Effects of Purification Fluxes Containing Boride on AZ91 Alloy
Purification fluxes JDMR-1 containing B2O3 and JDMR-2 containing Na2B4O7 were developed for magnesium alloy. Density, viscosity and melting points of the two fluxes were measured. In the magnesium alloy iron concentration decreased from 0.024% to 0.004% and 0.001%, and average volume fraction of nonmetallic inclusions from 2.06% to 0.86% and 0.23% after JDMR-1 and JDMR-2 processing, respectively. Corrosion resistance and tensile properties of the magnesium alloy were greatly improved. Iron reduction mechanism was studied thermodynamically.
W.Ke, E.H.Han, Y.F.Han, K.Kainer and A.A.Luo
H. T. Gao et al., "Effects of Purification Fluxes Containing Boride on AZ91 Alloy", Materials Science Forum, Vols. 488-489, pp. 25-30, 2005