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As well known, cubic boron nitride display more integrated morphology and larger crystal sizes with the color burn. In this paper, black cBN crystals were synthesized in the systems of Mg+hBN, LiH+hBN, Li3N+hBN+B and B+Li3N, respectively. Optical microscope (OM), X-ray diffraction and Raman spectroscopy were used to make a comparison with different black cBN crystals on the aspect of the synthetic condition, crystal morphology, grain size and residual stress. The results showed that the synthesized cBN with the different system exhibited obvious difference. In order to optimize the cBN synthesis, the appropriate system should be chosen according to diverse demands in practical applications.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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