Density and Thermal Expansion of Magnesium–Calcium Alloys in Solid and Liquid States

• Published in: International journal of thermophysics Vol. 44; no. 5
• Main Authors: Abdullaev, Rasul N., Khairulin, Rashid A., Kozlovskii, Yurii M., Stankus, Sergei V., Agazhanov, Alibek Sh
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.05.2023; Springer Nature B.V
• Subjects: Calcium base alloys; Calcium compounds; Classical Mechanics; Condensed Matter Physics; Crystallization; Density; Dilatometry; Gamma rays; Geophysics; Industrial Chemistry/Chemical Engineering; Intermetallic compounds; Magnesium base alloys; Physical Chemistry; Physics; Physics and Astronomy; Thermal expansion; Thermodynamics; Gamma-ray attenuation technique; Thermal expansion; Dilatometric method; Magnesium–calcium system; Density
• ISSN: 0195-928X; 1572-9567
• DOI: 10.1007/s10765-023-03187-1

Experimental studies of the volumetric properties of the Mg 2 Ca intermetallic compound and eutectic magnesium–calcium alloys (with compositions of 10.5 and 73 at.% calcium) in the temperature range of 100 K to 1230 K of the solid and liquid states were carried out using the gamma-ray attenuation technique and the dilatometric method. Measurements of the density and volumetric thermal expansion coefficient of Mg–Ca melts, as well as the density change during melting-crystallization, were performed for the first time. The concentration dependences of the volumetric properties of the Mg–Ca system and approaches for calculating density and thermal expansion coefficients of promising magnesium–calcium alloys are proposed.