Effect of Cr, C, B and Mo substitutions on the structure and magnetic properties of Zr-Co Rare-Earth-free magnetic alloy

8th Conference on Material Science and Engineering

工业技术（总论）;材料科学

Tolea, F.^1 ; Palade, P.^1 ; Sofronie, M.^1 ; Popescu, B.^1 ; Kuncser, V.^1

National Institute of Materials Physics, POB MG-7, Bucharest-Magurele

77125, Romania^1

关键词: Atomic radius;    Hard magnetic phase;    High anisotropy;    Magnetic alloy;    Microalloying effects;    Partial substitution;    Rare-earth-free;    Structural and magnetic properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/485/1/012028/pdf
DOI  :  10.1088/1757-899X/485/1/012028

来源: IOP

【 摘 要 】

Acquiring new permanent magnets without Rare-Earths is a new challenge in the field of magnetic materials and Co-rich Co-Zr alloys seem to be a solution to be pursued. The microalloying effects of different elements on the structure and stabilization of hard magnetic Zr2Co11 phase of Zr-Co alloy have been analysed in the past and it was shown that the Zr2Co11 non-cubic high anisotropy structure can be stabilized by the partial substitution of Co in the ZrCo alloy with elements with high atomic radius. In the present work, we made substitutions of up to 5% alloying elements such as Mo, C, B, Cr in order to highlight how the element with the small / large atomic radius stabilize the nano-hard magnetic phase. The structural and magnetic properties of the new Zr18Co77Cr3X2 (X = C, B, Mo) prepared bulk alloys have been analysed and related to those of the original Zr13Co87.