| 摘要 |
PROBLEM TO BE SOLVED: To provide a sintered compact which can exactly realize a new function. SOLUTION: The sintered compact 1 has a cylindrical shape, an enhanced density in one side of the shaft direction, and a reduced density in the other side of the shaft direction so as to give an enhanced specific surface area. Thereby, the compact realizes a new function which ensures mounting strength at one side of the shaft direction of the sintered compact, and a high heat- radiation effect at the other side based on the increased specific surface area, without increasing the dimension. |
