Title:
GRAIN-ORIENTED SILICON STEEL SHEET LOW IN IRON LOSS
Document Type and Number:
Japanese Patent JP3178959
Kind Code:
B2
Abstract:
PURPOSE: To produce a grain-oriented silicon steel sheet improved in iron loss by forming a chemically stable coating film imparting a high tension to the sheet on the surface of the sheet.
CONSTITUTION: A composite coating film contg. an amorphous phase consisting essentially of aluminum borate and contg. phosphorus as a component and/or aluminum phosphate is formed on the surface of a grain-oriented silicon steel sheet to lower iron loss. Further, an aluminum borate crystal, AlxByO3(x+y)/2 (0.1≤-(y/x)≤5), especially effective in imparting tension is presented, and the aluminum borate content of the entire coating film is controlled to 30-95%.
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Inventors:
Takao Kanai
Fumiaki Takahashi
Fumiaki Takahashi
Application Number:
JP7361594A
Publication Date:
June 25, 2001
Filing Date:
April 12, 1994
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
C23C22/00; (IPC1-7): C23C22/00
Domestic Patent References:
| JP54143737A | ||||
| JP3207868A | ||||
| JP4227530B1 | ||||
| JP4618603B1 |
Attorney, Agent or Firm:
Tachio Chanogi (1 outside)