Nissan Motor Company Limited

Masao Aihara

Kenji Miyamoto

Hiroshi Sakurai

Munekatsu Shimada

Shigeyuki Nakagawa

Yoshio Kawashita

Minoru Kasukawa

Akio Hirose

Toshimitsu Matsuoka

Kiyohiro Uramoto

Sadao Yanagida

Mitsuaki Fujita

Masaharu Ooshima

A magnetostrictive stress sensor () includes: a magnetic member {, ()} having a magnetostriction; a permanent magnet () adjacent to the magnetic member; a magnetic sensor (A,B) for detecting a leak magnetic flux on a side opposite to the permanent magnet with respect to the magnetic member, wherein the leak magnetic flux changes according to a stress acting on the magnetic member and the magnetic sensor detects the change of the leak magnetic flux, to thereby detect the stress acting on the magnetic member, and a direction (A,A) of the stress acting on the magnetic member is substantially orthogonal to a magnetizing direction (A) of the permanent magnet.

Magnetostrictive stress sensor

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

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Yokosuka, Japan

Masao Aihara