| abstract |
The purpose of the present invention is to provide a spherical boron nitride fine powder having excellent filling properties, etc. Provided is a spherical boron nitride fine powder characterized by having properties (A) to (C): (A) in the composition of 10 nm of the surface of the spherical boron nitride fine powder, 0.1-3.0 atm% inclusive of one or more kinds of elements selected from among Si, Ti, Zr, Ce, Al, Mg, Ge, Ga and V are present; (B) the average particle diameter of the spherical boron nitride fine powder is 0.05-1 μm inclusive; and (C) the average degree of circularity of the spherical boron nitride fine powder is 0.8 or greater. |