Influences of atmospheric plasma spraying parameters on
the porosity level of alumina coating on AZ31B magnesium
alloy using response surface methodology |
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Authors: | D Thirumalaikumarasamy K Shanmugam and V Balasubramanian |
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Institution: | Department of Manufacturing Engineering, Annamalai University, Annamalainagar 608002, Chidambaram, Tamil Nadu, India;Department of Manufacturing Engineering, Annamalai University, Annamalainagar 608002, Chidambaram, Tamil Nadu, India;Centre for Materials Joining & Research (CEMAJOR), Department of Manufacturing Engineering, Annamalai University,
Annamalainagar 608002, Tamil Nadu, India |
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Abstract: | The main problem faced in the plasma spraying is the selection of optimum combination of
input variables for achieving the required qualities of coating. This problem can be solved by the
development of relationship between the process parameters (input power, stand-off distance and powder
feed rate) and the coating quality characteristics (porosity,) by response surface methodology. This article
highlights the use of response surface methodology by designing a three-factor five level central composite
rotatable design matrix with full replication for planning, conduction, execution, and development of
empirical relationship. Alumina coating was deposited on AZ31B magnesium alloy using atmospheric
plasma spraying process by varying parameters such as power, stand-off distance and powder feed rate.
Further, response surface methodology was used for the selection of optimum plasma spraying
parameters to achieve desired quality of alumina coating. |
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Keywords: | Atmospheric plasma
spraying Optimization Response surface methodology Alumina coating Porosity |
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