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High velocity erosion of CVD diamond coatings by diamond particles

High velocity erosion of CVD diamond coatings by diamond particles
High velocity erosion of CVD diamond coatings by diamond particles
This paper describes a study of the damage mechanisms of diamond coatings subjected to high velocity erosion by diamond particles. The coatings were tested using 70/80 mesh natural and synthetic diamond particles at a velocity of 300 m s-1 and the eroded coatings examined by surface profilometry and scanning electron microscopy. The results have shown that the impacting diamond particles generate radial and lateral cracks in the coatings, and material is removed following the intersection of these cracks with each other and with the surface. The greater strength of the synthetic diamond over the natural diamond is demonstrated by the shorter time to failure of the coating when eroded by the synthetic particles.
damage mechanisms, diamond coatings, high velocity, erosion
0925-9635
32-40
Wheeler, D.W.
a808e074-95a8-4c9a-b531-e205e23b76b2
Wood, R.J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Wheeler, D.W.
a808e074-95a8-4c9a-b531-e205e23b76b2
Wood, R.J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73

Wheeler, D.W. and Wood, R.J.K. (2018) High velocity erosion of CVD diamond coatings by diamond particles. Diamond and Related Materials, 84, 32-40. (doi:10.1016/j.diamond.2018.02.007).

Record type: Article

Abstract

This paper describes a study of the damage mechanisms of diamond coatings subjected to high velocity erosion by diamond particles. The coatings were tested using 70/80 mesh natural and synthetic diamond particles at a velocity of 300 m s-1 and the eroded coatings examined by surface profilometry and scanning electron microscopy. The results have shown that the impacting diamond particles generate radial and lateral cracks in the coatings, and material is removed following the intersection of these cracks with each other and with the surface. The greater strength of the synthetic diamond over the natural diamond is demonstrated by the shorter time to failure of the coating when eroded by the synthetic particles.

Text
Erosion of diamond coatings by diamond grit_Accepted Version - Accepted Manuscript
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More information

Accepted/In Press date: 12 February 2018
e-pub ahead of print date: 13 February 2018
Published date: April 2018
Keywords: damage mechanisms, diamond coatings, high velocity, erosion

Identifiers

Local EPrints ID: 418273
URI: http://eprints.soton.ac.uk/id/eprint/418273
ISSN: 0925-9635
PURE UUID: 719cce7c-1cb6-4a5f-b2dd-1a844a10a214
ORCID for R.J.K. Wood: ORCID iD orcid.org/0000-0003-0681-9239

Catalogue record

Date deposited: 27 Feb 2018 17:30
Last modified: 18 Feb 2021 16:43

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