Solidification behavior of low and high thermal conductivity materials in a Bridgman-Stockbarger furnace

Ejim, T.I.; Jesser, W. A.; Fripp, A. L.

doi:10.1016/0022-0248(84)90362-2

Cited by 13 publications

(1 citation statement)

References 6 publications

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“…However, it has been shown that the actual growth rate is different from the translation rate of the heater or crucible in the Bridgman unidirectional solidification of some materials. [9][10][11][12] The difference between the actual growth rate and the translation rate of the heater or crucible is thought to be accompanied by a variation of the temperature distribution near the solid-liquid interface, accordingly that of the macroscopic interface shape. Moreover, it is known that the formation of microdefects and the segregation of impurities in melt-grown crystal depends on the growth rate and axial temperature gradient at the solid-liquid interface.…”

Section: Introductionmentioning

confidence: 99%

Influence of Crucible Support Rod on the Growth Rate and Temperature Gradient in a Bridgman Growth of Tin Crystal

Imashimizu

Miura

Kamata

et al. 2003

Int. J. Soc. Mater. Eng. Resour

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Bridgman growth of tin crystal was carried out in a graphite crucible that was fixed on a quartz support rod or a copper one. The growth rate and axial temperature distribution were examined by recording the temperature variation with time at each of four prescribed positions in the solid-liquid system during solidification. 1) Actual growth rate of crystal increased with progress of solidification while the furnace elevated at a constant rate, but the tendency was different depending on the type of support rod used. 2) We could increase the temperature gradient in the crystal-melt system without varying the interface shape, if we used a copper support rod in place of a quartz one together with raising the maximum temperature of the furnace.3) The thermal conductivity of the crucible support rod is thought to be an important factor affecting the growth rate and temperature gradient in the growth system in the Bridgman process.

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Section: Introductionmentioning

confidence: 99%