Objective The objective of this project is to provide accurate surface tension and viscosity data for calibrants for use at high temperatures.The analytical techniques used to process the oscillation spectra obtained from levitated drops have been significantly improved. Surface tension values obtained in this way have been shown to be (i) independent of the drop mass, (ii) in agreement with recommended values and (iii) in agreement with values calculated from single-peak spectra obtained in microgravity experiments on Au and (36% Ni + 64% Zr). Surface tension values are reported for liquid Ni, Au, Cu and Pt. An oscillating viscometer has been designed, constructed and commissioned. The performance of the viscometer has been checked using mercury and zinc and the resulting values were within 1% of recommended values. Viscosities have also been obtained for liquid A1 and Cu. Microgravity experiments have been carried out to determine the feasibility of deriving viscosities from the damping of the oscillations of a levitated gold drop. The results indicate that the damping forces are larger than the calculated viscous forces. Fields of science natural scienceschemical sciencesinorganic chemistrytransition metals Programme(s) FP3-MAT - Specific research and technological development programme (EEC) in the field of measurements and testing, 1990-1994 Topic(s) Data not available Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator National Physical Laboratory (NPL) Address Queen's road TW11 0LW Teddington United Kingdom See on map EU contribution € 0,00 Participants (2) Sort alphabetically Sort by EU Contribution Expand all Collapse all GERMAN AEROSPACE CENTRE Germany EU contribution € 0,00 Address Linder höhe 51147 Koeln See on map Links Website Opens in new window ROYAL INSTITUTE OF TECHNOLOGY Sweden EU contribution € 0,00 Address 79,valhallavaegen 79 10044 Stockholm See on map
