METAL JOINT STRUCTURE USING METAL NANOPARTICLE, AND METAL JOINING METHOD AND METAL JOINT MATERIAL

• Main Authors: ISHIKAWA SHINJI, TANAKA MASAMOTO, TATSUMI KOHEI, MATSUBARA NORIE
• Format: Patent
• Language: English; Japanese
• Published: 18.05.2015
• Subjects: BASIC ELECTRIC ELEMENTS; CASTING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MACHINE TOOLS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; POWDER METALLURGY; SEMICONDUCTOR DEVICES; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM; WORKING METALLIC POWDER

PROBLEM TO BE SOLVED: To provide a metal joint structure by which when two metal materials to be joined are joined by use of a joint layer using metal nanoparticles, a joint strength of the joint layer can be sufficiently held even if said two materials to be joined have different heat deformation quantities, and a metal joining method and a metal joint material.SOLUTION: A metal joint structure characterized in that a first joint layer 6 containing metal nanoparticles, a metal foil layer 7, and a second joint layer 8 containing metal nanoparticles are formed in this order between a joined surface (first joined surface) of a first joined body 1 and a second joining surface (second joined surface) of a second joined body 2. Even if there is a difference between thermal expansion quantities of the first material to be joined and the second material to be joined, the difference can be absorbed by deformation of the metal foil layer 7 in the joint structure, shear deformation quantities of the first joint layer 6 and the second joint layer 8 can be reduced, and a joint strength can be prevented from decreasing. 【課題】２つの被接合金属材料同士を金属ナノ粒子を用いた接合層によって接合するに際し、２つの被接合材の熱変形量が相違する場合であっても、接合層の接合強度を十分に保持することのできる金属接合構造及び金属接合方法並びに金属接合材料を提供する。【解決手段】第１被接合体１の被接合面（第１被接合面）と第２被接合体２の被接合面（第２被接合面）との間に、金属ナノ粒子を含む第１接合層６、金属箔層７、金属ナノ粒子を含む第２接合層８がこの順に形成されていることを特徴とする金属接合構造である。第１被接合体１と第２被接合体２の熱膨張量に差があっても、接合構造中の金属箔層７が変形することによって熱膨張量の差を吸収することができ、第１接合層６と第２接合層８のせん断変形量を低減し、接合強度の低下を防止することができる。【選択図】図１