INNOVATIVE CHARACTER OF PLASMA SPRAY DEPOSITION METHOD, AT THE CERAMICS POWDER Al<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub>
Abstract
The Atmospheric plasma spraying method (APS) is one of most used methods for deposition on layers with different thickness on surfaces with different degrees of complexity.<BR />This paper presents a new concept of thermal barrier coating for the prevention of delaminating of the sprayed layer and this consists of an adherent layer of Ni Mo Al (90-5-5) and a top coat of Al2O3-TiO2, deposited by atmospheric plasma spraying (APS) on specimens of nodular cast iron of which the camshaft are made of the internal combustion engine.<BR />The samples studied in this paper were obtained by thermal spray using an atmospheric plasma spray installation SPRAYWIZARD - 9MCE.<BR />To highlight results, SEM (Scanning Electron Microscopy) analyses were performed using a Quanta 200 3D Microscope Dual Beam. Using x-ray analysis it was possible to detect the existing phases and constituents in the layer deposited with the plasma spray method and comparisons were made about the composition of the used powders. Testing adhesion and cohesion of the coating by the "scratch" was made with micro tribometer UMTR 2MCTR.
Event details
- Event
- TC15 Youth Symposium 2012
- Technical Committee
- TC15
- Place
- Brasov, ROMANIA
- Time
- 30 May 2012 - 2 June 2012