U.S. Department of EnergyOffice of Scientific and Technical Information
Comparison of different hard, metal-like coatings sprayed by plasma and detonation gun processes
Abstract
Structure and wear properties of atmospheric plasma sprayed and detonation gun sprayed coatings prepared from an experimental (Ti,Mo)C-28.4%NiCo powder were compared to coatings sprayed from commercially available WC-12%Co and Cr{sub 3}C{sub 2}-25%NiCr powders. All powders had an agglomerated (spray dried) and sintered structure and nearly the same content of the metallic binder of approximately 20 vol.-%. The powders were characterized by SEM (morphology and cross-sections) and X-ray diffraction (phase composition). The coatings were studied by optical microscope, microhardness measurements, X-ray diffraction analysis and by abrasion and erosion wear tests. The X-ray diffraction patterns of the coatings show that the (Ti,Mo)C-28.4%NiCo powder is characterized by high phase stability in both spray processes, whereas the WC-12%Co powder is prone to significant phase transformations during spraying. The results clearly show the high potential of the experimental (Ti,Mo)C-28.4%NiCo coatings in substituting the conventional systems in wear applications. For instance, it was found that plasma spraying of the (Ti,Mo)C-28.4%NiCo powder with an Ar-H{sub 2} plasma gas resulted in coatings with wear resistance comparable to WC-12%Co coatings. However, detonation gun sprayed WC-12%Co coatings showed somewhat better abrasion wear resistance.
- Authors:
-
- Tampere Univ. of Technology (Finland)
- Fraunhofer Inst. of Ceramic Technologies and Sintered Materials, Dresden (Germany)
- Publication Date:
- OSTI Identifier:
- 377776
- Report Number(s):
- CONF-9509182-
ISBN 0-87170-541-9; TRN: 96:024988
- Resource Type:
- Book
- 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
- Subject:
- 36 MATERIALS SCIENCE; COMPOSITE MATERIALS; SPRAY COATING; MICROSTRUCTURE; MECHANICAL PROPERTIES; TITANIUM CARBIDES; MOLYBDENUM CARBIDES; NICKEL ALLOYS; COBALT ALLOYS; TUNGSTEN CARBIDES; COBALT; CHROMIUM CARBIDES; CHROMIUM ALLOYS; POWDERS; PARTICLE SIZE; SCANNING ELECTRON MICROSCOPY; X-RAY DIFFRACTION; OPTICAL MICROSCOPY; MICROHARDNESS; WEAR RESISTANCE; EROSION; EXPERIMENTAL DATA
Citation Formats
Vuoristo, P, Niemi, K, Maentylae, T, Berger, L M, and Nebelung, M. Comparison of different hard, metal-like coatings sprayed by plasma and detonation gun processes. United States: N. p., 1995.
Web.
Vuoristo, P, Niemi, K, Maentylae, T, Berger, L M, & Nebelung, M. Comparison of different hard, metal-like coatings sprayed by plasma and detonation gun processes. United States.
Vuoristo, P, Niemi, K, Maentylae, T, Berger, L M, and Nebelung, M. 1995.
"Comparison of different hard, metal-like coatings sprayed by plasma and detonation gun processes". United States.
@article{osti_377776,
title = {Comparison of different hard, metal-like coatings sprayed by plasma and detonation gun processes},
author = {Vuoristo, P and Niemi, K and Maentylae, T and Berger, L M and Nebelung, M},
abstractNote = {Structure and wear properties of atmospheric plasma sprayed and detonation gun sprayed coatings prepared from an experimental (Ti,Mo)C-28.4%NiCo powder were compared to coatings sprayed from commercially available WC-12%Co and Cr{sub 3}C{sub 2}-25%NiCr powders. All powders had an agglomerated (spray dried) and sintered structure and nearly the same content of the metallic binder of approximately 20 vol.-%. The powders were characterized by SEM (morphology and cross-sections) and X-ray diffraction (phase composition). The coatings were studied by optical microscope, microhardness measurements, X-ray diffraction analysis and by abrasion and erosion wear tests. The X-ray diffraction patterns of the coatings show that the (Ti,Mo)C-28.4%NiCo powder is characterized by high phase stability in both spray processes, whereas the WC-12%Co powder is prone to significant phase transformations during spraying. The results clearly show the high potential of the experimental (Ti,Mo)C-28.4%NiCo coatings in substituting the conventional systems in wear applications. For instance, it was found that plasma spraying of the (Ti,Mo)C-28.4%NiCo powder with an Ar-H{sub 2} plasma gas resulted in coatings with wear resistance comparable to WC-12%Co coatings. However, detonation gun sprayed WC-12%Co coatings showed somewhat better abrasion wear resistance.},
doi = {},
url = {https://www.osti.gov/biblio/377776},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Dec 31 00:00:00 EST 1995},
month = {Sun Dec 31 00:00:00 EST 1995}
}