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Preparation and Mechanical Properties of High-Entropy Ceramics (TiZrHfNbTa)C
We prepared dense high-entropy ceramic material (TiZrHfNbTa)C by hot pressing; the optimum hot-pressing temperature is 2000°C. At lower temperatures, zirconium oxides, hafnium oxides, and undissolved carbides were observed in the ceramic composition. The strength of the resulting ceramics at room te...
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| Published in: | Journal of superhard materials 2022-10, Vol.44 (5), p.323-330 |
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| Main Authors: | , , , , , |
| Format: | Article |
| Language: | English |
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| cites | cdi_FETCH-LOGICAL-c316t-1bc604e9c6b6d8543a02467488849e7e0c3f0343887dbd5f3a1720ae3c5876ef3 |
| container_end_page | 330 |
| container_issue | 5 |
| container_start_page | 323 |
| container_title | Journal of superhard materials |
| container_volume | 44 |
| creator | Vedel, D. V. Mazur, P. V. Grigoriev, O. M. Melakh, L. M. Bega, M. D. Kozak, I. V. |
| description | We prepared dense high-entropy ceramic material (TiZrHfNbTa)C by hot pressing; the optimum hot-pressing temperature is 2000°C. At lower temperatures, zirconium oxides, hafnium oxides, and undissolved carbides were observed in the ceramic composition. The strength of the resulting ceramics at room temperature was 394 ± 72 MPa, at a temperature of 1600°С, it was 119 ± 31 MPa. For pure carbides, a significant drop in hardness was observed at an increased load on the indenter, while for (TiZrHfNbTa)C, hardness is retained under any load. To achieve the maximum hardness and strength of high-entropy ceramics (TiZrHfNbTa)C, the amount of ZrO
2
and HfO
2
in the composition of ceramics should be decreased with a simultaneous decrease in grain size by using submicrometer-scale powders and selecting proper technological modes of production. |
| doi_str_mv | 10.3103/S1063457622050094 |
| format | article |
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2
and HfO
2
in the composition of ceramics should be decreased with a simultaneous decrease in grain size by using submicrometer-scale powders and selecting proper technological modes of production.</description><identifier>ISSN: 1063-4576</identifier><identifier>EISSN: 1934-9408</identifier><identifier>DOI: 10.3103/S1063457622050094</identifier><language>eng</language><publisher>Moscow: Pleiades Publishing</publisher><subject>Carbides ; Ceramics ; Chemistry ; Chemistry and Materials Science ; Composition ; Entropy ; Grain size ; Hafnium oxide ; Hardness ; Hot pressing ; Mechanical properties ; Physical Chemistry ; Production ; Properties ; Room temperature ; Structure ; Zirconium dioxide ; Zirconium oxides</subject><ispartof>Journal of superhard materials, 2022-10, Vol.44 (5), p.323-330</ispartof><rights>Allerton Press, Inc. 2022. ISSN 1063-4576, Journal of Superhard Materials, 2022, Vol. 44, No. 5, pp. 323–330. © Allerton Press, Inc., 2022. Ukrainian Text © The Author(s), 2022, published in Nadtverdi Materialy, 2022, Vol. 44, No. 5, pp. 29–38.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c316t-1bc604e9c6b6d8543a02467488849e7e0c3f0343887dbd5f3a1720ae3c5876ef3</citedby><cites>FETCH-LOGICAL-c316t-1bc604e9c6b6d8543a02467488849e7e0c3f0343887dbd5f3a1720ae3c5876ef3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Vedel, D. V.</creatorcontrib><creatorcontrib>Mazur, P. V.</creatorcontrib><creatorcontrib>Grigoriev, O. M.</creatorcontrib><creatorcontrib>Melakh, L. M.</creatorcontrib><creatorcontrib>Bega, M. D.</creatorcontrib><creatorcontrib>Kozak, I. V.</creatorcontrib><title>Preparation and Mechanical Properties of High-Entropy Ceramics (TiZrHfNbTa)C</title><title>Journal of superhard materials</title><addtitle>J. Superhard Mater</addtitle><description>We prepared dense high-entropy ceramic material (TiZrHfNbTa)C by hot pressing; the optimum hot-pressing temperature is 2000°C. At lower temperatures, zirconium oxides, hafnium oxides, and undissolved carbides were observed in the ceramic composition. The strength of the resulting ceramics at room temperature was 394 ± 72 MPa, at a temperature of 1600°С, it was 119 ± 31 MPa. For pure carbides, a significant drop in hardness was observed at an increased load on the indenter, while for (TiZrHfNbTa)C, hardness is retained under any load. To achieve the maximum hardness and strength of high-entropy ceramics (TiZrHfNbTa)C, the amount of ZrO
2
and HfO
2
in the composition of ceramics should be decreased with a simultaneous decrease in grain size by using submicrometer-scale powders and selecting proper technological modes of production.</description><subject>Carbides</subject><subject>Ceramics</subject><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>Composition</subject><subject>Entropy</subject><subject>Grain size</subject><subject>Hafnium oxide</subject><subject>Hardness</subject><subject>Hot pressing</subject><subject>Mechanical properties</subject><subject>Physical Chemistry</subject><subject>Production</subject><subject>Properties</subject><subject>Room temperature</subject><subject>Structure</subject><subject>Zirconium dioxide</subject><subject>Zirconium oxides</subject><issn>1063-4576</issn><issn>1934-9408</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNp1kE1LAzEQhoMoWKs_wFvAix5WJ5vvoyxqhaoF68XLks0m7ZZ2d022h_57Uyp4EE8zzPsx8CB0SeCWEqB37wQEZVyKPAcOoNkRGhFNWaYZqOO0Jznb66foLMYVAOeayhGazoLrTTBD07XYtDV-cXZp2saaNZ6FrndhaFzEnceTZrHMHtohHXe4cMFsGhvx9bz5DBP_Ws3NTXGOTrxZR3fxM8fo4_FhXkyy6dvTc3E_zSwlYshIZQUwp62oRK04owZyJiRTSjHtpANLPVBGlZJ1VXNPDZE5GEctV1I4T8fo6tDbh-5r6-JQrrptaNPLMpcsTyBA8-QiB5cNXYzB-bIPzcaEXUmg3EMr_0BLmfyQicnbLlz4bf4_9A0wwmwC</recordid><startdate>20221001</startdate><enddate>20221001</enddate><creator>Vedel, D. V.</creator><creator>Mazur, P. V.</creator><creator>Grigoriev, O. M.</creator><creator>Melakh, L. M.</creator><creator>Bega, M. D.</creator><creator>Kozak, I. V.</creator><general>Pleiades Publishing</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20221001</creationdate><title>Preparation and Mechanical Properties of High-Entropy Ceramics (TiZrHfNbTa)C</title><author>Vedel, D. V. ; Mazur, P. V. ; Grigoriev, O. M. ; Melakh, L. M. ; Bega, M. D. ; Kozak, I. V.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c316t-1bc604e9c6b6d8543a02467488849e7e0c3f0343887dbd5f3a1720ae3c5876ef3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Carbides</topic><topic>Ceramics</topic><topic>Chemistry</topic><topic>Chemistry and Materials Science</topic><topic>Composition</topic><topic>Entropy</topic><topic>Grain size</topic><topic>Hafnium oxide</topic><topic>Hardness</topic><topic>Hot pressing</topic><topic>Mechanical properties</topic><topic>Physical Chemistry</topic><topic>Production</topic><topic>Properties</topic><topic>Room temperature</topic><topic>Structure</topic><topic>Zirconium dioxide</topic><topic>Zirconium oxides</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Vedel, D. V.</creatorcontrib><creatorcontrib>Mazur, P. V.</creatorcontrib><creatorcontrib>Grigoriev, O. M.</creatorcontrib><creatorcontrib>Melakh, L. M.</creatorcontrib><creatorcontrib>Bega, M. D.</creatorcontrib><creatorcontrib>Kozak, I. V.</creatorcontrib><collection>CrossRef</collection><jtitle>Journal of superhard materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Vedel, D. V.</au><au>Mazur, P. V.</au><au>Grigoriev, O. M.</au><au>Melakh, L. M.</au><au>Bega, M. D.</au><au>Kozak, I. V.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Preparation and Mechanical Properties of High-Entropy Ceramics (TiZrHfNbTa)C</atitle><jtitle>Journal of superhard materials</jtitle><stitle>J. Superhard Mater</stitle><date>2022-10-01</date><risdate>2022</risdate><volume>44</volume><issue>5</issue><spage>323</spage><epage>330</epage><pages>323-330</pages><issn>1063-4576</issn><eissn>1934-9408</eissn><abstract>We prepared dense high-entropy ceramic material (TiZrHfNbTa)C by hot pressing; the optimum hot-pressing temperature is 2000°C. At lower temperatures, zirconium oxides, hafnium oxides, and undissolved carbides were observed in the ceramic composition. The strength of the resulting ceramics at room temperature was 394 ± 72 MPa, at a temperature of 1600°С, it was 119 ± 31 MPa. For pure carbides, a significant drop in hardness was observed at an increased load on the indenter, while for (TiZrHfNbTa)C, hardness is retained under any load. To achieve the maximum hardness and strength of high-entropy ceramics (TiZrHfNbTa)C, the amount of ZrO
2
and HfO
2
in the composition of ceramics should be decreased with a simultaneous decrease in grain size by using submicrometer-scale powders and selecting proper technological modes of production.</abstract><cop>Moscow</cop><pub>Pleiades Publishing</pub><doi>10.3103/S1063457622050094</doi><tpages>8</tpages></addata></record> |
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| issn | 1063-4576 1934-9408 |
| language | eng |
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| subjects | Carbides Ceramics Chemistry Chemistry and Materials Science Composition Entropy Grain size Hafnium oxide Hardness Hot pressing Mechanical properties Physical Chemistry Production Properties Room temperature Structure Zirconium dioxide Zirconium oxides |
| title | Preparation and Mechanical Properties of High-Entropy Ceramics (TiZrHfNbTa)C |
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