Results 261 to 270 of about 309,321 (307)

Sizes of crystallites as a function of cooling rate

Scripta Metallurgica et Materialia, 1994
The effect function model of phase transitions has been applied to the process of crystallization of the segregating solid solutions Pb[sub 1[minus]x]Sn[sub x]Te and Ge[sub 1[minus]x]Si[sub x] in order to determine the values of the maximum sizes of crystallites and the effective diffusion coefficients for the liquid phase.
Bakin, A.S.*, Romanenko, V.N.**, Schilz, J., Nikitina, G.V.*, Ivanov, D.I.**   +4 more
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Statically controlled cooling rate device

Cryobiology, 1979
Abstract A new statically controlled cooling rate device consists of metal plates and insulators which can be modified so as to control heat flow and achieve a considerable range of specific cooling rates. It can thus be adapted to give the desired cooling rates for the cryopreservation of various biological materials.
J H, Pert, G, Dayian
openaire   +2 more sources

Cryocrystallography: effect of cooling medium on sample cooling rate

Journal of Applied Crystallography, 1998
The rates of cooling of small samples with cold N2gas (100 K), liquid N2(77 K) and liquid propane (100 K) have been measured. The samples were one bare Cu-constantan thermocouple and one coated with a 0.25 mm layer of silicone rubber cement. Gas cooling yielded the lowest rate, liquid N2the highest.
Linda J. Walker, Phillip O. Moreno, Håkon Hope   +2 more
openaire   +1 more source

Edge Weld Cooling Rates

Transactions of the Canadian Society for Mechanical Engineering, 1983
Numerical modelling techniques are used to investigate the effect of heat source shape on the cooling rate (at 700 C) of edge welds. Cooling rates are determined for point, line, planar and volume heat sources. These, in turn, are compared to experimental values and to cooling rates calculated by the traditional Adams[1] relationship where the heal ...
A.S. Oddy, M.J. Bibby
openaire   +1 more source

Effect of cooling rate and alloying on the

Metallurgical Transactions, 1973
The pearlitic hardenability of a high-purity Fe-0.8 pct C alloy and zone-refined iron binary alloys containing Mn, Ni, Si, Mo, or Co was studied by means of hot-stage microscopy. The binary alloys were carburized in a gradient furnace to produce eutectoid compositions, thus eliminating proeutectoid phases.
B. L. Bramfitt, A. R. Marder
openaire   +1 more source

Cryopreservation: Vitrification and Controlled Rate Cooling

2017
Cryopreservation is the application of low temperatures to preserve the structural and functional integrity of cells and tissues. Conventional cooling protocols allow ice to form and solute concentrations to rise during the cryopreservation process. The damage caused by the rise in solute concentration can be mitigated by the use of compounds known as ...
openaire   +2 more sources

Cooling rates of seven hexahedrites

Geochimica et Cosmochimica Acta, 1978
Abstract Cooling rates for seven hexahedrites, (Uwet, Coahuila, Walker County, Lombard, Quillagua, Hex River Mountains and Tocopilla) have been determined using a ternary diffusion controlled phase growth analysis developed by the authors. The model is applied to the exsolution and growth of plate phosphides in the kamacite phase of hexahedrites ...
E. Randich, J.I. Goldstein
openaire   +1 more source

Rate of runaway evaporative cooling

Physical Review A, 2011
Evaporative cooling is a process that is essential in creating Bose-Einstein condensates in dilute atomic gasses. This process has often been simulated based on a model using a truncated Boltzmann distribution. This model assumes that the energy distribution up to the threshold energy can still be described by a Boltzmann distribution: it assumes ...
J. van de Groep, P. van der Straten, J. M. Vogels   +2 more
openaire   +1 more source

Cooling-rates in splat-cooling

Journal of Materials Science, 1972
J. Vitek, N. J. Grant
openaire   +1 more source

Is freezer cooling rate equal to sample cooling rate?

Cryobiology, 2018
Tim Rittinghaus, Birgit Glasmacher
openaire   +1 more source