R T B C based rare earth magnetic powder and bonded magnet

A method of making an R-T-B-C based rare earth alloy magnetic material, the method comprising the step of obtaining the R-T-B-C based rare-earth alloy magnetic material, including a first compound phase with an R2Fe14B type crystal structure and a second compound phase having a diffraction peak at a site with an interplanar spacing d of 0.295 nm to 0.300 nm, by rapidly quenching a melt of an R-T-B-C based rare-earth alloy (where R is at least one of the rare-earth elements including Y, T is a transition metal including iron as its main ingredient, B is boron, and C is carbon), wherein an intensity ratio of the diffraction peak of the second compound phase to that of the first compound phase representing a (410) plane is at least 10%.

A method of making an R-T-B-C based rare-earth alloy magnetic material, the method comprising the steps of:

• preparing an R-T-B-C based rare-earth rapidly solidified alloy (where R is at least one of the rare-earth elements including Y, T is a transition metal including iron as its main ingredient, B is boron, and C is carbon) by melting and rapidly quenching and solidifying a collected and used R-T-B based rare-earth magnet;
• and
• thermally treating and crystallizing the R-T-B-C based rare-earth rapidly solidified alloy.