| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1331810 | Journal of Solid State Chemistry | 2009 | 5 Pages |
Phase transformation among different boron nitride (BN) phases in hydrothermal solution was investigated. It was found that hexagonal boron nitride (hBN) firstly formed in the solution at relatively low temperature (i.e., 220 °C). After that, a spot of hBN began to transform into wurtzite boron nitride (wBN) and cubic boron nitride (cBN) at 230 °C. More and more hBN converted into wBN and cBN with the increase in temperature, and this transformation process completed at 300 °C. In this paper, we have explained the mechanism of the above phase transformation by using a reported “puckering mechanism”.
Graphical abstractPhase transformations from hBN to wBN and cBN happened with the temperature increasing from 230 to 300 °C under hypothermal conditions, and nearly pure cBN has been synthesized at 300 °C and 12 MPa.Figure optionsDownload full-size imageDownload as PowerPoint slide
