Experimental Investigation and Parameter Optimization of Al2O3-40% TiO2 Atmospheric Plasma Spray Coating on SS316 Steel Substrate

2018 ◽  
Vol 5 (2) ◽  
pp. 5012-5020 ◽  
Author(s):  
T. Sreekumar Rajesh ◽  
R. Venkata Rao
Keyword(s):  
Experimental Investigation ◽  
Parameter Optimization ◽  
Plasma Spray ◽  
Steel Substrate ◽  
Spray Coating ◽  
Atmospheric Plasma Spray ◽  
Atmospheric Plasma ◽  
Plasma Spray Coating

scholarly journals The influence of powder feed rate on mechanical properties of atmospheric plasma spray (APS) Al-12Si coating

2019 ◽  
Vol 58 (1) ◽  
pp. 75-81
Author(s):  
Mihailo Mrdak ◽  
Bojan Medjo ◽  
Darko Veljić ◽  
Miodrag Arsić ◽  
Marko Rakin
Keyword(s):  
Mechanical Properties ◽  
Plasma Spray ◽  
Spray Coating ◽  
Fracture Morphology ◽  
Optical Microscope ◽  
Atmospheric Plasma Spray ◽  
Atmospheric Plasma ◽  
Powder Feed ◽  
Feed Control ◽  
Powder Particles

Abstract In this paper, structural and mechanical properties of APS - atmospheric plasma spray coating Al-12Si are presented. The aim of the research was the optimisation of the flow of powder to produce layers with optimal mechanical and structural properties that will be applied to the worn out parts of airplanes. Three groups of samples were produced, by utilising three powder feed rates: 30 g/min, 45 g/min and 60 g/min. Evaluation of layers’ microhardness was done using HV0.3 method and the bond strengthwas determined by testing of tensile strength. Surface morphology of the deposited powder particles was examined on SEM (Scanning Electron Microscope). The microstructure of the coating with the best measured mechanical properties was subsequently examined in etched condition on optical microscope and SEM (in accordance with the standard PN 585005, Pratt & Whitney). Also, fracture morphology of this coating in deposited state was examined using SEM. It was found that powder feed control with atmospheric plasma spraying can produce dense layers of Al-12Si coating with good bond strength.

Preparation and Characterization of Thermal Spray Coating of Glass Microspheres on Metal Substrate

2012 ◽  
Vol 585 ◽  
pp. 502-506 ◽  
Author(s):  
Gaurav Gupta ◽  
Srimant Kumar Mishra ◽  
Sisir Mantry ◽  
Alok Satapathy
Keyword(s):  
Mild Steel ◽  
Plasma Spray ◽  
Steel Substrate ◽  
Volume Ratio ◽  
Spray Coating ◽  
Atmospheric Plasma ◽  
Spherical Particles ◽  
Glass Microspheres ◽  
Coating Materials ◽  
Mild Steel Substrate

Plasma spray technology utilizes the exotic properties of the plasma medium to effect physical, chemical or metallurgical reactions to produce new materials or impart new functional properties to conventional materials. It is in fact a process that includes melting, rapid solidification and quenching taking place simultaneously. As for the coating materials, it is well understood that for a number of unique application, spherical particles are preferred over irregular ones due to low surface area to volume ratio, high density, free flowing ability and close sizing etc. In view of this, the present paper reports on the preparation of glass microspheres coatings on mild steel substrate using plasma spray technology. An 80 kW atmospheric plasma spray set up is used for spraying purpose. Solid glass micro-spheres of average sized 100 micron are used as the coating materials which are deposited at four different power levels on mild steel substrate. The coatings are characterized in terms of their thickness, hardness, density and porosity. The coatability of glass micro-spheres on mild steel is assessed by evaluating the coating deposition efficiency. Different phases present in the coating are ascertained using X-ray diffractography.

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