|発明の名称||PRODUCTION METHOD OF POROUS LAYER, JOINING METHOD OF METAL AND RESIN, POROUS LAYER, JOINED STRUCTURE OF METAL AND RESIN|
PROBLEM TO BE SOLVED: To provide a production method of a porous layer, with which both improved porosity and sufficient sinterability are achieved even if a temperature set for sintering metal powder is not raised.
SOLUTION: In a production method of a porous layer: Ti powder, Al powder, and NaCl powder are mixed together (procedures 1, 2); the mixture is pressurized and heated in a pressure and temperature condition in which the Al powder is diffused and the NaCl powder is not decomposed (procedure 3) so as to sinter the Ti powder; and subsequently the NaCl powder is removed with water (procedures 4, 5). In the production method of the porous layer: because cavities caused by sintering of the Ti powder and those caused by removal of the NaCl powder are formed in the Ti-Al alloy, high porosity is materialized; and TiAl3, generated by a reaction of the diffused Al powder, having been diffused only by raising a set temperature to a temperature near to the melting point of Al, and the Ti powder, functions as a binder to bond pieces of the Ti powder with one another, and sufficient sinterability is obtained.
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