Study on Porosity of Plasma Sprayed Carbon Nano Tube Reinforced Composite Coatings
DOI:
https://doi.org/10.51983/arme-2014.3.2.2359Keywords:
CNTs, High temperature oxidation, coatings, porosity, image analyserAbstract
Oxidation of metals and alloys took place when they are heated to elevated temperatures in air or highly oxidising environments. Further, for elevated-temperature service the effect of incorporation of Carbon Nano Tubes (CNTs) into various alloy powder coatings on the morphology of the coating surface and corrosion properties has been a topic of technology concern. The present piece of work describes the effect of CNT inclusion in Al2O3 coatings deposited on various boiler steels. In many cases it is found that porosity is an important factor on the coating surface. Knowledge about the extent of these porosity imperfections is critical since they influence a wide range of spray coated properties and behaviors.The aim of this investigation is to find out the range of porosity of the coatings after CNT is added in the alloy powder.
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