X-ray tomographic study of spatial distribution of microinclusions in natural fibrous diamonds

被引:3
作者
Kovalenko, E. S. [2 ]
Shiryaev, A. A. [1 ]
Kaloyan, A. A. [2 ]
Podurets, K. M. [2 ]
机构
[1] RAS, Inst Phys Chem & Electrochem, Moscow 119071, Russia
[2] IV Kurchatov Atom Energy Inst, Natl Res Ctr, Moscow 123182, Russia
关键词
Natural diamond; High pressure crystal growth; Microstructure; CARBONATE-FLUID SYSTEMS; P-T CONDITIONS; CRYSTALLIZATION; INCLUSIONS;
D O I
10.1016/j.diamond.2012.09.006
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
X-ray tomography was used to investigate spatial distribution of micron-sized inclusions in whole natural fibrous diamonds. It is shown that in the studied samples the inclusions are almost entirely arranged along intersector boundaries, leaving individual growth sectors virtually empty despite their pronounced fibrous structure. Comparison with previous results we suggest that at least three modes of spatial arrangements of microinclusions could be present, reflecting variations in the chemical and physical properties of the growth medium. We report the existence of large, reaching several tens of microns heterogeneous inclusions. lit most cases the inclusions consist of a core surrounded by a less dense material. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:37 / 41
页数:5
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