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Effect of TaC and TiC on the friction and dry sliding wear of WC–6wt.% Co cemented carbides against steel counterfaces.

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Title: Effect of TaC and TiC on the friction and dry sliding wear of WC–6wt.% Co cemented carbides against steel counterfaces.
Authors: van der Merwe, R.1, Sacks, N.1 Natasha.Sacks@wits.ac.za
Source: International Journal of Refractory Metals & Hard Materials. Nov2013, Vol. 41, p94-102. 9p.
Subjects: Steel, Tantalum compounds, Titanium carbide, Sliding friction, Tungsten carbide, Mechanical wear
Abstract: Abstract: The friction and sliding wear characteristics of a WC–6wt.% Co alloy to which minor amounts of refractory carbides TiC, TaC and NbC were added have been systematically investigated. The wear behavior was characterized by sliding the carbide alloys against mild and 304 stainless steels in a pin-on-disc configuration and determining the associated wear mechanisms. The influence of applied load on the friction and wear response was also analyzed. The addition of less than 1wt.% TaC was found to improve the wear resistance. The combined addition of TaC and TiC did not provide a significant improvement in the wear resistance. The friction response of the mild steel against each carbide grade followed the same pattern as sliding progressed, while that of the stainless steels was erratic. In general the 304 stainless steels had higher wear rates than the mild steels against all three carbide grades despite having a higher hardness. Oxidation of the steel and carbides reduced the friction at an increased applied load. No general correlation was found between the friction coefficient, the wear coefficient and the volumetric material loss for the carbide-steel sliding pairs. The dominant wear mechanisms for the carbides were typically preferential removal of the binder, cracking and fragmentation of the carbide grains, carbide grain pull-out and tribofilm formation. The dominant wear mechanism for the steels was plastic deformation with the TaC-hardmetal grade causing severe mechanical damage on the stainless steel surface. [Copyright &y& Elsevier]
Copyright of International Journal of Refractory Metals & Hard Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 90313035
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  Label: Title
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  Data: Effect of TaC and TiC on the friction and dry sliding wear of WC–6wt.% Co cemented carbides against steel counterfaces.
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  Data: <searchLink fieldCode="AR" term="%22van+der+Merwe%2C+R%2E%22">van der Merwe, R.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Sacks%2C+N%2E%22">Sacks, N.</searchLink><relatesTo>1</relatesTo><i> Natasha.Sacks@wits.ac.za</i>
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Refractory+Metals+%26+Hard+Materials%22">International Journal of Refractory Metals & Hard Materials</searchLink>. Nov2013, Vol. 41, p94-102. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Steel%22">Steel</searchLink><br /><searchLink fieldCode="DE" term="%22Tantalum+compounds%22">Tantalum compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Titanium+carbide%22">Titanium carbide</searchLink><br /><searchLink fieldCode="DE" term="%22Sliding+friction%22">Sliding friction</searchLink><br /><searchLink fieldCode="DE" term="%22Tungsten+carbide%22">Tungsten carbide</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+wear%22">Mechanical wear</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: The friction and sliding wear characteristics of a WC–6wt.% Co alloy to which minor amounts of refractory carbides TiC, TaC and NbC were added have been systematically investigated. The wear behavior was characterized by sliding the carbide alloys against mild and 304 stainless steels in a pin-on-disc configuration and determining the associated wear mechanisms. The influence of applied load on the friction and wear response was also analyzed. The addition of less than 1wt.% TaC was found to improve the wear resistance. The combined addition of TaC and TiC did not provide a significant improvement in the wear resistance. The friction response of the mild steel against each carbide grade followed the same pattern as sliding progressed, while that of the stainless steels was erratic. In general the 304 stainless steels had higher wear rates than the mild steels against all three carbide grades despite having a higher hardness. Oxidation of the steel and carbides reduced the friction at an increased applied load. No general correlation was found between the friction coefficient, the wear coefficient and the volumetric material loss for the carbide-steel sliding pairs. The dominant wear mechanisms for the carbides were typically preferential removal of the binder, cracking and fragmentation of the carbide grains, carbide grain pull-out and tribofilm formation. The dominant wear mechanism for the steels was plastic deformation with the TaC-hardmetal grade causing severe mechanical damage on the stainless steel surface. [Copyright &y& Elsevier]
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  Label:
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  Data: <i>Copyright of International Journal of Refractory Metals & Hard Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.ijrmhm.2013.02.009
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      – Code: eng
        Text: English
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        PageCount: 9
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        Type: general
      – SubjectFull: Tantalum compounds
        Type: general
      – SubjectFull: Titanium carbide
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      – SubjectFull: Sliding friction
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      – SubjectFull: Tungsten carbide
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      – SubjectFull: Mechanical wear
        Type: general
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      – TitleFull: Effect of TaC and TiC on the friction and dry sliding wear of WC–6wt.% Co cemented carbides against steel counterfaces.
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            – D: 01
              M: 11
              Text: Nov2013
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              Y: 2013
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              Value: 41
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