TITLE:
Study on the Mechanism of Heterogeneous Catalysis (3) —The Catalysis of W, Mo, S and SiO2 on Carbon Dissolving and Mechanism of Carbon Dissolving in the Iron-Graphite Compact
AUTHORS:
Jiamin Jin, Tou Hong, Juqing Wu
KEYWORDS:
Heterogeneous Catalysis, Powder Metallurgy, Sintering
JOURNAL NAME:
Journal of Materials Science and Chemical Engineering,
Vol.5 No.11,
November
30,
2017
ABSTRACT: This is an article that validates Electron Cyclic Donate-Accept Catalysis Mechanism-ECDAM or Electron Orbital Deformation-Recovery Cycle Catalysis Mechanism-EODRM. In this paper, the influence of compact density, sintering temperature and time, vacuum degree, atmosphere and alloying element on the carbon dissolving rate into γ-Fe were studied. The experiment results have been reported. The way that the carbon is dissolved into γ-Fe was discussed. Gas phase composition and temperature play an important role on the carbon dissolving rate. The carbon gasification reaction is the determining step of dissolving carbon process. K2CO3, W and Mo are a catalysts, and their active size are K2CO3 > W > Mo. S and SiO2 are a poison, and their poison size are SiO2 > S. The experiment results are completely consistent with the original judgment of ECDAM.