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在电子手表轴承部分的轴或轴承的表面,包复以优先析出特定结晶面[111]的金或金合金。随后,将此金或金合金膜在氮气中于150～800℃下进行热处理,可改善结晶性能,形成优异润滑性能的轴承。
The surface of the shaft or bearing of the bearing portion of the electronic watch is covered with gold or gold alloy that preferentially deposits a specific crystal face [111]. Subsequently, the gold or gold alloy film is heat-treated at 150 to 800 ° C in nitrogen gas to improve the crystallinity and form a bearing with excellent lubricity.