Melting temperature of diamond and cubic boron nitride at 15 gigapascals
The melting temperature of diamond has not yet been experimentally measured under static pressure and these data for cubic boron nitride (cBN) are scarce. This lack of information is understandable due to the difficulty of heating optically transparent diamond via absorption of intense laser radiati...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2019-11-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.1.033090 |
| _version_ | 1797211672117510144 |
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| author | Akun Liang Yinjuan Liu Lanting Shi Li Lei Feng Zhang Qiwei Hu Duanwei He |
| author_facet | Akun Liang Yinjuan Liu Lanting Shi Li Lei Feng Zhang Qiwei Hu Duanwei He |
| author_sort | Akun Liang |
| collection | DOAJ |
| description | The melting temperature of diamond has not yet been experimentally measured under static pressure and these data for cubic boron nitride (cBN) are scarce. This lack of information is understandable due to the difficulty of heating optically transparent diamond via absorption of intense laser radiation in a diamond anvil cell and obtaining a high temperature with traditional resistance heating methods in a large-volume, multiple-anvil apparatus. Here, we report the melting temperature of diamond (5968±457 K) and cBN (5689±411 K) at a pressure of 15 GPa based on a two-stage multiple-anvil apparatus coupled with a so-called flash-heating method and show that the previous theoretical predictions underestimate the melting points of these two superhard materials. Our results indicate that diamond has the highest melting point in nature, and strengthen our understanding of the melting behavior of those two superhard materials. |
| first_indexed | 2024-04-24T10:30:12Z |
| format | Article |
| id | doaj.art-66b7d09c088846ef9b0d6b067add7dfc |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:30:12Z |
| publishDate | 2019-11-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-66b7d09c088846ef9b0d6b067add7dfc2024-04-12T16:46:48ZengAmerican Physical SocietyPhysical Review Research2643-15642019-11-011303309010.1103/PhysRevResearch.1.033090Melting temperature of diamond and cubic boron nitride at 15 gigapascalsAkun LiangYinjuan LiuLanting ShiLi LeiFeng ZhangQiwei HuDuanwei HeThe melting temperature of diamond has not yet been experimentally measured under static pressure and these data for cubic boron nitride (cBN) are scarce. This lack of information is understandable due to the difficulty of heating optically transparent diamond via absorption of intense laser radiation in a diamond anvil cell and obtaining a high temperature with traditional resistance heating methods in a large-volume, multiple-anvil apparatus. Here, we report the melting temperature of diamond (5968±457 K) and cBN (5689±411 K) at a pressure of 15 GPa based on a two-stage multiple-anvil apparatus coupled with a so-called flash-heating method and show that the previous theoretical predictions underestimate the melting points of these two superhard materials. Our results indicate that diamond has the highest melting point in nature, and strengthen our understanding of the melting behavior of those two superhard materials.http://doi.org/10.1103/PhysRevResearch.1.033090 |
| spellingShingle | Akun Liang Yinjuan Liu Lanting Shi Li Lei Feng Zhang Qiwei Hu Duanwei He Melting temperature of diamond and cubic boron nitride at 15 gigapascals Physical Review Research |
| title | Melting temperature of diamond and cubic boron nitride at 15 gigapascals |
| title_full | Melting temperature of diamond and cubic boron nitride at 15 gigapascals |
| title_fullStr | Melting temperature of diamond and cubic boron nitride at 15 gigapascals |
| title_full_unstemmed | Melting temperature of diamond and cubic boron nitride at 15 gigapascals |
| title_short | Melting temperature of diamond and cubic boron nitride at 15 gigapascals |
| title_sort | melting temperature of diamond and cubic boron nitride at 15 gigapascals |
| url | http://doi.org/10.1103/PhysRevResearch.1.033090 |
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