Laser induced structural and microstructural transformations of plasma sprayed Al2O3 coatings

Krishnan, R. ; Dash, S. ; Babu Rao, C. ; Subba Rao, R. V. ; Tyagi, A. K. ; Baldev Raj, (2001) Laser induced structural and microstructural transformations of plasma sprayed Al2O3 coatings Scripta Materialia, 45 (6). pp. 693-700. ISSN 1359-6462

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S13596...

Related URL: http://dx.doi.org/10.1016/S1359-6462(01)01081-8

Abstract

Air plasma sprayed Al2O3 coatings on metallic substrates suffer from porosities and metastable polymorphs. In this study, laser treatment employed to improve the coating properties resulted in transformation of the as-sprayed coating predominantly consisting of metastable γ-Al2O3 into thermodynamically stable α-Al2O3 phase with enhanced microhardness and reduced surface roughness.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Coating; X-ray Diffraction; Ceramics; Phase Transformations; Laser Treatment
ID Code:40385
Deposited On:24 May 2011 04:45
Last Modified:24 May 2011 04:45

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