-
摘要: 通过B2O3与Mg和Li3N分别在不同温度压力条件下的反应，用X射线方法研究了生成物的物相。当采用Mg与B2O3为原料时，其产物是Mg3B2O6；用Li3N与B2O3反应时，产物中除了Li3BO3，还有立方氮化硼（cBN）生成。这表明，当原料中含有相同数量B2O3时，用Mg和Li3N分别作触媒合成立方氮化硼，将得到不同的结果。Abstract: The reaction of Li3N-B2O3 and Mg-B2O3 under different pressure and temperature has been studied and the phase of the resultant has been analyzed by X-ray diffraction (XRD) method. XRD results show that when the starting material is Mg-B2O3, the major production is Mg3B2O6; When the starting material is Li3N-B2O3, cBN appears in the production. These results indicate that if the content of B2O3 is the same in the starting material, we will get different results, in the case of using Mg and Li3N as the catalyst respectively.
-
Key words:
- catalyst /
- B2O3 /
- cubic boron nitride
-
Wentorf R H. Sythesis of the Cubic Form of Boron Nitride [J]. J Chem phys, 1961, 34: 809. Mishima O, Tanaka J, Yamaoka S, et al. High-Temperature Cubic Boron Nitride P-N Junction Diode Made at High Pressure [J]. Science, 1987, 238: 181-183. Tomikawa T, Nishibayashi Y, Shikata S. P-N Junction Diode by B-Doped Diamond Heteroepitaxially Grown on Si-Doped c-BN [J]. Diamond and Relat Mater, 1994, 3: 1398. Zhang T Ch, Wang Ch X, Gao Ch X. Cubic Boron Nitride Crystal-Diamond Film Heterojunction P-N Diode [J]. Chinese Journal of High Pressure Physics, 1999, 13(3): 169. (in Chinese) 张铁臣, 王成新, 高春晓. 立方氮化硼单晶-金刚石膜异质P-N结 [J]. 高压物理学报, 1999, 13(3): 169. Bello I, Chong Y M, Leung K M, et al. Cubic Boron Nitride Films for Industrial Applications [J]. Diamond Relat Mater, 2005, 14: 1784-1790. Sato T, Hiraok H, Endo T. Effect of Oxygen on the Growth of Cubic Boron Nitride Using Mg3N2 as Catalyst [J]. J Materials Sci, 1981, 16: 2227. Singal S K, Park J K. Synthesis of Cubic Boron Nitride from Amorphous Boron Nitride Containing Oxide Impurity Using Mg-Al Alloy Catalyst Solvent [J]. J Crystal Growth, 2004, 260: 217-557. -
点击查看大图
计量
- 文章访问数: 8420
- HTML全文浏览量: 703
- PDF下载量: 858
下载:
