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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 8, Number 2
April 20, 1964 

Study on the Spheroidizing Mechanism of Graphite in Cast Iron (Ⅱ)

주철에 있어서의 흑연구상화 기구에 관한 연구 (Ⅱ)
Hyung Sup Choi, Won Koo Park

최형섭, 박원구
It was verified at Part Ⅰ of this investigation that there is a minimum wettability between molten iron and graphite, which was preliminarily coated with magnesium, and thus the spheroidization of graphite might have resulted from the lack of wettability between magnesium-adsorbed graphite and iron matrix. Being continued from the last work, the wettability between pure iron and graphite, coated with the various thickness of cerium, are measured at melting point of pure iron in vacuum and 200 mmHg argon gas atmosphere. The result indicates the presence of a minimum wettability at a critical thickness of cerium film as was proved in the case of magnesium. The experimental analysis shows that, the minimum wettability could be attributed entirely to a minimum work of adhesion between liquid iron and graphite at a critical concentration of cerium in the iron-graphite interface.
57 - 61
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