Process for producing heat sintered metal particles, metal particles paste composition, process for producing solid metal or solid metal alloy, the joining method of the metal member, the manufacturing method and the electrical circuit connection bumps of the printed wiring board manufacturing way

摘要

PROBLEM TO BE SOLVED: To provide production methods of a heating sinterability metal microparticle and a pasty metal microparticle composition in which a metal microparticle is sintered at relatively low temperature, and that become a solid shape metal in which adhesive strength, hardness, an electrical conduction property, and thermal conductivity are excellent; and a joint method of a metal member subject using the heating sinterability metal microparticle.;SOLUTION: An organic material coating a metal microparticle surface and having a polar group is substituted by a polymer dispersant having an acidic functional group and a basic functional group. A pasty object including a heating sinterability metal microparticle or a heating sinterability metal microparticle and a heating sinterability metal particle, and a volatile dispersion medium in which a boiling point is 70°C-300°C is heated, thereby the volatile dispersion medium is volatilized, the heating sinterability metal microparticles or the heating sinterability metal microparticle and the heating sinterability metal particle are sintered to become a solid shape metal.;COPYRIGHT: (C)2014,JPO&INPIT