| 摘要 |
A method for producing a densified layer on the surface of a porous material having gas-containing voids which includes: (1) heating the outer surface of the porous material to cause localized removal of the gas contained in the voids so that the voids coalesce and form surface-connected channels, and (2) deforming the surface of the porous material to close the surface-connected channels so that a distinct, densified layer is formed at the surface of the porous material. The method is particularly applicable to the production of lightweight structural components.
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