Cooling rate upon in air heat treatment and magnetic properties of amorphous soft magnetic alloys

• Published in: Journal of magnetism and magnetic materials Vol. 470; pp. 156 - 158
• Main Authors: Skulkina, N.A., Ivanov, O.A., Denisov, N.D., Chekis, V.I.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15-01-2019; Elsevier BV
• Subjects: Alloys; Amorphous soft magnetic alloys; Chromium; Cooling; Cooling rate; Heat treating; Heat treatment; Interaction with vapor; Iron; Magnetic alloys; Magnetic permeability; Magnetic properties; Magnetism; Magnetization; Magnetization distribution; Magnetostriction; Manganese; Nickel; Silicon; Stress state; Water vapor; Amorphous soft magnetic alloys; Heat treatment; Magnetization; Magnetic permeability; Cooling rate; Magnetization distribution; Interaction with vapor
• ISSN: 0304-8853; 1873-4766
• DOI: 10.1016/j.jmmm.2017.11.056

•Investigation of the cooling rate effect during heat treatment in air of amorphous magnetic alloys of Fe-Ni-Si-B and Co-Fe-Ni-Cr-Mn-Si-B in states with different signs of magnetostriction saturation were performed to optimize the magnetic properties.•It is shown that the increase in cooling rate from 15 to 40 °C/min contributes to the magnetic properties improvement in a state with λs > 0 and their deterioration in a state with λs < 0.•This is due to the different influence of induced stresses in the interaction of the ribbon surface with atmospheric water vapor and changes their value with the cooling rate change.
Investigation of the cooling rate effect during heat treatment in air of amorphous magnetic alloys of Fe-Ni-Si-B and Co-Fe-Ni-Cr-Mn-Si-B in states with different signs of saturation magnetostriction were performed to optimize the magnetic properties. It is shown that the increase in cooling rate from 15 to 40 °C/min contributes to the magnetic properties improvement in a state with λs > 0 and their deterioration in a state with λs < 0. This is due to the different influence of induced stresses caused by interaction of ribbon surface with atmospheric water vapor, and their value changes affected by cooling rate change.