Measurement of the magnetic properties of metal dusts and fumes

Measurement of the magnetic properties of metal dusts and fumes

An instrument for measuring the specific remanent moment and the pulse coercive force of ferro/ferrimagnetic dust samples has been constructed using a commercial fluxgate magnetometer as a detector. The minimum amount of dust needed for successful measurements is about 1 mg to match the amount of du...

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Veröffentlicht in:IEEE transactions on magnetics 1982-03, Vol.18 (2), p.788-791
Hauptverfasser: Moilanen, M., Kalliomaki, K., Kalliomaki, P., Aittoniemi, K.
Format: Artikel
Sprache:eng
Schlagworte:
Coercive force
Detectors
Ferrimagnetic materials
Force measurement
Instruments
Magnetic properties
Magnetometers
Measurement standards
Pollution measurement
Pulse measurements
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Beschreibung
Zusammenfassung:An instrument for measuring the specific remanent moment and the pulse coercive force of ferro/ferrimagnetic dust samples has been constructed using a commercial fluxgate magnetometer as a detector. The minimum amount of dust needed for successful measurements is about 1 mg to match the amount of dust collected when using standard air sampling methods. An output noise of 14 PT rms (smooth RC = 48 s) for the instrument has been achieved in a normal unshielded laboratory room. Examples of the magnetic properties of dust samples from different work environments are given for the calibration of the in vivo measurement of lung-retained magnetic contaminants.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.1982.1061822