Abstract: | A droplet flowing over onto a plate introduced from above has been used to study the kinetics of spreading and to describe
the observable characteristics of spreading of tin on iron, cobalt, nickel, and the intermetallic compounds Ni3Sn, Ni3Sn2 under a vacuum of (2–4)·10−3 Pa at 400–1000°C, droplet mass 0.01–0.06 g. We show by a formal kinetic analysis of experimental data that in the low-temperature
range (400–500°C) the kinetic regime dominates, and in the high-temperature range (600–1000°C) the inertial—kinetic regime
dominates. In spreading of tin on iron, cobalt, nickel, and the intermetallic compounds Ni3Sn and Ni3Sn2, the nature of the interaction corresponds to the phase equilibrium in the studied systems. The results for the kinetics
of spreading of tin on nickel and the intermetallic compound Ni3Sn showed that spreading of the main bulk is preceded by spreading of a precursor film.
Deceased.
Institute for Problems of Materials Science, Ukraine National Academy of Sciences, Kiev. Translated from Poroshkovaya Metallurgiya,
Nos. 7–8(402), pp. 65–72, July–August, 1998. |