NDLI: Microstructure, Adhesion and Wear of Plasma Sprayed AlSi-SiC Composite Coatings

Content Provider	Scientific Research Publishing (SCIRP)
Author	Tailor, Satish Sharma, V. K. Mohanty, R. M. Soni, P. R.
Abstract	Al-12.5 wt% Si alloy powder with 15 wt% SiCp was mechanically alloyed (MA) using attrition mill in purified nitrogen atmosphere. The MA processed powder was found to have nano grain size and uniform distribution of SiCp in the AlSi matrix. This MA processed powder was used for atmospheric plasma spraying (APS) for varying distances and currents densities. The coatings obtained were studied by image analyzer, SEM and XRD. Microhardness and wear rate of the coatings were evaluated using Vickers indenter and pin on disk type tribometer, respectively. Adhesion strength of the coatings was measured by interfacial indentation test. The results showed that these coatings have uniform distribution of reinforced SiC particles in the nano crystalline matrix, low porosity (1% - 2%), low wear rates and improved adhe-sion strength. It was also observed that by increasing current density of APS, the adhesive strength increased.
Starting Page	227
Ending Page	232
File Format	HTM / HTML PDF
ISSN	21614881
DOI	10.4236/jsemat.2012.223035
Issue Number	03
Journal	Journal of Surface Engineered Materials and Advanced Technology
Volume Number	02
e-ISSN	2161489X
Language	English
Publisher Date	2012-07-27
Access Restriction	Open
Subject Keyword	Attrition Milling Wear Resistance AlSi-SiC Adhesion Strength Plasma Spray Coating Chemistry & Materials Science Engineering
Content Type	Text
Resource Type	Article

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Microstructure, Adhesion and Wear of Plasma Sprayed AlSi-SiC Composite Coatings