Wear characteristics of oxide coatings deposited by plasma spraying, high power plasma spraying and detonation gun spraying
- Tampere Univ. of Technology (Finland)
- Aachen Univ. of Technology (Germany)
Oxide coatings are widely used for applications where high wear resistance is of great importance. In this study various oxide coatings deposited by atmospheric plasma spraying (APS), high power plasma spraying (HPPS) and detonation gun spraying (DGS) methods were evaluated. The aim of the work was to compare the characteristics of the coatings deposited by HPPS method with most commonly used APS method and with DGS method, which has been shown to be able to produce oxide coatings of very high quality. The advantage of the HPPS is its high spray rate together with high particle velocity making it a most promising deposition method for oxide coatings. Coatings studied in this work were alumina, alumina-titania and chromia. Wear characteristics of these coatings were evaluated by rubber-wheel abrasion test, abrasive pin-on-disc test, particle erosion test and block-on-ring adhesive wear test. In addition, coatings were evaluated by optical microscopy (microstructure and porosity), microhardness, X-ray diffraction (phase structures) and tensile bond strength measurements. The results showed that coatings deposited by spray methods utilizing higher particle velocities, i.e. HPPS and DGS, have lower porosity and improved wear characteristics over corresponding coatings deposited by conventional APS method. However, also with APS method it was possible to produce coatings of high quality as shown in the case of chromia coatings.
- OSTI ID:
- 379581
- Report Number(s):
- CONF-9509182-; ISBN 0-87170-541-9; TRN: IM9644%%37
- Resource Relation:
- Conference: 1995 National thermal spray conference, Houston, TX (United States), 11-15 Sep 1995; Other Information: PBD: 1995; Related Information: Is Part Of Advances in thermal spray science and technology. Proceedings of the 8. national thermal spray conference; Berndt, C.C.; Sampath, S. [eds.]; PB: 795 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Thermally sprayed alumina coatings with strongly improved wear and corrosion resistance
Abrasion and erosion wear resistance of Cr{sub 3}C{sub 2}-NiCr coatings prepared by plasma, detonation and high-velocity oxyfuel spraying
Related Subjects
ALUMINIUM OXIDES
SPRAY COATING
MICROSTRUCTURE
WEAR RESISTANCE
TITANIUM OXIDES
CHROMIUM OXIDES
POWDERS
PLASMA ARC SPRAYING
FLAME SPRAYING
VELOCITY
OPTICAL MICROSCOPY
POROSITY
MICROHARDNESS
X-RAY DIFFRACTION
ADHESION
CHEMICAL COMPOSITION
EROSION
ABRASION
WEIGHT MEASUREMENT
EXPERIMENTAL DATA