This paper shall present a survey on a vacuum or space related effect, which is referred to as "cold welding", "adhesion" or "sticking". It refers to "welding or sticking" of contacting bodies which shall open vertically (no sliding), i.e. acc. to ECSS "separable contact surfaces". Starting from a reported failure on a spacecraft, test facilities were developed and a verification study was done to show relevance between the test results and the reported failure. In the following, a standardised test method was set-up, in order to compare different space relevant materials and coatings for their tendency to cold welding. Within several studies, common experience and numerical results were gained on space relevant combinations of materials and coatings. Based on this knowledge, recommendations for use of certain combinations will be drawn. As example, stainless steel SS17-7ph will have to be avoided or several finishes on Al AA7075 can be recommended (e.g. hard anodising).
Cold welding due to impact and fretting under high vacuum
2003
8 Seiten, 13 Quellen
Aufsatz (Konferenz)
Englisch
Cold Welding and Fretting Tests on Quasicrystals Coatings under Vacuum
British Library Conference Proceedings | 2006
|Cold Welding due to Fretting under High Vacuum, Helium and in Air
British Library Online Contents | 1997
|Cold Welding due to Fretting under High Vacuum, Helium and in Air
British Library Conference Proceedings | 1997
|Influence of coatings and alloying on cold welding due to impact and fretting
Tema Archiv | 2003
|