NON-CORROSIVE SOFT-MAGNETIC POWDER

The invention relates to a soft-magnetic powder comprising a core of a soft-magnetic material and a coating, the coating comprising an insulation treatment compound and an inhibitor, the inhibitor being: (a) a carboxylic acid with the general formula (I) wherein R 1 is a single bond or C 1 -C 6 -alk...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: LIEBSCHER, Ralf, HWANG, Jae Hyung, PAGANO, Sandro
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The invention relates to a soft-magnetic powder comprising a core of a soft-magnetic material and a coating, the coating comprising an insulation treatment compound and an inhibitor, the inhibitor being: (a) a carboxylic acid with the general formula (I) wherein R 1 is a single bond or C 1 -C 6 -alkylene, R 2 to R 6 are each independently H, OH, -X-COOH, C 1 -C 6 -alkyl, C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl, C 3 -C 7 -cycloalkyl, C 6 -C 12 -aryl, COOR 7 , OR 8 , or two adjacent groups R 2 to R 6 together form a ring, X is a single bond or C 1 -C 6 -alkylene; R 7 , R 8 are C 1 -C 20 -alkyl; or a salt of the carboxylic acid, and/or (b) a compound of the general formula (II) €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ (R 9 -O-)(R 10 -O-)(R 11 -O-)PO€ƒ€ƒ€ƒ€ƒ€ƒ(II) wherein R 9 to R 11 independently of each other indicate C 1 -C 20 -alkyl, C 2 -C 20 -alkenyl, C 2 -C 6 -alkynyl, C 3 -C 7 -cycloalkyl, C 6 -C 12 -aryl, unsubstituted or substituted with one or more groups selected from OH and NH 2 , or R 9 to R 11 are each independently a polydiol moiety having a molecular weight Mw of 500 to 30000 g/mol which is optionally capped at the end by -C 1 -C 20 -alkyl and/or at the connection to O atom bonding to P by C 1 -C 20 -alkylene, or R 10 , R 11 are each independently H. The invention further relates to a process for producing the soft-magnetic powder and an electronic component comprising the soft-magnetic powder.