Sweat cooling alloy
Sweat cooling alloys are metallic materials that are cooled by partial evaporation . Since the material is partially sacrificed, the service life is limited. These alloys can be used, for example, in rocket nozzles with a correspondingly short burn time.
A sweat cooling alloy can be implemented by impregnating . One example is a tungsten - silver - composite material obtained by impregnating sintered arises tungsten powder with liquid silver. During the burning time at temperatures of around 4000 ° C, the silver melts. Part of it evaporates and thereby cools the nozzle.
Individual evidence
- ↑ Alex Troost: Introduction to general materials science of metallic materials I . Bibliographical Institute, Mannheim / Vienna / Zurich 1980, ISBN 3-411-01573-X .