| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermally conductive filler having a composite particle from whose surface a boron nitride fine particle is hardly dropped off even when stress and heat are applied, and capable of maintaining relaxation of anisotropy in thermal conductivity caused due to orientation tendency of the boron nitride fine particle.SOLUTION: This thermally conductive filler includes the composite particle including a boron nitride fine particle 22 and a binder 3. The composite particle has a solid core part 11 containing the fine particle 22 in an unoriented state. The binder 3 comprises an inorganic substance substantially. For instance, the binder 3 is composed of alumina. The composite particle may have a surface layer with the core part 11. |
