Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/41746

Title

Fatigue and mechanical properties of nanostructured WC-Co coatings

Author(s)

Ibrahim, A.;  Berndt, Christopher C.

Abstract

Nanostructured materials and nanocomposites have the potential to have a dramatic impact on technological progress in the 21st century. Of great interest, is the outstanding deformation behavior of nanostructured materials and nanocomposites. In this study, the fatigue and mechanical properties of HVOF sprayed nanostructured and conventional WC-Co coatings were investigated. High velocity oxy-fuel process was used to spray the WC-12Co from a feedstock in which the WC phase was mainly in the micron size range (conventional) or contains a significant fraction of nanosized grains (multimodal).The fatigue strength of coatings deposited onto Aluminum alloy showed that the nanostructured WC-Co coated specimens exhibited higher fatigue strength compared to the conventional WC-Co coatings. Microhardness test was performed. Relationships between the microstructures and mechanical properties were discussed.

Publication type

Conference paper

Source

Thermal Spray 2004: Advances in technology and application: Proceedings of the International Thermal Spray Conference, Osaka, Japan, 10-12 May 2004, pp. 878-880

Publication year

2004

Keyword(s)

Coatings;  Cobalt;  Fatigue resistance;  Feedstock powder;  High velocity oxy-fuel;  HVOF;  Microstructure;  Nanostructured coatings;  Nanostructured materials;  Particle size analysis;  Porosity;  Probability;  Residual stresses;  Strength of materials;  Surface roughness;  Thermal spraying;  Tungsten carbide;  Wear resistance

Publisher

ASM International

ISBN

9780871708090, 0871708094

Publisher URL

http://books.google.com/books?id=ZuO5x1lyRa0C

Peer reviewed