Cubic boron nitride powder and manufacturing method therefor

A method for manufacturing a cubic boron nitride powder comprising:

• forming a mixture by mixing a boron nitride precursor powder and an additive powder;
• and
• heat-treating the mixture to form the cubic boron nitride powder having a core and a shell surrounding an outside of the core,
• wherein the additive powder for the core includes at least one of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, or Zn,
• wherein in the heat-treating the mixture, the boron nitride precursor powder is configured to react to form a boron nitride, and the boron nitride is configured to react with a surface of the additive powder to form the shell surrounding the outside of the core,
• wherein the shell comprises the boron nitride,
• wherein a crystal phase of the boron nitride has a cubic crystal phase,
• wherein the shell is directly in-contact with the surface of the additive powder for the core without an intermediate layer, and
• wherein the heat-treating the mixture includes an epitaxial growth of the cubic boron nitride powder at the surface of the additive powder for the core,
• wherein the additive powder is configured to form the core as a single and continuous layer.