Synthesis method of copper silver alloy, formation method of conductive part, copper silver alloy and conductive part

摘要

Provided are a method for synthesizing a copper silver alloy, a method for forming a conductive portion, and a copper silver alloy and a conductive portion capable of easily synthesizing a copper silver alloy at a low temperature and in a short time. The present invention provides an ink preparation step of preparing copper silver ink by mixing copper salt particles, an amine solvent and silver salt particles, a coating step of applying copper silver ink to a coating member, and a crystal grain size of 0.2 from a copper silver ink. A crystal nucleation process for producing at least one of a copper crystal nucleus with a diameter of less than or equal to µm and a silver crystal nucleus with a particle diameter of 0.2 µm or less, and a crystal nucleation step for synthesizing the crystal nucleus of copper and the crystal nucleus of silver.