Nissan Motor Company Limited

Hitachi Chemical Company, Ltd.

Kobe Steel, Ltd.

Kumamoto University

Takahiro Mibe

Mitsuhiro Inoue

Yukio Takai

Hidetoshi Suzuki

Koichi Akiyama

Takeshi Ito

Masato Yamaguchi

Yoshihito Kawamura

Hideto Murakami

Michiaki Yamasaki

Yoshio Okada

Manabu Ono

Teruyuki Nagayoshi

Koji Itakura

Yasuhiro Hara

Yuuichi Yamada

Hiroki Morozumi

Mamoru Nakata

Hiroyuki Nakanishi

Takeshi Oyama

Hiromichi Matsui

Akihiko Ozawa

Yoshio Jinbo

The present invention provides a magnesium alloy material excellent in high mechanical characteristics without using special manufacturing facilities or processes and a method for manufacturing the magnesium alloy material. The magnesium alloy material is an Mg&#x2014;Zn&#x2014;RE alloy containing Zn as an essential component, at least one of Gd, Tb, and Tm as RE, and the rest including Mg and unavoidable impurities and contains a needle-like precipitate or a board-like precipitate (lengthy precipitate: X-phase=&#x3b2;-phase, &#x3b2;'-phase, and &#x3b2;1-phase).

Magnesium alloy material and method for manufacturing same

There are disclosed a friction material composition which comprises a fibrous material except for asbestos, an inorganic friction regulator, an organic friction regulator and a binder, part of the inorganic friction regulator is &#x3b1; alumina and &#x3b3; alumina in combination, a weight ratio of the &#x3b1; alumina and the &#x3b3; alumina, &#x3b1; alumina:&#x3b3; alumina, is in the range of 1:20 to 1:5, and part or whole part of the binder is a silicon-containing phenol resin, and a friction material obtained by molding the friction material composition under heating and pressure.

Friction material composition and friction material using the same

A brake lining of a vehicular brake device is produced by a friction material which has a characteristic that a friction coefficient of the friction material decreases according to an increase of a sliding speed between the brake lining and a rotational member when the sliding speed is greater than or equal to a predetermined speed during the braking operation, and the friction coefficient is substantially constant when the sliding speed is smaller than the predetermined speed.

Brake lining of brake device

A disc brake pad obtained by using a composition comprising a fibrous base material except for asbestos, a binder and a friction adjusting agent, wherein a silicone modified resin is contained as a part or whole of the binder and zeolite is contained as a part of the friction adjusting agent can prevent a transfer film from contacting with water or remove the water once adsorbed in the transfer film and can lower the sound pressure of creep groan.

Non-asbestos disc brake pad for automobiles

An automotive disc brake assembly comprises a disc rotor made of graphite cast iron with a structure of pearlite, and a brake pad made of organic material. The disc rotor has a first thermal conductivity falling in a range from 0.090 to 0.140 cal/cm.sec..degree.C. The brake pad has second thermal conductivity falling in a range from 0.65 to 3.00 Kcal/mh.degree.C. The second thermal conductivity falls in a range from 0.65 to 0.98 Kcal/mh.degree.C. provided that the second thermal conductivity satisfies the following relationship with the first thermal conductivity:

Friction device

Growing community of inventors

Yamato, Japan

Takahiro Mibe