Gamma-Densitometer for Studies of High-Temperature Metal Melts

Rusanov, B. A.; Baglasova, E. S.; Popel, P. S.; Сидоров, В. Е.; Sabirzyanov, A. A.

doi:10.1134/s0018151x18020190

Cited by 19 publications

(4 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Density (d) of the alloys was studied by the absolute variant of gamma-absorption method in the temperature range T = 300-1550 K at a heating/cooling rate of 2 K min −1 in helium atmosphere using the equipment described in [26]. The installation scheme is shown in figure 1.…”

Section: Alloys With the Compositionsmentioning

confidence: 99%

Influence of rare earth metals on volumetric characteristics of Al-Ni-Co-R alloys in crystalline and liquid states

Rusanov

Сидоров

2023

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

Density of Al-Ni-Co-R (R = Nd, Sm, Gd, Tb, Yb) glass-forming alloys is studied experimentally by gamma-absorption method in a wide temperature range including crystalline and liquid states. Molar volumes and thermal expansion coefficients are calculated from the experimental data. It is shown that these melts remain strongly microheterogeneous systems at small overheatings above liquidus. Some regimes of melt heat treatment before quenching are discussed.

show abstract

Section: Alloys With the Compositionsmentioning

confidence: 99%

Influence of rare earth metals on volumetric characteristics of Al-Ni-Co-R alloys in crystalline and liquid states

Rusanov

Сидоров

2023

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

show abstract

“…Several other workers have used gamma ray attenuation method to study thermal properties of various metals, alloys and compounds. Rusanov et al [21] reported thermophysical properties of molten aluminum, cadmium, tin, and bismuth. Abdullaev et al [22] reported results on high purity nickel in the temperature range 150 K-2030 K. Stankus et al [23,24] have studied the density of lithium and bismuth as a function of temperature in the condensed state.…”

Section: Introductionmentioning

confidence: 99%

Thermal expansion of lanthanum and neodymium oxides from 300–1000 K from measurements of attenuation of gamma rays

Rao¹,

Krishna²,

Lingam³

2021

Phys. Scr.

View full text Add to dashboard Cite

The present communication is a study of the linear attenuation coefficients, density and thermal expansion of oxides of lanthanum and neodymium as a function of temperature from 300–1000 K. The values of thermal expansion have been determined from linear attenuation coefficient of gamma rays and density in the range 300–1000 K. Measurements on the attenuation of gamma rays have been made with an experimental set up assembled in our laboratory using narrow beam geometry method. Radioactive gamma source 137Cs (0.662 MeV) has been used for making measurements. The results on the linear gamma ray attenuation (μ l), density (ρ) and the coefficient of linear thermal expansion (α) of Lanthanum oxide (La2O3)and Neodymium oxide (Nd2O3) as a function of temperature have been fit to a second degree polynomial equation. The linear attenuation coefficient (μ l) of La2O3 shows a decrease from 50.87 m−1 at 350 K to 49.96 m−1 at 1000 K. The linear attenuation coefficient (μ l) of Nd2O3 shows a decrease from 59.04 m−1 at 350 K to 58.07 m−1 at 1000 K. The decrease in density for lanthanum and neodymium oxides from 350–1000 K is 1.79% and 1.64% respectively. The present results on the thermal expansion of La2O3 and Nd2O3 have been compared with the results obtained from x-ray diffraction method.

show abstract

“…Предварительно образцы переплавляли в печи сопротивления в тиглях из оксида бериллия для придания им строгой цилиндрической формы. Согласно данному методу, величина электрического сопротивления прямо пропорциональна отношению плотностей исследуемого образца и эталона, следовательно, точность в определении плотности сплавов вносит существенный вклад в погрешность измерения ρ. Плотность измерена на автоматизированной установке, реализующей абсолютный вариант метода проникающего гамма-излучения, подробное описание которой приведено в работе[12]. В итоге суммарная относительная погрешность определения электрического сопротивления составила ±3%.…”

unclassified

Электрическое сопротивление и магнитная восприимчивость сплавов CoFeSiBNb + REM при высоких температурах

Русанов¹,

Сидоров²,

Михайлов³

et al. 2021

Журнал Технической Физики

View full text Add to dashboard Cite

Electrical resistivity and magnetic susceptibility of Co48Fe25Si4B19Nb4 + R (R = Nd, Sm, Tb, Yb) alloys in crystalline and liquid states were studied in present work. Electronic characteristics (effective magnetic moment, density of states at the Fermi level and paramagnetic Curie temperature) were calculated from experimental data. It is shown that all rare earth metals that were used should increase the glass-forming ability of alloys, but neodymium and samarium can have the greatest effect.

show abstract

Gamma-Densitometer for Studies of High-Temperature Metal Melts

Cited by 19 publications

References 8 publications

Influence of rare earth metals on volumetric characteristics of Al-Ni-Co-R alloys in crystalline and liquid states

Influence of rare earth metals on volumetric characteristics of Al-Ni-Co-R alloys in crystalline and liquid states

Thermal expansion of lanthanum and neodymium oxides from 300–1000 K from measurements of attenuation of gamma rays

Электрическое сопротивление и магнитная восприимчивость сплавов CoFeSiBNb + REM при высоких температурах

Contact Info

Product

Resources

About