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Title: Effect of Al 2 O 3 reinforcement and Al 2 O 3 -13 wt% TiO2 bond coat on plasma sprayed hydroxyapatite coating
Authors: Mittal M.
Nath S.K.
Prakash S.
Published in: Defence Science Journal
Abstract: In present work an attempt has been made to enhance mechanical properties of plasma sprayed hydroxyapatite coating by addition of 10 wt% aluminum oxide. A bond coat of Al 2 O 3 -13TiO2 has been applied to improve strength of hydroxyapatite composite coating. Mechanical properties of coatings with addition of alumina and with incorporation of bond coat have been investigated in accordance with the ASTM C 633-79. Results indicate that the tensile bond strength of hydroxyapatite coating increased by 13 per cent by alumina reinforcement and 25 per cent by both reinforcement and application of bond layer respectively. The area of adhesive failure was found to decrease for hydroxyapatite-Alumina composite coating and hydroxyapatite composite coating with bond coat as compared to pure hydroxyapatite coating. The microharness of specimens was found to increase with reinforcement, however the highest hardness was recorded for bond coat. The microhardness was found to decrease with distance from substrate coating interface. © 2012, DESIDOC.
Citation: Defence Science Journal (2012), 62(3): 193-198
Issue Date: 2012
Publisher: Defense Scientific Information and Documentation Centre
Keywords: AISI 316 L stainless steel
Bond coat
Bond strength
ISSN: 0011748X
Author Scopus IDs: 7005578966
Author Affiliations: Mittal, M., Indian Institute of Technology Roorkee, Roorkee-247 667, India
Nath, S.K., Indian Institute of Technology Roorkee, Roorkee-247 667, India
Prakash, S., Indian Institute of Technology Roorkee, Roorkee-247 667, India
Corresponding Author: Mittal, M.; Indian Institute of Technology Roorkee, Roorkee-247 667, India; email:
Appears in Collections:Journal Publications [MT]

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