Investigation of debris of plasma sprayed coatings for understanding wear phenomena

Conference · Fri Dec 30 23:00:00 EST 1994

OSTI ID:160535

Bonte, M De; Economou, S; Ye, X; Celis, J P; Roos, J R ^[1]; Smith, R W ^[2]; Lugscheider, E ^[3]

---

1. MTM, K.U., Leuven (Belgium)
2. Drexel Univ., Philadelphia, PA (United States)
3. RWTH Aachen (Germany). Materials Science Inst.

Information on wear mechanisms and their interactions can be obtained from the investigation of debris. Air and low pressure plasma sprayed TiC-based cermet coatings have been tested under ambient conditions in a pin-on-disk configuration. The morphology, crystallographic structure and composition of loose debris, and of debris sticking to the counterbody were characterized by scanning and transmission electron microscopy. The debris shows irregular morphology and a size up to 100 {micro}m, but clearly consists of finer particles (submicron up to 10 {micro}m) sticking together. Carbide, oxide and metallic particles were identified in the debris, demonstrating that in this type of multiphase coatings complex wear mechanisms, including abrasion, adhesion and tribo-oxidation are involved. The examination of debris and how this contributes in understanding wear mechanisms in thermal sprayed coatings are discussed.

• OSTI ID: 160535
• Report Number(s): CONF-940684--; ISBN 0-87170-509-5
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
CERMETS
CHEMICAL ANALYSIS
CHROMIUM ALLOYS
INTERFACES
IRON ALLOYS
MOLYBDENUM ALLOYS
MORPHOLOGY
NICKEL ALLOYS
PARTICLE SIZE
PARTICULATES
PERFORMANCE
PLASMA ARC SPRAYING
SAPPHIRE
SCANNING ELECTRON MICROSCOPY
SLIDING FRICTION
STRESSES
TANTALUM CARBIDES
TITANIUM ALLOYS
TITANIUM CARBIDES
TRANSMISSION ELECTRON MICROSCOPY
WEAR