Nippon Steel Corporation

Tsutomu Ozawa

Yuichi Sato

Toshio Yamada

Mikio Yamanaka

Katsuhiro Minamida

Masayuki Tendo

Hironobu Kawasaki

Tomohiko Hayashi

Susumu Takemura

Keiichi Omura

An iron base amorphous alloy strip having a sheet thickness of from 50 to 150 .mu.m and a sheet width of at least 20 mm. The strip is produced by a single-roll cooling process and has a fracture strain of 0.01 or more.

Amorphous alloy strip having a large thickness

Amorphous alloy strips having a large thickness and method for producing

An Al-containing stainless steel is rapidly solidified from a molten state to produce a ribbon. In catalyst carrier for the exhaust gas of automobile, the Al is utilized for the formation of .alpha.-Al.sub.2 O.sub.3 whiskers, which carry and rigidly bond the .gamma.-Al.sub.2 O.sub.3 powder to the ribbon, as the direct carriers of noble metals.

Stainless steel ribbon for use as a catalyst carrier for automobile

In the method for producing a round metal wire from a melt by using a cooling substrate, the cooling substrate is provided with a groove and melt streams are ejected toward the groove and successively impinge upon a wire while it is in an unsolidified state.

Method for producing a metal wire

A thin metal strip excellent in both shape and quality is produced by a continuous casting process which comprises the steps of jetting a molten metal through a nozzle onto the surface of a moving chill body maintained at a pertinent temperature range by irradiating a high density energy at a place positioned at the rear of the nozzle, and subjecting the molten metal to quenching so as to effect solidification.

Method for continuous casting of metal strip

The present invention relates to a magnetic amorphous alloy sheet having an improved insulating property and improved corrosion resistance. The present invention aims to provide a film which is used to cover the magnetic amorphous alloy sheet, thereby improving its corrosion resistance and increasing the layer insulation resistance, without impairing the magnetic properties. The film according to the present invention has a thickness of up to 1 .mu.m and comprises a chromium compound which comprises hydrated chromium oxide. The film may additionally comprises metallic chromium. The magnetic amorphous alloy according to the present invention is suitable for use as a transformer core achieving a high building factor.

Magnetic amorphous alloy sheet having a film thereon

Amorphous alloys have attractive properties which make possible their use as cores for transformers, these properties being a low watt loss, which is due to an inherently low magnetic anisotropy, and a high resistivity. However, one of the most serious disadvantages of amorphous alloys is the low thermal stability of the magnetic properties and the fact that their magnetic properties, such as saturation flux density (Bs), decrease at the temperature of the energized or excited core. In order to eliminate the disadvantages of the known amorphous alloys, the present invention proposes an amorphous alloy having a composition of Fe.sub.74-80 Si.sub.8-19 B.sub.6-13 C.sub.0-3.5. This alloy is specifically adapted so that it can be used as a transformer core which can be energized or excited at a high flux density.

Growing community of inventors

Kawasaki, Japan

Tsutomu Ozawa