Wear aspects of internal combustion engine valves

Because the surface engineering is becoming an increasingly viable alternative to the constructive changes made to improve the efficiency of internal combustion engines, have been proposed and tested various types of coatings of some organs of internal combustion engines. One vital organ is the engi...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2016-08, Vol.147 (1), p.12036
Main Authors: Pan uru, M, Chicet, D, Paulin, C, Alexandru, A, Munteanu, C
Format: Article
Language:English
Subjects:
Aluminum
Antioxidants
Coatings
Corrosion
Corrosive wear
Engine valves
Internal combustion engines
Nickel
Organs
Oxidizing agents
Plasma spraying
Yttria-stabilized zirconia
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Summary:Because the surface engineering is becoming an increasingly viable alternative to the constructive changes made to improve the efficiency of internal combustion engines, have been proposed and tested various types of coatings of some organs of internal combustion engines. One vital organ is the engine valves, which is subjected during operation to combined thermal, mechanical, corrosion and wear solicitations, which are leading to severe corrosion and complete breakdown. In this paper were analyzed aspects of valves wear and the active surfaces were coated using the atmospheric plasma spraying method (APS) with two commercial powders: Ni-Al and YSZ. Microstructural analyzes were made on these layers and also observations regarding the possibility of using them as thermal barrier and anti-oxidant coatings.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/147/1/012036