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Solubility of calcium in Fe‐Ca‐ X i melts
Author(s) -
Köhler Michael,
Engell HansJürgen,
Janke Dieter
Publication year - 1985
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.198500659
Subject(s) - solubility , chemistry , chromium , manganese , nickel , calcium , metallurgy , nuclear chemistry , materials science , organic chemistry
The equilibrium experiments on liquid Fe‐Ca‐ X i were carried out in a high pressure induction furnace in dense CaO crucibles. The solubility of calcium, saturated with CaO, in iron was determined as a function of temperature under 10 bar argon pressure. In pure iron the maximum solubility of calcium at 1 600°C is 0.03 wt.%. The alloying elements silicon, aluminium and nickel remarkably increase the calcium solubility in iron, whereas manganese causes an almost negligible increase. Chromium significantly reduces calcium solubility. The opposite influence of chromium and nickel on calcium solubility is balanced in an 18/8 steel. The interaction parameters of the alloying elements in the solvent iron with respect to Raoultian standard state are as follows: