| 摘要 |
PROBLEM TO BE SOLVED: To provide a porous composite material having excellent characteristics with respect to impact absorptivity, acoustic characteristics, noncombustibility, lightweight, rigidity, and the like. SOLUTION: The production of the composite material can be attained by providing a porous metal matrix material which consists of a matrix-forming metallic material and at least two kinds of particulate matters different from each other in wettability to the metallic material and can be obtained by infiltrating a mixture of the above at least two kinds of particulate matters into the matrix-forming metallic material.
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