Thermodynamic evaluation of the Cr-Ni-C system

Kajihara, Masahiro; Hillert, Mats

doi:10.1007/bf02646072

Cited by 39 publications

(7 citation statements)

References 13 publications

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“…An isothermal section at 1053 K of the phase diagram in the ternary Cu-NbSn system was calculated by the technique reported in a previous study. 20) In the isothermal section, the three-phase equilibrium of Cu + Nb + Nb 3 Sn appears at an activity of Sn with 0.0047. When the activity a …”

Section: Discussionmentioning

confidence: 98%

Quantitative Explanation for Uphill Diffusion of Sn during Reactive Diffusion between Cu–Sn Alloys and Nb

Yamashina

Kajihara

2006

Mater. Trans.

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In a bronze method, uphill diffusion of Sn takes place from a binary Cu-Sn alloy to Nb 3 Sn during reactive diffusion between the Cu-Sn alloy and Nb at temperatures around 1000 K. In order to account for the occurrence of the uphill diffusion quantitatively, the phase equilibria in the ternary Cu-Nb-Sn system were theoretically analyzed using a thermodynamic model for phases with different sublattices. In this ternary system, there is no ternary compound and the solubility of the third component is very small for all the phases. Consequently, the ternary interaction was assumed negligible, and thus the Gibbs energy of each phase was expressed with the thermodynamic parameters of the relevant binary systems. In an isothermal section calculated at 1053 K, the three-phase equilibrium of Cu + Nb + Nb 3 Sn appears at an activity of Sn with 0.0047. If the activity a

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Section: Discussionmentioning

confidence: 98%

Quantitative Explanation for Uphill Diffusion of Sn during Reactive Diffusion between Cu–Sn Alloys and Nb

Yamashina

Kajihara

2006

Mater. Trans.

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“…[22] It was, however, established by Kajihara and Hillert that the Gibbs energies of formation of the carbides obtained from this assessment were too negative to agree with the experimental data for the Ni-Cr-C system. [35] In order to improve the agreement, Kajihara and Hillert modified Andersson's thermodynamic description of the carbides in the Cr-C system. The parameters employed by these authors, however, did not lead to acceptable results in the Fe-Cr-V-C system.…”

Section: Knudsen Effusion Cells (1963) Coltters and Beltonmentioning

confidence: 99%

Thermodynamic investigations of Cr3C2 and reassessment of the Cr-C system

Teng

Aune

et al. 2004

Metall Mater Trans A

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have been obtained from electromotive force (EMF) measurements, in the temperature range 950 to 1150 K, using the following galvanic cells with CaF 2 single crystals as the electrolyte:Cr, CrF 2 |CaF 2 | CrF 2 , Cr 3 C 2 , C (950 to 1150 K) Extreme precautions were taken during the experimental measurements to avoid errors. The reliability and reproducibility of the values were confirmed by careful repetition of several of the experiments. The following equation has been obtained by a linear analysis of the EMF results as a function of temperature:The generated values are compared with those reported in the literature.The values of the enthalpy of formation were evaluated by using a third-law analysis, and an average value of was obtained. The ground-state energy of the hypothetic end-member compound CrC 3 in the bcc structure at 0 K was calculated by using the ab initio method. The experimental results obtained, as well as the results from the ab initio calculations, were employed in a reassessment of the Cr-C system using the CALPHAD approach. A new set of parameters for the bcc phase was evaluated using first-principles calculations.⌬ f H°2 98 ϭ Ϫ71.7 kJ>mol ⌬ f G°C r 3 C 2 (Ϯ1600) ϭ Ϫ58,857 Ϫ22.344T (J # mol Ϫ1 ) (950 to 1150 K)

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“…However, in the work of Kajihara and Hillert [19] the values of Andersson were found to be too stable to be able to describe the ternary Ni-Cr-C system.…”

Section: Frisk and Markström Based Theirmentioning

confidence: 89%

“…Calculated isoplethal section at 6 mass-% Co and 0.6 mass-% Cr using the description of the Cr-C system from Kajihara and Hillert[19] (dotted lines) compared with the calculated isoplethal section fromFig. 1 (solid lines).…”

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confidence: 99%

Thermodynamic calculations and experimental verification in the WC–Co–Cr cemented carbide system

Kaplan

Norgren

Schwind³

et al. 2015

International Journal of Refractory Metals and Hard Materials

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Thermodynamic evaluation of the Cr-Ni-C system

Cited by 39 publications

References 13 publications

Quantitative Explanation for Uphill Diffusion of Sn during Reactive Diffusion between Cu–Sn Alloys and Nb

Quantitative Explanation for Uphill Diffusion of Sn during Reactive Diffusion between Cu–Sn Alloys and Nb

Thermodynamic investigations of Cr3C2 and reassessment of the Cr-C system

Thermodynamic calculations and experimental verification in the WC–Co–Cr cemented carbide system

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Thermodynamic evaluation of the Cr-Ni-C system

Cited by 39 publications

References 13 publications

Quantitative Explanation for Uphill Diffusion of Sn during Reactive Diffusion between Cu&ndash;Sn Alloys and Nb

Quantitative Explanation for Uphill Diffusion of Sn during Reactive Diffusion between Cu&ndash;Sn Alloys and Nb

Thermodynamic investigations of Cr3C2 and reassessment of the Cr-C system

Thermodynamic calculations and experimental verification in the WC–Co–Cr cemented carbide system

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Quantitative Explanation for Uphill Diffusion of Sn during Reactive Diffusion between Cu–Sn Alloys and Nb

Quantitative Explanation for Uphill Diffusion of Sn during Reactive Diffusion between Cu–Sn Alloys and Nb