Influencing factors for diamond formation from several starting carbons

The possible influencing factors for diamond formation which prevent non-graphitic carbons from transforming to diamond in the presence of nickel as solvent-catalyst were pursued. The relative amount of nickel to carbon did not affect the behaviour of each starting carbon on diamond formation. The e...

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Bibliographic Details
Published in:Journal of materials science 1985-06, Vol.20 (6), p.2260-2264
Main Authors: TSUZUKI, A, HIRANO, S.-I, NAKA, S
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Chemical industry and chemicals
Exact sciences and technology
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Summary:The possible influencing factors for diamond formation which prevent non-graphitic carbons from transforming to diamond in the presence of nickel as solvent-catalyst were pursued. The relative amount of nickel to carbon did not affect the behaviour of each starting carbon on diamond formation. The existence of a graphitic structure in the starting carbon was not the major prerequisite for diamond formation. Adsorbed gases on the starting carbon and atmospheric gases in the high pressure cell were the most important influencing factors. Hydrogen and chemical species containing hydrogen atoms were the most harmful. 5pp 2fig 2tab
ISSN:0022-2461
1573-4803
DOI:10.1007/bf01112312