Method for increasing magnetic induction intensity of soft magnetic metallic materials

A method for increasing magnetic induction intensity of soft magnetic metallic materials, the method comprising:

• carburizing or carbonitriding the soft magnetic metallic materials with the carbon source or a carbonitriding agent by a heat treatment process, to increase the magnetic induction intensity of the soft magnetic metallic materials,
• wherein the soft magnetic metallic materials are selected from at least one of amorphous materials, nanocrystals, silicon steel, or pure iron;
• wherein the carbonitriding agent is a mixture of the carbon source and a nitrogen source, a mole ratio of carbon to nitrogen in the carbonitriding agent ranges from 2:1 to 5:1, and the nitrogen source is an ammonia nitrogen source or an amine nitrogen source;
• wherein the carburizing further comprises carburizing the soft magnetic metallic materials with the carbon source and a carburizing promoter;
• and
• wherein the carbon source is an oily carbon source or a resin carbon source, wherein the oily carbon source comprises an oil carbon source and a fat carbon source;
• a surface treatment agent for the carburizing or the carbonitriding further comprises a carbon powder or graphite powder, and the carburizing promoter, wherein a doping mass of the at least one of the carbon powder or graphite powder accounts for 5% to 50% of a total mass of the carbon source, particle sizes of the carbon powder and the graphite powder are both controlled in a nanometer scale, and a doping mass of the carburizing promoter accounts for 10% or less of the total mass of the carbon source.