Method of internally oxidizing Ag-Sn alloy contact material

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United States of America Patent

PATENT NO 4472211
SERIAL NO

06380073

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Abstract

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Rather high temperature raise of internally oxidized Ag-Sn alloy contact materials due to a high contact resistance inherent to such materials, is eliminated. The high contact resistance which is caused by high concentration or supersaturation of metal oxides including tin oxides about contact surfaces, is avoided by having solute metals sublimated, reduced or extracted about the contact surface before the internal oxidation thereof. Sublimation and other treatments may be made after having the materials subjected to internal oxidation.

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Patent Owner(s)

Patent OwnerAddress
CHUGAI DENKI KOGYO KABUSHIKI-KAISHA A CORP OF JAPAN13/3 NIHONBASHI-KAYABACHO 2-CHOME CHUO-KU TOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Shibata, Akira Yokohama, JP 152 1140

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