Reliable data for high-temperature viscosity and surface tension: results from a European project
2001 (English)In: High Temperatures-High Pressures, ISSN 0018-1544, E-ISSN 1472-3441, Vol. 33, no 6, 631-637 p.Article in journal (Refereed) Published
Results are reported of work carried out for the European Commission under contract number MAT1 CT 940006, between 1994 and 1998. The project provided recommended surface tension - temperature relationships for copper and nickel samples prepared by cold crucible melting to +/-3%, by the levitation and sessile drop methods, and values were also obtained for iron and gold in preliminary studies. For copper, (gamma /N m(-1)) = 1.304 - 0.289 x 10(-3)[(theta - 1083)/degreesC]; for nickel, (gamma /N m(-1)) = 1.781 - 0.285 x 10(-3)[(theta - 1455)/degreesC]. Comparison of terrestrial measurements with those made in microgravity have shown that the Cumming's equation is a reliable and satisfactory method of correcting the surface tensions derived with the levitated drop method for the effect of electromagnetic pressure. For measurements with an oscillating cylinder viscometer, recommended viscosity-temperature relationships are given for copper, nickel, and iron. For copper, log(10)(eta /mPa s) = -0.2791 + [1245.5/(T/K)]; for nickel, log(10)(q/mPa s) = -0.5038 + [2029/(T/K)]; and for iron, log(10)(eta /mPa s) = -0.6494 + [2568/(T/K)].
Place, publisher, year, edition, pages
2001. Vol. 33, no 6, 631-637 p.
IdentifiersURN: urn:nbn:se:kth:diva-21180ISI: 000172756900001OAI: oai:DiVA.org:kth-21180DiVA: diva2:339877
QC 201005252010-08-102010-08-10Bibliographically approved