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Vojnotehnički glasnik
2015, vol. 63, iss. 3, pp. 137-159
article language: English
document type: Professional Paper
doi:10.5937/vojtehg63-7064


Characteristics of APS and VPS plasma spray processes
IMTEL Institute, Belgrade

e-mail: miki@imtelkom.ac.rs

Project

Micromechanical criteria of damage and fracture (MESTD - 174004)
Development of covering and core production technology based on local raw materials for manufacturing of special coated electrodes designed for steel arc welding (MESTD - 34016)

Abstract

Plasma is an electrically conductive gas containing ions, electrons and neutral molecules. This state of matter is created by an electrical discharge and can be maintained at steady state by introducing alternating or direct current. The paper describes the structure of plasma, the thermodynamic characteristics and a method of creating plasma that allow the application of plasma as a source of energy for plasma spray processes. In general, all existing materials in a form of powder may be deposited by plasma coating on the surfaces of various materials. At high temperatures, powder material particles are introduced into a conductive plasma gas, melting and accelerating to the substrate to form coatings. The wide use of plasma spray coatings in all industrial areas is of particular importance, because different combinations of surface layers can significantly increase the resistance of machine parts to: wear, abrasion, erosion, cavitation, corrosion and fatigue resistance at low and elevated temperatures with increased resource and reliability of the parts in service.

Keywords

References

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