NDLI: Determination of Thermal Spray Coating Property with Curvature Measurements

Content Provider	Springer Nature Link
Author	Dwivedi, Gopal Nakamura, Toshio Sampath, Sanjay
Copyright Year	2013
Abstract	Real-time curvature measurement of a coating-substrate system during deposition has facilitated the monitoring of coating stresses and provided additional insights into thermal spray deposition mechanisms. However, the non-equilibrium state of coating formation along with harsh spray booth environment introduces complexity not only in data interpretation but also in the coating properties estimation. In this paper, a new procedure is proposed to estimate the elastic modulus of thermal sprayed ceramic coatings using in situ curvature and temperature measurements. In order to correlate the measurable parameters to coating elastic modulus, a systematic study is conducted to develop a suitable methodology. First, various finite element model analyses are carried out to formulate suitable relations between the measurements and elastic modulus. Subsequently, experiments are conducted to validate the procedure to estimate coating moduli. The results are compared with more accurate measurements obtained from post-deposition characterization technique under low temperature thermal cycles. The comparison suggests that the moduli estimated using the proposed procedure are in good agreements with those obtained from the post-deposition technique. Further, the nonlinear response of coatings are evaluated from the estimated moduli during deposition and cool down, which offer additional information on the characteristics of thermal spray coatings.
Starting Page	1337
Ending Page	1347
Page Count	11
File Format	PDF
ISSN	10599630
Journal	Journal of Thermal Spray Technology
Volume Number	22
Issue Number	8
e-ISSN	15441016
Language	English
Publisher	Springer US
Publisher Date	2013-09-04
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	atmospheric plasma spray curvature measurements elastic modulus finite element simulation nonlinear stress-strain relation yttria-stabilized zirconia Surfaces and Interfaces, Thin Films Tribology, Corrosion and Coatings Characterization and Evaluation of Materials Operating Procedures, Materials Treatment Analytical Chemistry
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Materials Chemistry Condensed Matter Physics

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