Strontium was introduced into CeO2-ZrO2 mixed oxides (CZ) by doping and impregnation methods,and then Pt was impregnated on the Sr-modified CZ to obtain the cat
In-situ ZrB2/AZ91D magnesium matrix composite was successfully synthesized with Al/K2ZrF6+NH4BF4 by means of Direct Melt Reaction.The fabricated ZrB2/AZ91D magn
A navel electron beam welder (EBW) power supply was developed.Compared with the traditional 3-phase control 12-pulse rectifying supplies,it requires a much lowe