THE NUCLEATION AND GROWTH OF GRAPHITE - THE MODIFICATION OF CAST-IRON

被引:78
作者
DOUBLE, DD [1 ]
HELLAWELL, A [1 ]
机构
[1] ALCAN INT LTD, BANBURY, OXON, ENGLAND
来源
ACTA METALLURGICA ET MATERIALIA | 1995年 / 43卷 / 06期
关键词
D O I
10.1016/0956-7151(94)00416-1
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
It is considered that all forms of graphite, precipitating from a metallic solution, must evolve from a basic hexagonal ring structure, growing into an open monolayer sheet. Subsequent growth of this precursor can lead to multi-layer sheets-flake graphite, to rolled or wrapped concentric shells-spheroidal graphite, or, possibly, to saturated fullerene units. The molecular attachment kinetics which might favor these alternatives are briefly discussed and compared with experimental evidence. Spheroidal graphite is the preferred morphology in a dean melt, flake graphite is an impurity modified form and growth to form fullerenes is presently unpredictable, but is considered to be improbable.
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页码:2435 / 2442
页数:8
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