Zobrazeno 1 - 10
of 247
pro vyhledávání: '"Martin G. Frohberg"'
Publikováno v:
Materials Science and Engineering: A. 308:60-64
The molar enthalpy, ΔH, of hafnium (3 wt.% Zr) has been measured by levitation drop calorimetry for the solid β-phase in a temperature range from T=2096 to 2455 K and for the liquid phase from T=2339 to 2988 K. The temperatures of the α to β and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c68beaf8e82f1c4485c911b5deff27fe
https://doi.org/10.1016/s0921-5093(00)02044-x
https://doi.org/10.1016/s0921-5093(00)02044-x
Publikováno v:
Surface Science. 443:159-164
The oscillating drop technique has been applied to investigate the influence of oxygen on the surface tension of zirconium. During electromagnetic levitation the surface oscillations of liquid drops were recorded by CCD-imaging with a digital camera.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bfe5a8638b9a35d2407068b2e52052b2
https://doi.org/10.1016/s0039-6028(99)01038-9
https://doi.org/10.1016/s0039-6028(99)01038-9
Autor:
Martin G. Frohberg
Publikováno v:
Thermochimica Acta. 337:7-17
Investigations on liquid high melting metals are frequently tainted with side reactions with the crucible material. Levitation techniques enable the containerless investigation of thermophysical properties over a wide temperature range. An overview i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f33d787fc20dd43615f3232e7f3df2de
https://doi.org/10.1016/s0040-6031(99)00159-8
https://doi.org/10.1016/s0040-6031(99)00159-8
Publikováno v:
Journal of Non-Crystalline Solids. :329-335
Using electromagnetic levitation alloying calorimetry, the concentration and temperature dependence of the mixing enthalpy of liquid Ti–Ni and Fe–Ti–Ni alloys has been determined. For the Ti–Ni alloys, the measurements have been carried out a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c765160eeb38da82c377adc4faf43dd
https://doi.org/10.1016/s0022-3093(99)00258-6
https://doi.org/10.1016/s0022-3093(99)00258-6
Publikováno v:
Steel Research. 70:3-8
The mixing enthalpies of liquid Ti-Zr, Fe-Ti-Zr and Fe-Ni-Zr alloys were measured by levitation alloying calorimetry. The mixing enthalpy of Ti-Zr alloys is slightly exothermic and symmetric with an extreme value of -5.2 kJ mol -1 , It can be describ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bce5a8ec16e8fe4d8e01d1f1b86f257b
https://doi.org/10.1002/srin.199905593
https://doi.org/10.1002/srin.199905593
Autor:
T. Schmidt-Lehmann, G. Kuppermann, U. Thiedemann, K. Drewes, Martin G. Frohberg, M. Rösner-Kuhn
Publikováno v:
Berichte der Bunsengesellschaft für physikalische Chemie. 102:1163-1166
Based on activity data for the components in the bulk phase and the surface tension of the constituent metals. the Butler equation is applied to liquid Fe-Ti alloys to calculate the surface composition, the activities of the components in the surface
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af546e5afd80695855874b144e0f5508
https://doi.org/10.1002/bbpc.19981020917
https://doi.org/10.1002/bbpc.19981020917
Autor:
M.C Flemings, Martin G. Frohberg, M. Rösner-Kuhn, G. Kuppermann, D.M Matson, U. Thiedemann, K. Drewes
Publikováno v:
Thermochimica Acta. 314:123-129
Investigations on measuring the activities and the mixing enthalpies of the Fe–Ni, Ni–Cr and Fe–Cr liquid binary systems show only weak negative deviations from ideal behaviour. Therefore, only small atomic interactions occur between the atoms
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c1c3eb6b6989d23b418e9ac4cfed06d
https://doi.org/10.1016/s0040-6031(97)00460-7
https://doi.org/10.1016/s0040-6031(97)00460-7
Autor:
M. Rösner-Kuhn, U. Thiedemann, Merton C. Flemings, Douglas M. Matson, G. Kuppermann, K. Drewes, Martin G. Frohberg
Publikováno v:
Steel Research. 69:3-7
The mixing enthalpies of liquid binary iron-nickel, nickel-chromium and iron-chromium alloys were measured by levitation alloying calorimetry. The mixing enthalpy of iron-nickel alloys is asymmetric and was described by an equation according to the m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17ee00ab367348e86798923bc97c675e
https://doi.org/10.1002/srin.199801599
https://doi.org/10.1002/srin.199801599
Publikováno v:
Materials Science and Engineering: A. 241:99-103
Electromagnetic levitated liquid cobalt was undercooled with the purpose to trigger solidification at desired temperatures. Triggering was performed at the underside of the sample. The solidification velocity was determined by detecting the trigger s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc196cff182ebd5ea9c6460ad2b99429
https://doi.org/10.1016/s0921-5093(97)00475-9
https://doi.org/10.1016/s0921-5093(97)00475-9
Autor:
M. Rösner-Kuhn, Klaus Schaefers, E.-M. Nüsperling, U. Thiedemann, Martin G. Frohberg, Jianping Qin
Publikováno v:
Revue de Métallurgie. 94:219-226
Les enthalpies de melange, ΔHM , du systeme ternaire liquide Fe-Nb-V ont ete mesurees le long de la coupe Fe2 Nb-V, pour la premiere fois, par calorimetrie de melange en levitation. Partant de la combinaison intermetallique Fe2 Nb, le vanadium est a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b077d06a9089fedec847f217c11d9a09
https://doi.org/10.1051/metal/199794020219
https://doi.org/10.1051/metal/199794020219