| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a porous heat dissipation material which has a strong absorptive power by capillary attraction of liquid and also can evaporate liquid efficiently, eliminating an evaporation heat and has an excellent heat dissipation property. <P>SOLUTION: This material is made of a porous sintered material having a frame with porosities around which metal powders are sintered. Preferably, the frame shall have an average capillary diameter of 200 μm or less and an average pore diameter 3000 μm or less and a percentage of voids of the whole porous material shall be 60% or more and 95% or less in volume rate. This material can be used, for instance, for cooling a membrane electrode junction of a direct methanol type fuel cell. <P>COPYRIGHT: (C)2007,JPO&INPIT |
