Room temperature direct metal-metal bonding

A method for forming direct metal-metal bond between metallic surfaces, the method comprising:

• depositing a first nanostructured organic coating on a first metallic surface to form a first passivation layer thereon, the first nanostructured organic coating comprising an organic phase with nanoparticles dispersed within the organic phase;
• contacting the first nanostructured organic coating with a second metallic surface;
• and
• applying on the first and second metallic surfaces at least a bonding temperature of at least room temperature and/or a bonding pressure for a bonding period to bond the first and second metallic surfaces thereby forming the direct metal-metal bond therebetween.

A method for forming direct metal-metal bond between metallic surfaces, the method comprising:

• depositing a first nanostructured organic coating on a first metallic surface to form a first passivation layer thereon, the first nanostructured organic coating comprising an organic phase with nanoparticles dispersed within the organic phase;
• depositing a second nanostructured organic coating on a second metallic surface to form a second passivation layer thereon, the second nanostructured organic coating comprising an organic phase with nanoparticles dispersed within the organic phase;
• contacting the first nanostructured organic coating with the second nanostructured organic coating;
• and
• applying on the first and second metallic surfaces at least a bonding temperature of at least room temperature and/or a bonding pressure for a bonding period to bond the first and second metallic surfaces thereby forming the direct metal-metal bond therebetween.