T/MBJX 0005-2020 Active Group standards

T/MBJX 0005-2020 Helmholtz coil measurement of permanent magnet moment

Publish Date: 2020-10-26 Implement Date: 2020-11-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Price: $ 20.00

Out of stock

Basic Information

Standard Code: T/MBJX 0005-2020

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Measurement

ICS Name: Magnetic materials

Publish Date: 2020-10-26

Implement Date: 2020-11-01

Scope

Scope: This standard applies to the measurement of magnetic moment of permanent magnets, such as aluminum-nickel-cobalt permanent magnets, iron-chromium-cobalt permanent magnets, ferrite permanent magnets, rare-earth permanent magnets, and composite permanent magnets, which only have one pair of magnetic poles. Main technical content: The two commonly used methods for measuring the magnetic properties of permanent magnet products are measuring the surface magnetic field of the permanent magnet and measuring the magnetic flux of the permanent magnet. The repeatability of measuring the surface magnetic field is poor, and the magnetic flux measurement includes custom coil measurement method and Helmholtz coil measurement method, among which the Helmholtz measurement method is the most widely used. The magnetic flux only provides reliable comparative data. After calibrating the Helmholtz coil constant, the magnetic moment of the permanent magnet can be calculated, and then the magnetization intensity of the permanent magnet material, the estimated remanent magnetization, coercivity, and maximum magnetic energy product of the permanent magnet material and other basic magnetic parameters can be obtained. That is to say, the magnetic moment can reflect the intrinsic magnetic properties of the permanent magnet material.