Transient Liquid Phase Compositions Having Multi-Layer Particles

A bonding assembly comprising:

• a metal foil comprising a first surface and a second surface, wherein the metal foil comprises tin;
• and
• a transient liquid phase composition comprising a plurality of particles disposed in the first surface and/or the second surface of the metal foil, each particle comprising:
• a core comprising a first high melting temperature material, wherein the first high melting temperature material is nickel, silver, copper, or aluminum;
• an inner shell surrounding the core, the inner shell comprising a second high melting temperature material, wherein the second high melting temperature material of the inner shell is nickel or silver;
• and
• an outer shell surrounding the inner shell, wherein the outer shell is tin.

A composition comprising:

• a plurality of first particles comprising:
• a core comprising a first metal;
• and
• a shell surrounding the core, wherein the shell comprises a polymer material;
• and
• a plurality of second particles comprising a second metal, wherein a melting point temperature of the first metal is greater than a melting point temperature of the second metal.