| 摘要 |
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 R1 is a single bond or C1-C6-alkylene, R2 to R6 are each independently H, OH, –X-COOH, C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkynyl, C3-C7-cycloalkyl, C6-C12-aryl, COOR7, OR8,1or two adjacent groups R2 to R6 together form a ring, X is a single bond or C1-C6-alkylene; R7, R8 are C1-C20-alkyl; or a salt of the carboxylic acid, and/or 20(b)a compound of the general formula (II) (R9-O-)(R10-O-)(R11-O-)PO (II) wherein R9 to R11 independently of each other indicate C1-C20-alkyl, C2-C20-alkenyl, C2-C6-alkynyl, C3-C7-cycloalkyl, C6-C12-aryl, unsubstituted or substituted with one or more groups selected from OH and NH2,or R9 to R11 are each independently a polydiol moiety having a molecular weight MW of 500 30 to 30000g/mol which is optionally capped at the end by -C-C20-alkyl and/or at the connection to O atom bonding to P by C1-C20-alkylene,or R10, R11are 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. |
