Mechanical properties of cubic boron nitride and diamond at dynamical pressure and temperature
We report the mechanical properties of cubic boron nitride (c-BN) and diamond under the combined impact of dynamical pressure and temperature, calculated using ab initio molecular dynamics. Our study revealed a pronounced sensitivity of the mechanical properties of c-BN to applied pressure. Notably,...
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| Veröffentlicht in: | Applied physics letters 2023-12, Vol.123 (23) |
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| container_title | Applied physics letters |
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| creator | Kastuar, Srihari M. Liu, Zhong-Li Najmaei, Sina Ekuma, Chinedu E. |
| description | We report the mechanical properties of cubic boron nitride (c-BN) and diamond under the combined impact of dynamical pressure and temperature, calculated using ab initio molecular dynamics. Our study revealed a pronounced sensitivity of the mechanical properties of c-BN to applied pressure. Notably, c-BN undergoes a brittle-to-ductile transition at ∼220 GPa, consistent across various dynamical temperatures, while diamond exhibits no such transition. Furthermore, the Vickers hardness profile for c-BN closely mirrors that of diamond across a spectrum of temperature–pressure conditions, highlighting c-BN's significant mechanical robustness. These results underscore the superior resilience and adaptability of c-BN compared to diamond, suggesting its potential as an ideal candidate for applications in extreme environments. |
| doi_str_mv | 10.1063/5.0172885 |
| format | Article |
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These results underscore the superior resilience and adaptability of c-BN compared to diamond, suggesting its potential as an ideal candidate for applications in extreme environments.</description><subject>Applied physics</subject><subject>Boron nitride</subject><subject>Cubic boron nitride</subject><subject>Diamond pyramid hardness</subject><subject>Diamonds</subject><subject>Ductile-brittle transition</subject><subject>Extreme environments</subject><subject>Mechanical properties</subject><subject>Molecular dynamics</subject><issn>0003-6951</issn><issn>1077-3118</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNp9kE9LxDAUxIMouK4e_AYBTwpdk6ZpXo-y-A9WvOjV8pqkmGXbrEl62G9vpHv2NAz8Zh5vCLnmbMVZLe7linFVAsgTsuBMqUJwDqdkwRgTRd1Ifk4uYtxmK0shFuTrzepvHJ3GHd0Hv7chORup76meOqdp54Mf6ehScMZSHA01DgefFRM1hxGHY9TGOIWZSHbIPZiyvyRnPe6ivTrqknw-PX6sX4rN-_Pr-mFT6BJUKjquKuQaDSgFvWB9VwGgAOjLytYNWFWLTmturGikFFhx1igNlZYg0OhOLMnN3Jt_-JlsTO3WT2HMJ9sSGsUBlBCZup0pHXyMwfbtPrgBw6HlrP2br5Xtcb7M3s1s1C5hcn78B_4F13pv2g</recordid><startdate>20231204</startdate><enddate>20231204</enddate><creator>Kastuar, Srihari M.</creator><creator>Liu, Zhong-Li</creator><creator>Najmaei, Sina</creator><creator>Ekuma, Chinedu E.</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-3234-310X</orcidid><orcidid>https://orcid.org/0000-0001-8535-1990</orcidid><orcidid>https://orcid.org/0000-0002-7900-1561</orcidid><orcidid>https://orcid.org/0000-0002-5852-7556</orcidid></search><sort><creationdate>20231204</creationdate><title>Mechanical properties of cubic boron nitride and diamond at dynamical pressure and temperature</title><author>Kastuar, Srihari M. ; Liu, Zhong-Li ; Najmaei, Sina ; Ekuma, Chinedu E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c287t-b174a1cad8778f30fb488a388f24e698e763bcc1de39553a41097c84c583adcb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Applied physics</topic><topic>Boron nitride</topic><topic>Cubic boron nitride</topic><topic>Diamond pyramid hardness</topic><topic>Diamonds</topic><topic>Ductile-brittle transition</topic><topic>Extreme environments</topic><topic>Mechanical properties</topic><topic>Molecular dynamics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kastuar, Srihari M.</creatorcontrib><creatorcontrib>Liu, Zhong-Li</creatorcontrib><creatorcontrib>Najmaei, Sina</creatorcontrib><creatorcontrib>Ekuma, Chinedu E.</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Applied physics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kastuar, Srihari M.</au><au>Liu, Zhong-Li</au><au>Najmaei, Sina</au><au>Ekuma, Chinedu E.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mechanical properties of cubic boron nitride and diamond at dynamical pressure and temperature</atitle><jtitle>Applied physics letters</jtitle><date>2023-12-04</date><risdate>2023</risdate><volume>123</volume><issue>23</issue><issn>0003-6951</issn><eissn>1077-3118</eissn><coden>APPLAB</coden><abstract>We report the mechanical properties of cubic boron nitride (c-BN) and diamond under the combined impact of dynamical pressure and temperature, calculated using ab initio molecular dynamics. Our study revealed a pronounced sensitivity of the mechanical properties of c-BN to applied pressure. Notably, c-BN undergoes a brittle-to-ductile transition at ∼220 GPa, consistent across various dynamical temperatures, while diamond exhibits no such transition. Furthermore, the Vickers hardness profile for c-BN closely mirrors that of diamond across a spectrum of temperature–pressure conditions, highlighting c-BN's significant mechanical robustness. 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| language | eng |
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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Applied physics Boron nitride Cubic boron nitride Diamond pyramid hardness Diamonds Ductile-brittle transition Extreme environments Mechanical properties Molecular dynamics |
| title | Mechanical properties of cubic boron nitride and diamond at dynamical pressure and temperature |
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