Superhard single‐phase (Ti,Cr)B2 ceramics
A nominally pure and dense (Ti0.9Cr0.1)B2 ceramic was produced by spark plasma sintering of powders synthesized by boro/carbothermal reduction of oxides. The synthesized powders were a single phase and had an average particle of 0.4 ± 0.1 μm and an oxygen content of 1.2 wt%. Average Vickers hardness...
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| Veröffentlicht in: | Journal of the American Ceramic Society 2022-08, Vol.105 (8), p.5032-5038 |
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| creator | Feng, Lun Fahrenholtz, William G. Hilmas, Gregory E. Silvestroni, Laura |
| description | A nominally pure and dense (Ti0.9Cr0.1)B2 ceramic was produced by spark plasma sintering of powders synthesized by boro/carbothermal reduction of oxides. The synthesized powders were a single phase and had an average particle of 0.4 ± 0.1 μm and an oxygen content of 1.2 wt%. Average Vickers hardness values of the resulting ceramics increased from 25.9 ± 0.8 GPa at a load of 9.81 N, to 46.3 ± 0.8 GPa at a load of 0.49 N. Compared to the nominally pure TiB2 ceramic obtained under the same processing conditions, the (Ti0.9Cr0.1)B2 ceramic had higher values under the same load due to the finer average grain size (2.4 ± 1.0 μm), higher relative density, and solid solution hardening. The results indicated that the Cr addition promoted densification, suppressed grain growth, and improved the hardness of TiB2 ceramics. This is the first report for dense and single‐phase (Ti,Cr)B2 ceramics as superhard materials.
Vickers hardness as a function of indentation load for superhard (Ti,Cr)B2 ceramics. |
| doi_str_mv | 10.1111/jace.18490 |
| format | Article |
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Vickers hardness as a function of indentation load for superhard (Ti,Cr)B2 ceramics.</description><identifier>ISSN: 0002-7820</identifier><identifier>EISSN: 1551-2916</identifier><identifier>DOI: 10.1111/jace.18490</identifier><language>eng</language><publisher>Columbus: Wiley Subscription Services, Inc</publisher><subject>Ceramic powders ; Ceramics ; Chromium ; chromium diborides ; Densification ; Diamond pyramid hardness ; Grain growth ; Grain size ; Oxygen content ; Plasma sintering ; Sintering (powder metallurgy) ; Solid solutions ; Solution strengthening ; Spark plasma sintering ; Specific gravity ; superhard materials ; Synthesis ; Titanium diboride ; titanium diborides ; Vickers hardness</subject><ispartof>Journal of the American Ceramic Society, 2022-08, Vol.105 (8), p.5032-5038</ispartof><rights>2022 The American Ceramic Society.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><orcidid>0000-0002-6895-9950 ; 0000-0002-8497-0092 ; 0000-0003-4595-0299</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2Fjace.18490$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fjace.18490$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids></links><search><creatorcontrib>Feng, Lun</creatorcontrib><creatorcontrib>Fahrenholtz, William G.</creatorcontrib><creatorcontrib>Hilmas, Gregory E.</creatorcontrib><creatorcontrib>Silvestroni, Laura</creatorcontrib><title>Superhard single‐phase (Ti,Cr)B2 ceramics</title><title>Journal of the American Ceramic Society</title><description>A nominally pure and dense (Ti0.9Cr0.1)B2 ceramic was produced by spark plasma sintering of powders synthesized by boro/carbothermal reduction of oxides. The synthesized powders were a single phase and had an average particle of 0.4 ± 0.1 μm and an oxygen content of 1.2 wt%. Average Vickers hardness values of the resulting ceramics increased from 25.9 ± 0.8 GPa at a load of 9.81 N, to 46.3 ± 0.8 GPa at a load of 0.49 N. Compared to the nominally pure TiB2 ceramic obtained under the same processing conditions, the (Ti0.9Cr0.1)B2 ceramic had higher values under the same load due to the finer average grain size (2.4 ± 1.0 μm), higher relative density, and solid solution hardening. The results indicated that the Cr addition promoted densification, suppressed grain growth, and improved the hardness of TiB2 ceramics. This is the first report for dense and single‐phase (Ti,Cr)B2 ceramics as superhard materials.
Vickers hardness as a function of indentation load for superhard (Ti,Cr)B2 ceramics.</description><subject>Ceramic powders</subject><subject>Ceramics</subject><subject>Chromium</subject><subject>chromium diborides</subject><subject>Densification</subject><subject>Diamond pyramid hardness</subject><subject>Grain growth</subject><subject>Grain size</subject><subject>Oxygen content</subject><subject>Plasma sintering</subject><subject>Sintering (powder metallurgy)</subject><subject>Solid solutions</subject><subject>Solution strengthening</subject><subject>Spark plasma sintering</subject><subject>Specific gravity</subject><subject>superhard materials</subject><subject>Synthesis</subject><subject>Titanium diboride</subject><subject>titanium diborides</subject><subject>Vickers hardness</subject><issn>0002-7820</issn><issn>1551-2916</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNotkE1OwzAQRi0EEqGw4QSR2IAgxWPHznhZovKnSiwoa8u1XZoobYNNhLrjCJyRk5C2fJv5RnqakR4h50CH0Oe2NtYPAXNFD0gCQkDGFMhDklBKWVYgo8fkJMa6X0FhnpDr1671YWGCS2O1em_87_dPuzDRp5fT6qYMV3cstT6YZWXjKTmamyb6s_85IG_342n5mE1eHp7K0SRrIac0E-DEjHPh51zamRISGcfCSSe4M0zmzCkHFgs0uWXoOaAHtJYp4RSgEnxALvZ327D-6Hz81PW6C6v-pWayAOQ5FqqnYE99VY3f6DZUSxM2GqjemtBbE3pnQj-PyvGu8T8Q6VEN</recordid><startdate>202208</startdate><enddate>202208</enddate><creator>Feng, Lun</creator><creator>Fahrenholtz, William G.</creator><creator>Hilmas, Gregory E.</creator><creator>Silvestroni, Laura</creator><general>Wiley Subscription Services, Inc</general><scope>7QQ</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope><orcidid>https://orcid.org/0000-0002-6895-9950</orcidid><orcidid>https://orcid.org/0000-0002-8497-0092</orcidid><orcidid>https://orcid.org/0000-0003-4595-0299</orcidid></search><sort><creationdate>202208</creationdate><title>Superhard single‐phase (Ti,Cr)B2 ceramics</title><author>Feng, Lun ; Fahrenholtz, William G. ; Hilmas, Gregory E. ; Silvestroni, Laura</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p1400-51d5b335ef36cb95682387d6d53da2642d9d1c878a4c28e318e18cc295d918953</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Ceramic powders</topic><topic>Ceramics</topic><topic>Chromium</topic><topic>chromium diborides</topic><topic>Densification</topic><topic>Diamond pyramid hardness</topic><topic>Grain growth</topic><topic>Grain size</topic><topic>Oxygen content</topic><topic>Plasma sintering</topic><topic>Sintering (powder metallurgy)</topic><topic>Solid solutions</topic><topic>Solution strengthening</topic><topic>Spark plasma sintering</topic><topic>Specific gravity</topic><topic>superhard materials</topic><topic>Synthesis</topic><topic>Titanium diboride</topic><topic>titanium diborides</topic><topic>Vickers hardness</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Feng, Lun</creatorcontrib><creatorcontrib>Fahrenholtz, William G.</creatorcontrib><creatorcontrib>Hilmas, Gregory E.</creatorcontrib><creatorcontrib>Silvestroni, Laura</creatorcontrib><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of the American Ceramic Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Feng, Lun</au><au>Fahrenholtz, William G.</au><au>Hilmas, Gregory E.</au><au>Silvestroni, Laura</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Superhard single‐phase (Ti,Cr)B2 ceramics</atitle><jtitle>Journal of the American Ceramic Society</jtitle><date>2022-08</date><risdate>2022</risdate><volume>105</volume><issue>8</issue><spage>5032</spage><epage>5038</epage><pages>5032-5038</pages><issn>0002-7820</issn><eissn>1551-2916</eissn><abstract>A nominally pure and dense (Ti0.9Cr0.1)B2 ceramic was produced by spark plasma sintering of powders synthesized by boro/carbothermal reduction of oxides. The synthesized powders were a single phase and had an average particle of 0.4 ± 0.1 μm and an oxygen content of 1.2 wt%. Average Vickers hardness values of the resulting ceramics increased from 25.9 ± 0.8 GPa at a load of 9.81 N, to 46.3 ± 0.8 GPa at a load of 0.49 N. Compared to the nominally pure TiB2 ceramic obtained under the same processing conditions, the (Ti0.9Cr0.1)B2 ceramic had higher values under the same load due to the finer average grain size (2.4 ± 1.0 μm), higher relative density, and solid solution hardening. The results indicated that the Cr addition promoted densification, suppressed grain growth, and improved the hardness of TiB2 ceramics. This is the first report for dense and single‐phase (Ti,Cr)B2 ceramics as superhard materials.
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Ceramic powders Ceramics Chromium chromium diborides Densification Diamond pyramid hardness Grain growth Grain size Oxygen content Plasma sintering Sintering (powder metallurgy) Solid solutions Solution strengthening Spark plasma sintering Specific gravity superhard materials Synthesis Titanium diboride titanium diborides Vickers hardness |
| title | Superhard single‐phase (Ti,Cr)B2 ceramics |
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