Solid-liquid interfacial energy of camphene

The Gibbs-Thomson coefficient and the solid-liquid interfacial energy for camphene have been measured to be (8.58 +/- 0.96) x 10(-8) K m and (4.43 +/- 0.49) x 10(-3) J m(-2), respectively, by a direct method. The grain boundary energy of camphene has also been calculated to be (8.36 +/- 0.92) x 10-3 J m(-2) from the observed grain boundary groove shapes. (C) 1999 Elsevier Science S.A. All rights reserved

Dependency of the microstructure parameters on the solidification parameters for camphene

WOS: 000089379800018Camphene (>95% purity) was unidirectionally solidified in a temperature gradient stage. The microstructure parameters, viz., the primary dendrite arm spacing lambda(1), secondary dendrite arm spacing lambda(2), dendrite tip radius R, and mushy zone depth d, were measured for five different growth rates in a constant temperature gradient G and for five different temperature gradients in a constant growth rate V. The dependency of the microstructure parameters on the solidification parameters (V, G, and GV) for camphene were determined by linear regression analysis. Our results are in good agreement with previous works. (C) 2000 Elsevier Science Ltd. All rights reserved

Solid-liquid interfacial energy of camphene

The Gibbs-Thomson coefficient and the solid-liquid interfacial energy for camphene have been measured to be (8.58 ± 0.96) × 10-8 K m and (4.43 ± 0.49) × 10-3 J m-2, respectively, by a direct method. The grain boundary energy of camphene has also been calculated to be (8.36 ± 0.92) × 10-3 J m-2 from the observed grain boundary groove shapes. © 1999 Elsevier Science S.A. All rights reserved.The authors would like to thank Erciyes University Research Foundation for financial support to the project

Experimental determination of solid-liquid interfacial energy for Zn solid solution in equilibrium with the Zn-Al eutectic liquid

The equilibrated grain boundary groove shapes for the Zn solid solution in equilibrium with the Zn-Al eutectic liquid were observed by rapid quenching. From the observed grain boundary groove shapes, the Gibbs-Thomson coefficient and the solid-liquid interfacial energy for the Zn solid solution in equilibrium with the Zn-Al eutectic liquid have been determined to be (5.80 +/- 0.18) X 10(-8) Km and (93.496 +/- 7.57) X 10(-3) Jm(-2) with the numerical method and from the Gibbs-Thomson equation, respectively. The grain boundary energy for the same material has been calculated to be (182.302 +/- 18.23) X 10(-3) Jm(-2) from the observed grain boundary groove shapes. The thermal conductivities of the solid and liquid phases for Zn-5 wt pct Al and Zn-0.5 wt pct Al alloys have also been measured

Solid-Liquid Interfacial Energy of Solid Neopentylglycol Solution in Equilibrium with Neopentylglycol-Aminomethylpropanediol Eutectic Liquid

The grain boundary groove shapes for solid neopentylglycol solution (NPG-40 mol pct AMPD) in equilibrium with the neopentylglycol (NPG)-aminomethylpropanediol (AMPD) eutectic liquid (NPG-42.2 mol pct AMPD) have been directly observed using a horizontal linear temperature gradient apparatus. From the observed grain boundary groove shapes, the Gibbs-Thomson coefficient (D '') and solid-liquid interfacial energy (sigma (SL)) of solid NPG solution have been determined to be (7.4 +/- A 0.7) x 10(-8) K m and (6.4 +/- A 1.0) x 10(-3) J m(-2), respectively. The grain boundary energy of solid NPG solution has been determined to be (12.5 +/- A 1.0) x 10(-3) J m(-2) from the observed grain boundary groove shapes. The ratio of thermal conductivity of equilibrated eutectic liquid to thermal conductivity of solid NPG solution has also been determined to be 0.48. (C) The Minerals, Metals & Materials Society and ASM International 201