Because in the second report, we understood that Mo was mast suitablepromoter for Zn-Cr-alkali system, we investigated in this report the effects of an additional quantity of Mo and K
2CO
3, and the effects of various kinds of alkali salts, as the results, we found the facts as follows;
(1) A suitable quantity of addition of Mo and K
2CO
3 are respeetively 3%and 20%for the total weight of Zn and Cr.
when an additional quantity of K2
CO
3 in too much, it dosn't almost form the liquid.
(2) As alkali additional agents, K
2CO
3 is most suitable in various K-solts and use of Na
2CO
3 form much water.
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