Energy loss mechanics in the erosion of cemented tungsten carbide

Journal Article · Mon May 01 00:00:00 EDT 1989 · Scripta Metallurgica; (USA)

DOI:https://doi.org/10.1016/0036-9748(89)90508-5· OSTI ID:6837457

Freinkel, D M ^[1]; Luyckx, S B ^[2]

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1. School of Mechanical Engineering, Univ. of the Witwatersrand, Johannesburg (ZA)
2. Schonland Research Centre, Univ. of the Witwatersrand, Johannesburg (ZA)

The erosion of tungsten carbide has been studied by several researchers under various conditions: the cobalt content of the cemented carbide has been varied from 4.5 to 11.3 wt % Co, the size of the WC grains varied from 0.9 to 5.1 {mu}m, the size of the erodant particles varied from 30 to 630 {mu}m, the velocity of the particles varied from 30 to 507 m/s, and particle incidence angle varied from 15{degrees} to 90{degrees}. While it is generally agreed that with increasing cobalt content and increasing particle velocity the erosion rate of WC-Co increases, there is disagreement on the effect of grain size and angle of incidence. More work was clearly required to explain this disagreement, thus the present investigation was undertaken. The present work differs from previous experimental work in that the erodant particles are 4 mm average diameter and that the present investigation does not neglect the role of plastic deformation in the erosion process and the energy lost in damage to the erodant particles. These two additional energy loss mechanisms have been found to contribute significantly to the interpretation of the present results and of the results previously reported in the literature.

• OSTI ID: 6837457
• Journal Information: Scripta Metallurgica; (USA), Vol. 23:5; ISSN 0036-9748
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
TUNGSTEN CARBIDES
ENERGY LOSSES
COBALT
EROSION
GRAIN SIZE
PARTICLES
PLASTICITY
QUARTZ
VELOCITY
CARBIDES
CARBON COMPOUNDS
CHALCOGENIDES
CRYSTAL STRUCTURE
ELEMENTS
LOSSES
MECHANICAL PROPERTIES
METALS
MICROSTRUCTURE
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
REFRACTORY METAL COMPOUNDS
SILICON COMPOUNDS
SILICON OXIDES
SIZE
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TUNGSTEN COMPOUNDS
360203* - Ceramics
Cermets
& Refractories- Mechanical Properties
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies