Different Approaches to the Investigation and Testing of the Ni-Based Self-Fluxing Alloy Coatings-A Review. Part 1: General Facts, Wear and Corrosion Investigations

The main aim of this two-part article is to present and arrange the collected important information on widely applicable Ni-based self-fluxing alloy coatings and to point to the variety of investigations considering the period from 2000 to 2013. A survey of the investigations of these coatings obtained by the following deposition technologies will be given: flame spraying, high-velocity oxy-air fuel spraying, detonation gun spraying, electric arc spraying, plasma spraying, plasma-transferred arc welding, and laser cladding. The treated subject is very extensive and is divided into two parts (in the first part wear and corrosion investigations are presented; in the second part the focus is on investigating the impact of external mechanical loading, residual stresses, and the microstructure of coatings). In the first part, following the general facts (terms, deposition technologies, types of investigations, and application), a description and systematization is given of numerous investigations of wear and corrosion as well as cases of the coexistence of wear and corrosion processes.