ag 99

Ag–Sb and Ag–Cu–Sb alloys were prepared with pure Ag shots (99.9 wt%, Alfa Aeser), Cu shots (99.999 wt%, Alfa Aesar) and Sb shots (99.9 wt%, SHOWA). Proper amounts of constituent elements were weighed and encapsulated in a quartz tube in 10 −5 atm. vacuum. The quartz sample capsule was heated to 980 °C for 1 h, cooled, kept at 650 °C ... 99 5 km luas 8 huruf kecil