<正>In Nb-Si based alloys with a two-phase Nbss/ intermetallic Nb5Si3 structure, the Nb5Si3 provides high-temperature strength, while the Nb solid-solution phas
CO2 laser quick assembly technology is adopted on the surface of cast aluminum ZL104 to form a dense ceramic coating containing a great deal of nanometer Al2O3/
In order to remove hydrogen and inclusions from A356 alloy melt,a low melting-point glass flux,JDN-Ⅱ,was developed.The results indicated that JDN-Ⅱ flux has d