To obtain novel intermediate temperature alloy solders with a melting temperature of 400-600C, nominal (Ag-Cu2s)-30Sn alloys without or with a trace addition (0
W-type barium ferrites doped with Gd3+, Ba1-xGdx(Zn0.3Co0.7)2Fe16O27 (x = 0, 0.05, 0.10, 0.15, 0.20), were prepared by a sol-gel method. The effects of Gd3+ sub
A termetallic catalyst of Pt-Ir-Au/Al2O3 for NOx decomposition was prepared by loading the metallic colloids in C2H5OH-H2O solution and a surfactant of polyviny