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The Coloration Process Study on the Synthesis of cBN by hBN-LiH/hBN-Li3N-B System
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Xiao-Rui JI1, Da-Peng YANG2, Xiao-Hong YANG1, Tie-Chen ZHANG3
Chinese Journal of High Pressure Physics | 2010, 24(3) : 231 - 236
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Chinese Journal of High Pressure Physics | 2010, 24(3): 231-236
The Coloration Process Study on the Synthesis of cBN by hBN-LiH/hBN-Li3N-B System
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Xiao-Rui JI1, Da-Peng YANG2, Xiao-Hong YANG1, Tie-Chen ZHANG3
Affiliations
  • 1.Department of Preparatory Course, Shenyang Institute of Engineering, Shenyang 110136, China
  • 2.College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130026, China
  • 3.National Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
Published: 2010-06-15
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Using hBN-LiH or hBN-Li3N-B as starting materials, we synthesied black cBN crystals under high pressure and high temperature. The results of Raman spectrum show that the reason why cBN crystals become black is that the redundant B atoms get into them. The cBN crystal is synthesized in hBN-Li3N-B system, and then we observe a trigonal shadow is formed clearly. This phenomenon indicates that there are more B atoms from center to apex in cBN crystal, and the B atoms content gradually decrease from center to edge. However, the color of cBN crystal which is synthesized in hBN-LiH system was from transparent black to opaque black directly, and the trigonal shadow does not be formed. This phenomenon indicates that the B atoms as impurity diffuse equably in cBN crystals. The two circumstances illustrate that as an impurity atom, B has two kinds of distributions when it enter into cBN crystal: one is centeral symmetric distribution, the other is uniform distribution. In this paper, we analyze the reason why cBN crystals have different phenomenon above according to its growth environment and its ability of excluding impurity.

high pressure and high temperature  /  cBN  /  coloration process
吉晓瑞, 杨大鹏, 杨晓红, 张铁臣. hBN-LiH/hBN-Li3N-B体系合成cBN的赋色过程研究. 高压物理学报, 2010 , 24 (3) : 231 -236 .
Xiao-Rui JI, Da-Peng YANG, Xiao-Hong YANG, Tie-Chen ZHANG. The Coloration Process Study on the Synthesis of cBN by hBN-LiH/hBN-Li3N-B System[J]. Chinese Journal of High Pressure Physics, 2010 , 24 (3) : 231 -236 .
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Year 2010 volume 24 Issue 3
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Article Info
  • Receive Date：2009-05-11
  • Online Date：2026-10-30
  • Published：2010-06-15
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History
  • Received：2009-05-11
  • Revised：2009-12-25
Funding
Affiliations
    1.Department of Preparatory Course, Shenyang Institute of Engineering, Shenyang 110136, China
    2.College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130026, China
    3.National Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
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表12种不同金属材料的力学参数
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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