Plasma-sprayed wear-resistant coatings with respect to ecological aspects

A conceptual model for evaluating eco-efficiency of thermal spraying processes

“…If it is not possible, the impacts should be minimised by reducing dust residue, radiation, and noise, consistent with the current legislation. Similarly, the sprayed coating must be free of materials harmful to the environment, human health, and safety [ 37 ].…”

“…The ‘points of contact’ mentioned by Steinhäuser et al [ 37 ] refer to the interactions that exist between materials (metallic, ceramic, polymeric) with the environment, requiring the use of a technology capable of protecting materials against corrosion and wear caused by contact with the environment. Surface techniques, such as thermal spraying, are a viable alternative to produce protective coatings, generating numerous contacts with the environment and providing products while generating waste from the process.…”

Tribological Behavior of Bronze Composite Coatings Obtained by Plasma Thermal Spraying

“…Due to the flexibility of the process and the diversity of applicable coating materials, thermal spraying has reached acceptance results in different industries for a wide field of applications, such as wear and/or corrosion applications (glass mold industry, valves, fan blades, etc. ), heat insulation, electrical insulation, improvement of electrical conductivity and biocompatible implants [15,16]. Among the thermal spraying, plasma spraying is very used to obtain ceramic coatings mainly because the high temperature of the plasma (maximum of about 14000 K) allows the powder to melt, obtaining dense coatings, with low porosity and good adhesion with the substrate [17].…”