A Zr-rich phase,Ni<sub>5</sub>Zr,with low melting point has been fouhd in an Ni<sub>3</sub>Al alloy doped withZr(1.2at.-%).It will cause the incipient melt of the
The effects of Y,Ce and La on the sulfidation of alloy Fe-25Cr-40Ni have been investigated.The sulfidation rate of the alloys with RE more than 0.1 wt-% is lowe
The anode reaction and current density of the electrowinning of Sb from jamesonite concen-trate have been investigate.High anodic current density seems to be th