【材料课件】金属和合金的凝固组织的观察和分析

1.2.3.‘’‘’1.2.3.•••••1.2./mm/°C/°C11068021050068031078041068053680•----/1a25%Ni+75%Cu/2a70%Pb+30%Snb38.1%Pb+61.9%Snc)20%Pb+80%Sn3a80%Sn+20%Sbb)35%Sn+65%Sb4a)51%Bi+32%Pb+17%Snb58%Bi+16%Pb+26%Snc65%Bi+10%Pb+25%Sn2.1.2.Φ50mm4Cu-Ni2Pb-Sn3Sn-Sb122./mm/°C/°C11068021050068031078041068053680•----/4123525%Ni+75%Cu/20%25%Ni+75%Cu••Pb-Sn4%38.1%Pb+61.9%Sn••••α,β?20%Pb+80%Sn70%Pb+30%SnSn-SbHNO3HCl=1180%Sn+20%Sb35%Sn+65%SbBi-Sn-PbI.51%Bi+32%Pb+17%SnII.58%Bi+16%Pb+26%SnIII.65%Bi+10%Pb+25%SnIIIIIIIIIIII.65%Bi+10%Pb+25%SnIIII.58%Bi+16%Pb+26%SnII.51%Bi+32%Pb+17%SnI:IV680CIII780CAl-GeAl-GeAl-35%Ge94.25%Al;5.75%Ge;Average:77.75%Al;22.25%GeAl-GeAnothercase:Al-65%GeAverage:53.28%Al;46.72%Ge;1.60%Al;98.40%Ge;