uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Micro-scratch evaluation of rock types - a means to comprehend rock drill wear
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Technology, Department of Engineering Sciences.
2004 In: Tribology International, Vol. 37, 203-210 p.Article in journal (Refereed) Published
Place, publisher, year, edition, pages
2004. Vol. 37, 203-210 p.
Identifiers
URN: urn:nbn:se:uu:diva-91629OAI: oai:DiVA.org:uu-91629DiVA: diva2:164427
Available from: 2004-04-15 Created: 2004-04-15Bibliographically approved
In thesis
1. On the Nature of Cemented Carbide Wear in Rock Drilling
Open this publication in new window or tab >>On the Nature of Cemented Carbide Wear in Rock Drilling
2004 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

WC/Co cemented carbide is a composite material for highly demanding wear applications. The unique combination of hardness (from the WC-phase) and toughness (from the binder Co) gives a material especially suitable for rock drilling. This thesis, investigates the deterioration and wear of these cemented carbide buttons and the correlation to different rock types.

To better understand the nature of the wear of the cemented carbide buttons, the counter surface –the rock- has also been studied. A range of important rock types has been investigated with respect to hardness distribution and scratch response in a micro scale and friction properties when slid against cemented carbides.

The cemented carbide may deteriorate due to a number of mechanisms. The effect of fatigue in the structure was studied in TEM and particle erosion response was used to probe the corresponding mechanical degradation.

Further, homing cross sectioning has been developed and used as a new technique to investigate the presence of weak zones in the surface layer of a drill button. It was found that rock penetration into this layer is a very common mechanism, with profound implications for the nature of the wear.

High resolution scanning electron microscopy has been extensively used to map the deterioration and wear of numerous drill buttons, worn against different rock types in different kinds of drilling applications. Finally, the collected data on the surface damage, the reptile skin formation, the rock intrusion and the properties of the rock are assembled into a new view of the deterioration and wear of cemented carbide in rock drilling.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2004. 74 p.
Series
Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1104-232X ; 964
Keyword
Materials science, cemented carbide, wear, rock drilling, rock, Materialvetenskap
National Category
Materials Engineering
Identifiers
urn:nbn:se:uu:diva-4223 (URN)91-554-5939-0 (ISBN)
Public defence
2004-05-07, Siegbahnsalen, Ångströmlaboratoriet, Polacksbacken, Uppsala, 10:15
Opponent
Supervisors
Available from: 2004-04-15 Created: 2004-04-15Bibliographically approved

Open Access in DiVA

No full text

By organisation
Department of Engineering Sciences

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 371 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf