boric acid; ammonium formate; hydrogen in water Electrolysis; electrodeposition from aq. bath containing CrCl3*6H2O, CoCl2*6H2O, H3BO3, HCOONH4 and Gly at 25°C in Al2O3 membrane; adjusting pH 6 by addn. of NH4OH; using Ag/AgCl as ref. electrode; annealing at 550-800°C for 40 min in H2 atm.; quenching; extn. by dissolving in aq. soln. of chromic acid and phosphoric acid in ratio 1:2; monitoring by XRD;
参考文献
Journal of Magnetism and Magnetic Materials, , vol. 303, # 1 p. 232 - 236
chromium iron ore reduced with Al in presence of 0.1-20 percent of Cu and 2 percent of Mg; molten metal has great fluidity and small surface tension because of Mg and Cu so sepn. between metal and slag simple;
参考文献
Gmelin Handbook: Cr: MVol.A1, 5.1.1, page 213 - 217
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Favre, G. A.; Rabbinovitch, J.
Patent: FR819178 , 1937 ;
C., 1938 , vol. I, p. 3533
