Nissan Motor Company Limited

Other

Kojiro Kobayashi

Akio Hirose

Kenji Miyamoto

Masayuki Inoue

Shigeyuki Nakagawa

Minoru Kasukawa

Tetsuji Morita

Toshikazu Nanbu

Yoshitaka Uehara

Masanori Yamagiwa

Chika Yamamoto

Sadao Yanagida

Masao Aihara

Nakagawa Shigeyuki

Yanagida Sadao

Aihara Masao

Miyamoto Kenji

Kasukawa Minoru

An inexpensive bonding method is provided to bond materials constituted of an aluminum-based metal to each other at a low temperature and a low pressure while inhibiting deformation, without requiring the use of a flux and minimizing the influence on the base materials and the periphery. Also provided are various bonded parts obtained by the bonding method. An insert material comprising Zn as an element that undergoes a eutectic reaction with Al is interposed between two materials constituted of an aluminum-based metal. The two materials are heated, while being pressed against each other, to a temperature at which the eutectic reaction takes place, thereby generating, at the bonding interface between the two materials, a melt due to the eutectic reaction with some of the Al contained in the base materials and discharging the Al oxide films from the bonding interface together with the melt. Thus, the two materials are bonded.

Method for bonding aluminum-based metals

In joining a magnesium alloy material(first material) and a steel material (second material), a zinc-plated steel plateplated with zinc (metal C) is used as a steel material, Al (metal D) is added to the magnesium alloy material. Next, eutectic melting of Mg and Zn is caused so as to remove a product produced by the eutectic melting with an oxide filmand impurities from a joint interface. Moreover, an Al&#x2014;Mg system intermetallic compound such as AlMgand an Fe&#x2014;Al system intermetallic compound such as FeAlare produced, whereby regenerated surfaces of both materialsandare joined via a compound layercontaining those intermetallic compounds.

Joining method and joint structure of dissimilar metal

According to a metal joining method of the present invention, first and second dissimilar metals are joined together by interposing between the first and second metal materials a third metal material dissimilar to the first and second metal materials and causing eutectic melting at least either at an interface between the first and third metal materials or at an interface between the second and third metal materials.

Dissimilar metal joining method

A method of manufacturing a semiconductor device includes: preparing a semiconductor element having a first metal layer made of first metal on a surface thereof, and a metal substrate made of second metal, the metal substrate having a fourth metal layer made of fourth metal on a surface thereof, and mounting the semiconductor element on the surface thereof; providing metal nanopaste between the first metal layer and the fourth metal layer, the metal nanopaste being formed by dispersing fine particles made of third metal with a mean diameter of 100 nm or less into an organic solvent; and heating, or heating and pressurizing the semiconductor element and the metal substrate between which the metal nanopaste is provided, thereby removing the solvent. Further, each of the first, third and fourth metals is made of any metal of gold, silver, platinum, copper, nickel, chromium, iron, lead, and cobalt, an alloy containing at least one of the metals, or a mixture of the metals or the alloys. By the manufacturing method, it is possible to bond the semiconductor element to the metal substrate favorably.

Semiconductor device and manufacturing method thereof

A golf club adjuster employs a base within which the head of a golf club is immobilized for purposes of adjusting the lie and loft angles of the club. The surface of the base which contacts the sole of the golf club head is inclined relative to the horizontal at an angle of between about 20.degree. and about 40.degree.. The surface of the base which contacts the face of the golf club head is inclined relative to the vertical at an angle of between about 5.degree. and about 30.degree.. When a golf club head is immobilized in a base having such a configuration the neck of the club can be twisted, for adjustment as necessary, to properly define a fulcrum so as to impart spin to a golf ball struck by a player who uses an oval swing.

Golf club adjuster

Growing community of inventors

Ibaraki, Japan

Akio Hirose