Thermodynamic properties of praseodymium silicides in the temperature range 298.15-2257 K

Gorbachuk, N. P.; Bolgar, A. S.; Blinder, A. V.

doi:10.1007/bf02680501

Cited by 4 publications

(8 citation statements)

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“…The Pr 5 Si 3 and Pr 5 Si 4 phases formed at 1417°C and 1532°C by peritectic reactions, while PrSi melted congruently at 1657°C and Pr 3 Si 4 formed at 1352°C by a peritectoid reaction. Besides, Gorbachuk et al determined the melting temperatures of the Pr 5 Si 3 , Pr 5 Si 4 , PrSi, and Pr 5 Si 9 phases utilizing HTC, which were close to those in Ref. .…”

Section: Literature Reviewsupporting

confidence: 75%

“…Comparing with the work of Kim et al, the liquidus in our work is more close to the reported experimental data, especially in the composition range from 15 to 50 at.% Pr Same as the La‐Si system, the temperature of the eutectic reaction, L

false⇌

β‐Pr 5 Si 9 + PrSi, is also increased to meet the liquidus and melting points at the same time. As discussed in Section 2.3, in accordance with Gorbachuk et al and Kim et al, the polymorphic transition temperature for Pr 5 Si 9 is optimized to be 32°C.…”

Section: Resultsmentioning

confidence: 94%

“…Calculated Pr‐Si phase diagram together with thermodynamic properties: (A) Pr‐Si phase diagram; (B) heat capacities of Pr 5 Si 3 , Pr 5 Si 4 , PrSi, α‐Pr 5 Si 9 , and β‐Pr 5 Si 9 by adiabatic calorimetry; (C) enthalpy increments (H T ‐H 298 ) of Pr 5 Si 3 , Pr 5 Si 4 , PrSi, and Pr 5 Si 9 by high‐temperature calorimetry; (D) standard enthalpy of formation direct reaction calorimetry and mass‐spectrometry; (E) standard entropy by adiabatic calorimetry [Color figure can be viewed at wileyonlinelibrary.com]…”

Section: Resultsmentioning

confidence: 99%

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Thermodynamic descriptions of the light rare‐earth elements in silicon carbide ceramics

Chang

Zhou

et al. 2020

J Am Ceram Soc

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The Y3Si2C2 coating on the silicon carbide (SiC) powders is reported to improve the sintering process, but the relatively high sintering temperature (1600°C) restricts the engineering application. A series of thermodynamic descriptions for the SiC with light rare‐earth elements are desired to develop potential SiC‐RE3Si2C2 core‐shell structures as sintering aids with lower temperatures. Coupling the CALPHAD (CALculation of PHAse Diagram) approach and first‐principles calculations, we have investigated the RE‐Si‐C (RE = La, Ce and Pr) systems. In the SiC‐RE3Si2C2 core‐shell structures, the RE3Si2C2 phases can react with SiC via ternary eutectic reactions at 810°C, 747°C, and 1148°C respectively. The predicted thermal behaviors of the Pr3Si2C2 phase were further confirmed by our key experiments. Therefore, our database can be used to predict promising sintering aids and guide the subsequent processes.

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Section: Literature Reviewsupporting

confidence: 75%

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

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Thermodynamic descriptions of the light rare‐earth elements in silicon carbide ceramics

Chang

Zhou

et al. 2020

J Am Ceram Soc

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“…Phase relations in the Pr-Si system relevant for the Pr 5 Si 3 crystal growth are well-known [5,10,11], but several open questions remain, e.g., in Refs. [12,13] a Pr 3 Si 2 compound is reported, which was not observed by other groups [10,14].…”

Section: Introductionmentioning

confidence: 65%

Floating zone growth and characterization of Pr5Si3 single crystals

Souptel

Leithe‐Jasper

Löser

et al. 2004

Journal of Crystal Growth

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“…The presence of Pr 3 Si 2 was first reported in Ref. [3], but has not been reproduced in more recent studies [2,4,5]. Magnetic and electrical properties of the binary system have also been extensively studied [5].…”

Section: Introductionmentioning

confidence: 98%

Magnetism and the absence of superconductivity in the praseodymium–silicon system doped with carbon and boron

Venta

Basaran

Grant

et al. 2013

Journal of Magnetism and Magnetic Materials

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Keywords:Rare earth compound Praseodymium silicide Magnetism and superconductivity search for new phase High-pressure high temperature a b s t r a c tWe searched for new structural, magnetic and superconductivity phases in the Pr-Si system using highpressure high-temperature and arc melting syntheses. Both high and low Si concentration areas of the phase diagram were explored. Although a similar approach in the La-Si system produced new stable superconducting phases, in the Pr-Si system we did not find any new superconductors. At low Si concentrations, the arc-melted samples were doped with C or B. It was found that addition of C gave rise to multiple previously unknown ferromagnetic phases. Furthermore, X-ray refinement of the undoped samples confirmed the existence of the so far elusive Pr 3 Si 2 phase.

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Thermodynamic properties of praseodymium silicides in the temperature range 298.15-2257 K

Cited by 4 publications

References 0 publications

Thermodynamic descriptions of the light rare‐earth elements in silicon carbide ceramics

Thermodynamic descriptions of the light rare‐earth elements in silicon carbide ceramics

Floating zone growth and characterization of Pr5Si3 single crystals

Magnetism and the absence of superconductivity in the praseodymium–silicon system doped with carbon and boron

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