Chemistry: electrical and wave energy – Processes and products
Patent
1989-01-23
1989-07-11
Niebling, John F.
Chemistry: electrical and wave energy
Processes and products
148111, 148113, 204 27, 204 29, 204 34, 204 371, H01F 104
Patent
active
048469394
ABSTRACT:
The heat resistant subdivision of magnetic domains of a grain-oriented electrical steel sheet for improving the watt loss characterized by forming intruders therein is improved by pickling the steel sheet prior to the electroplating of the intrudable means. The partly exposed steel sheets are pickled by HNO.sub.3, H.sub.2 SO.sub.4 containing Fe.sup.3+, HCl containing Fe.sup.3+, and/or HBF.sub.4.
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Metal Finishing Guidebook and Directory for 1978, Metals and Plastics Publications, Inc., Hackensack, N.J., pp. 160-161, 166-167.
Higuchi Seijun
Izaki Teruaki
Tanaka Osamu
Yoshida Makoto
Leader William T.
Niebling John F.
Nippon Steel Corporation
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