Patent ID: 8491998

Claim:
A two metallic component type composite nanometal paste, characterized in that said two metallic component type composite nanometal paste contains, as metal components, two components of a composite metal nanoparticle on which an organic coating layer is formed at a circumference of a metal core with an average particle diameter of d(nm), and a metal filler particle with an average particle diameter of D(nm); it has a first relation of d<D, and a second relation of d< 100(nm); and when said organic coating layer volatilizes so that a metal layer is formed by sintering, the size relation between said average particle diameters d, D is set so that said composite metal nanoparticle can be embedded in a hollow four pocket formed when it is assumed that four said metal filler particles are placed so that they come in contact with a tetrahedron, where said composite metal nanoparticle and said metal filler particle sinter compactly.