Growth Mechanisms of Graphite Spherulites in the Nodular Cast Iron and the High-pressure-treated Ni-C alloy

Park, Jong-Ku; 박종구; Ahn, Jae-Pyoung; 안재평; Kim, Gyeungho; 김긍호; Kim, Soo-Chul; 김수철

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P-ISSN1225-0163
E-ISSN2288-8985
SCOPUS, ESCI, KCI

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P-ISSN 1225-0163
E-ISSN 2288-8985

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Vol.13, No.2

PubReader Citation

Growth Mechanisms of Graphite Spherulites in the Nodular Cast Iron and the High-pressure-treated Ni-C alloy

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985

2000, v.13 no.2, pp.200-207

Park, Jong-Ku
Ahn, Jae-Pyoung
Kim, Gyeungho
Kim, Soo-Chul

Park, J., Ahn, J., Kim, G., & Kim, S. (2000). Growth Mechanisms of Graphite Spherulites in the Nodular Cast Iron and the High-pressure-treated Ni-C alloy. , 13(2), 200-207.

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Abstract

The growth mechanisms of graphite spherulite both in the nodular cast iron and the high pressuretreated Ni-C alloy were investigated by SEM, HRTEM and EELS. The internal microstructure and lattice image of graphite spherulite extracted from Ni-C alloy were compared with those of graphite spherulite extracted from the nodular cast iron. The ratios of $sp^2$ and $sp^3$ bonding in the respective graphite spherulite measured by EELS, are compared each other. The graphite spherulite of Ni-C alloy had little internal defects and much $sp^3$ carbon species compared to that of the nodular cast iron. Present difference in microstructural features and bonding characters indicated that the graphite spheruites in the high pressuretreated Ni-C alloy grew by different mechanism compared with those in the nodular cast iron.