Solid-state spark plasma sintering of super wear resistant B4C–SiC–TiB2 triplex-particulate composites.
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| Title: | Solid-state spark plasma sintering of super wear resistant B4C–SiC–TiB2 triplex-particulate composites. |
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| Authors: | Rodríguez-Rojas, Fernando1 (AUTHOR), Zamora, Victor1 (AUTHOR), Guiberteau, Fernando1 (AUTHOR), Ortiz, Angel L.1 (AUTHOR) alortiz@unex.es |
| Source: | Ceramics International. Feb2023, Vol. 49 Issue 3, p5532-5537. 6p. |
| Subjects: | Solid-state plasmas, Sintering, Sliding wear, Communities, Wear resistance, Ceramic powders |
| Abstract: | B 4 C–SiC–TiB 2 ceramic composites with equal volume fractions of the three phases (i.e. , 1B 4 C–1SiC–1TiB 2) were fabricated by solid-state spark-plasma sintering (SPS) from commercially available B 4 C, SiC, and TiB 2 powders, first optimizing their densification temperature and then investigating for the first time the unlubricated sliding wear of the optimally SPS-ed composite. It is shown that SPS is optimal at 1800 °C (under 75 MPa pressure and 5 min soaking), which is much lower than the temperatures used so far for both the solid-state hot-pressing and SPS of this and other B 4 C–SiC–TiB 2 composites. It is also shown that the optimally SPS-ed 1B 4 C–1SiC–1TiB 2 composite has a triplex-particulate microstructure with evenly distributed carbide and boride grains whose sizes are essentially those of the corresponding starting powders, and that it is ultrahard (i.e. , ∼35 GPa) and relatively tough (i.e. , ∼4 MPa⋅m1/2). Moreover, it is demonstrated that, due to its ultra-high hardness and proneness to form a coherent oxide tribolayer, it is also very immune to wear, possessing an unprecedented super wear resistance to unlubricated sliding contact (i.e. , ∼1.6·108 (N⋅m)/mm³), thanks to which it only undergoes very mild abrasion in the form of superficial plastic scratches with hardly any material removal by micro-fracture. Finally, implications of interest for the ceramics and hard-materials communities are discussed. [ABSTRACT FROM AUTHOR] |
| Copyright of Ceramics International 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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| Items | – Name: Title Label: Title Group: Ti Data: Solid-state spark plasma sintering of super wear resistant B4C–SiC–TiB2 triplex-particulate composites. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Rodríguez-Rojas%2C+Fernando%22">Rodríguez-Rojas, Fernando</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zamora%2C+Victor%22">Zamora, Victor</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Guiberteau%2C+Fernando%22">Guiberteau, Fernando</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ortiz%2C+Angel+L%2E%22">Ortiz, Angel L.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> alortiz@unex.es</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Ceramics+International%22">Ceramics International</searchLink>. Feb2023, Vol. 49 Issue 3, p5532-5537. 6p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Solid-state+plasmas%22">Solid-state plasmas</searchLink><br /><searchLink fieldCode="DE" term="%22Sintering%22">Sintering</searchLink><br /><searchLink fieldCode="DE" term="%22Sliding+wear%22">Sliding wear</searchLink><br /><searchLink fieldCode="DE" term="%22Communities%22">Communities</searchLink><br /><searchLink fieldCode="DE" term="%22Wear+resistance%22">Wear resistance</searchLink><br /><searchLink fieldCode="DE" term="%22Ceramic+powders%22">Ceramic powders</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: B 4 C–SiC–TiB 2 ceramic composites with equal volume fractions of the three phases (i.e. , 1B 4 C–1SiC–1TiB 2) were fabricated by solid-state spark-plasma sintering (SPS) from commercially available B 4 C, SiC, and TiB 2 powders, first optimizing their densification temperature and then investigating for the first time the unlubricated sliding wear of the optimally SPS-ed composite. It is shown that SPS is optimal at 1800 °C (under 75 MPa pressure and 5 min soaking), which is much lower than the temperatures used so far for both the solid-state hot-pressing and SPS of this and other B 4 C–SiC–TiB 2 composites. It is also shown that the optimally SPS-ed 1B 4 C–1SiC–1TiB 2 composite has a triplex-particulate microstructure with evenly distributed carbide and boride grains whose sizes are essentially those of the corresponding starting powders, and that it is ultrahard (i.e. , ∼35 GPa) and relatively tough (i.e. , ∼4 MPa⋅m1/2). Moreover, it is demonstrated that, due to its ultra-high hardness and proneness to form a coherent oxide tribolayer, it is also very immune to wear, possessing an unprecedented super wear resistance to unlubricated sliding contact (i.e. , ∼1.6·108 (N⋅m)/mm³), thanks to which it only undergoes very mild abrasion in the form of superficial plastic scratches with hardly any material removal by micro-fracture. Finally, implications of interest for the ceramics and hard-materials communities are discussed. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Ceramics International 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.ceramint.2022.11.181 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 6 StartPage: 5532 Subjects: – SubjectFull: Solid-state plasmas Type: general – SubjectFull: Sintering Type: general – SubjectFull: Sliding wear Type: general – SubjectFull: Communities Type: general – SubjectFull: Wear resistance Type: general – SubjectFull: Ceramic powders Type: general Titles: – TitleFull: Solid-state spark plasma sintering of super wear resistant B4C–SiC–TiB2 triplex-particulate composites. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Rodríguez-Rojas, Fernando – PersonEntity: Name: NameFull: Zamora, Victor – PersonEntity: Name: NameFull: Guiberteau, Fernando – PersonEntity: Name: NameFull: Ortiz, Angel L. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 02 Text: Feb2023 Type: published Y: 2023 Identifiers: – Type: issn-print Value: 02728842 Numbering: – Type: volume Value: 49 – Type: issue Value: 3 Titles: – TitleFull: Ceramics International Type: main |
| ResultId | 1 |
