentration of CeO2 in Al2O3. Moreover the coatings deposited on solution treated alloy exhibit superior properties. The improved mechanical response is attributed to the development of new phases.

引用

页码：511 / 521

页数：11

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