Spark plasma sinterability and dry sliding-wear resistance of WC densified with Co, Co+Ni, and Co+Ni+Cr.
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| Title: | Spark plasma sinterability and dry sliding-wear resistance of WC densified with Co, Co+Ni, and Co+Ni+Cr. |
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| Authors: | Boukantar, Aniss-Rabah1 (AUTHOR), Djerdjare, Boubekeur1 (AUTHOR), Guiberteau, Fernando2 (AUTHOR), Ortiz, Angel L.1,2 (AUTHOR) alortiz@unex.es |
| Source: | International Journal of Refractory Metals & Hard Materials. Nov2020, Vol. 92, pN.PAG-N.PAG. 1p. |
| Subjects: | Sliding wear, Spark ignition engines, Material plasticity, Nickel-chromium alloys, Fracture toughness, Plasma temperature, Wear resistance, Mechanical abrasion |
| Abstract: | The spark plasma sinterability and the dry sliding-wear resistance of ultrafine-grained WC densified with ~16.7 vol% of Co, Co+Ni, and Co+Ni+Cr, compositions equivalent to that of the typical WC-10wt.%Co, were investigated and compared critically. Firstly, it was found that the partial substitutions of Co by Ni or by Ni+Cr are detrimental for the pressureless ultrafast sinterability, but much more in the latter than the former case, attributable to the higher eutectic temperatures during liquid-phase sintering. However, it was also observed that, thanks to the auxiliary stress supplementing the sintering stresses, the ultrafast sinterability with pressure is affected by these partial substitutions either not at all (Co by Ni) or very little (Co by Ni+Cr), making it possible in all cases to obtain fully-dense WC cermets with almost no grain growth at the same spark plasma sintering temperature. And secondly, it was found that these cemented carbides are very resistant to dry sliding wear, but that WC-(Co+Ni+Cr) is markedly more so, attributable essentially to its greater hardness. This is due to wear occurring essentially by two-body abrasion dominated by plastic deformation (ploughing), plus some oxidative wear with formation of tribo-oxidation layers that, although not entirely coherent, are nonetheless beneficial for the wear resistance. • A critical comparison has been made between the spark-plasma sinterability and dry sliding-wear resistance of WC densified with Co, Co+Ni, and Co+Ni+Cr. • Partial substitutions of Co by Ni and by Ni+Cr reduce the pressureless ultrafast sinterability of WC. The metal binder (Co, Co+Ni, or Co+Ni+Cr) does not condition, however, the ultrafast sinterability under the typical pressures applied in conventional SPS. • WC-(Co+Ni+Cr) is markedly harder than both WC-Co and WC-(Co+Ni), while still preserving a high fracture toughness. • WC-(Co+Ni+Cr) has excellent intrinsic dry sliding-wear resistance that comparatively exceeds those of WC-Co and WC-(Co+Ni). • Wear of these cemented carbides under dry sliding contact in air occurs principally by two-body abrasion dominated by plastic deformation, with some oxidative wear. [ABSTRACT FROM AUTHOR] |
| 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 |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 145412660 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Spark plasma sinterability and dry sliding-wear resistance of WC densified with Co, Co+Ni, and Co+Ni+Cr. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Boukantar%2C+Aniss-Rabah%22">Boukantar, Aniss-Rabah</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Djerdjare%2C+Boubekeur%22">Djerdjare, Boubekeur</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Guiberteau%2C+Fernando%22">Guiberteau, Fernando</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ortiz%2C+Angel+L%2E%22">Ortiz, Angel L.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> alortiz@unex.es</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Refractory+Metals+%26+Hard+Materials%22">International Journal of Refractory Metals & Hard Materials</searchLink>. Nov2020, Vol. 92, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Sliding+wear%22">Sliding wear</searchLink><br /><searchLink fieldCode="DE" term="%22Spark+ignition+engines%22">Spark ignition engines</searchLink><br /><searchLink fieldCode="DE" term="%22Material+plasticity%22">Material plasticity</searchLink><br /><searchLink fieldCode="DE" term="%22Nickel-chromium+alloys%22">Nickel-chromium alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Fracture+toughness%22">Fracture toughness</searchLink><br /><searchLink fieldCode="DE" term="%22Plasma+temperature%22">Plasma temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Wear+resistance%22">Wear resistance</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+abrasion%22">Mechanical abrasion</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The spark plasma sinterability and the dry sliding-wear resistance of ultrafine-grained WC densified with ~16.7 vol% of Co, Co+Ni, and Co+Ni+Cr, compositions equivalent to that of the typical WC-10wt.%Co, were investigated and compared critically. Firstly, it was found that the partial substitutions of Co by Ni or by Ni+Cr are detrimental for the pressureless ultrafast sinterability, but much more in the latter than the former case, attributable to the higher eutectic temperatures during liquid-phase sintering. However, it was also observed that, thanks to the auxiliary stress supplementing the sintering stresses, the ultrafast sinterability with pressure is affected by these partial substitutions either not at all (Co by Ni) or very little (Co by Ni+Cr), making it possible in all cases to obtain fully-dense WC cermets with almost no grain growth at the same spark plasma sintering temperature. And secondly, it was found that these cemented carbides are very resistant to dry sliding wear, but that WC-(Co+Ni+Cr) is markedly more so, attributable essentially to its greater hardness. This is due to wear occurring essentially by two-body abrasion dominated by plastic deformation (ploughing), plus some oxidative wear with formation of tribo-oxidation layers that, although not entirely coherent, are nonetheless beneficial for the wear resistance. • A critical comparison has been made between the spark-plasma sinterability and dry sliding-wear resistance of WC densified with Co, Co+Ni, and Co+Ni+Cr. • Partial substitutions of Co by Ni and by Ni+Cr reduce the pressureless ultrafast sinterability of WC. The metal binder (Co, Co+Ni, or Co+Ni+Cr) does not condition, however, the ultrafast sinterability under the typical pressures applied in conventional SPS. • WC-(Co+Ni+Cr) is markedly harder than both WC-Co and WC-(Co+Ni), while still preserving a high fracture toughness. • WC-(Co+Ni+Cr) has excellent intrinsic dry sliding-wear resistance that comparatively exceeds those of WC-Co and WC-(Co+Ni). • Wear of these cemented carbides under dry sliding contact in air occurs principally by two-body abrasion dominated by plastic deformation, with some oxidative wear. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab 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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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.ijrmhm.2020.105280 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Sliding wear Type: general – SubjectFull: Spark ignition engines Type: general – SubjectFull: Material plasticity Type: general – SubjectFull: Nickel-chromium alloys Type: general – SubjectFull: Fracture toughness Type: general – SubjectFull: Plasma temperature Type: general – SubjectFull: Wear resistance Type: general – SubjectFull: Mechanical abrasion Type: general Titles: – TitleFull: Spark plasma sinterability and dry sliding-wear resistance of WC densified with Co, Co+Ni, and Co+Ni+Cr. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Boukantar, Aniss-Rabah – PersonEntity: Name: NameFull: Djerdjare, Boubekeur – PersonEntity: Name: NameFull: Guiberteau, Fernando – PersonEntity: Name: NameFull: Ortiz, Angel L. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 11 Text: Nov2020 Type: published Y: 2020 Identifiers: – Type: issn-print Value: 02634368 Numbering: – Type: volume Value: 92 Titles: – TitleFull: International Journal of Refractory Metals & Hard Materials Type: main |
| ResultId | 1 |
