Characterization of wear damage in coatings by optical profilometry

Characterization of interfacial morphology in polymer electrolyte fuel cells: Micro-porous layer and catalyst layer surfaces

“…To ensure that the sputtering process did not induce any artificial roughness to the tablet surface; arbitrary regions on the surface were scanned with an SEM before and after gold sputtering, roughness parameters obtained from the SEM images were averaged and compared for closeness [27]. Characterization of wear damages in coatings [30], measurement of surface roughness of geosynthetic materials [31], quantification of changes in topographic structures of the skin [32] are some other applications that involve the use of optical profilometry for surface characterization.…”

HVOF sprayed coatings of nano-agglomerated tungsten-carbide/cobalt powders for water droplet erosion application

“…Moreover, oxidized particle prevents the strong inter-splat bonding [12]. These chemical and metallurgical reactions strongly depend on the velocity and temperature of the spray particles [8,13]. They can impair the mechanical properties specially the fracture toughness which is an important parameter for wear and erosion resistance [14].…”

“…They are next propelled at high velocities toward the substrate to form splats that stack on each other and generate the coatings. Thermal spray processes involve high-turbulence flow of material (gases, molten, semi-molten and/or solid particles) and high cooling rates [8]. Therefore, they often suffer from some common flaws in the resulting microstructures such as porosity, crack, low intersplat adhesion and unstable interface between the matrix and hard reinforcement [8,9].…”

“…Thermal spray processes involve high-turbulence flow of material (gases, molten, semi-molten and/or solid particles) and high cooling rates [8]. Therefore, they often suffer from some common flaws in the resulting microstructures such as porosity, crack, low intersplat adhesion and unstable interface between the matrix and hard reinforcement [8,9]. Numerous studies have been done to improve coatings' properties by the choice of process, optimization of the process parameters and modifying the feedstock [7][8][9][10].…”

Properties of alumina–titania coatings prepared by laser-assisted air plasma spraying

“…Two samples were tested for each types produced in the study. The volume of the material abraded away during the abrasion test was measured via optical profilometry [19].…”