Titanium molybdenum alloy superior in resistance to pitting corrosion in
bromide ion environment
    5.
    发明授权
    Titanium molybdenum alloy superior in resistance to pitting corrosion in bromide ion environment 失效
    钛钼合金在溴离子环境中具有优异的耐点腐蚀性

    公开(公告)号:US4634478A

    公开(公告)日:1987-01-06

    申请号:US764745

    申请日:1985-08-12

    IPC分类号: C22C14/00

    CPC分类号: C22C14/00

    摘要: There is provided a Ti-Mo alloy containing 0.2 to 3.0 wt % of molybdenum, with the balance being substantially titanium, characterized in that the amount of Fe in the impurities is not greater than 0.1% and the amount of O.sub.2 in the impurities is in the range that satisfies the following equation on the basis of the amount of Mo (%).O.sub.2 (%).ltoreq.9/35-1/28.multidot.Mo (%)said titanium alloy being highly resistant to pitting corrosion in an environment where there are bromide ions and being superior in formability. Said alloy undergoes heating at a temperature higher than 700.degree. C. and lower than the .alpha.-transformation point and then cooling at a rate of 500.degree. C./min or less, whereby said alloy is rendered malleable.

    摘要翻译: 提供了含有0.2〜3.0重量%钼的Ti-Mo合金,余量基本上为钛,其特征在于,杂质中的Fe量不大于0.1%,杂质中的O 2量在 基于Mo量(%)满足下式的范围。 所述钛合金在具有溴离子并且成形性优异的环境中具有高耐点腐蚀性的氧(%)

    Method for protecting the inner surface of a copper alloy condenser tube
from corrosion
    10.
    发明授权
    Method for protecting the inner surface of a copper alloy condenser tube from corrosion 失效
    保护铜合金冷凝管内表面免受腐蚀的方法

    公开(公告)号:US4369073A

    公开(公告)日:1983-01-18

    申请号:US256121

    申请日:1981-04-21

    CPC分类号: F28F19/06

    摘要: A thin corrosion protective film of an iron oxide can be formed on the inner surface of a condenser tube made of a copper alloy by first applying on the inner surface a thin layer of an acidic suspension containing iron powder and then exposing the thus-coated inner surface to an atmosphere of an oxidizing gas. The above method can be carried out in a relatively short period of time and also in a relatively simple fashion. The resultant protective film is uniform and hardly reduces the thermal conductivity of the condenser tube, thus ideal as a protective film for condenser tubes of a heat exchanger.

    摘要翻译: 可以在由铜合金制成的冷凝管的内表面上形成氧化铁的薄的腐蚀保护膜,首先在内表面上涂覆含有铁粉的酸性悬浮液的薄层,然后将如此涂覆的内部 表面到氧化气体的气氛。 上述方法可以在相当短的时间段内进行,也可以以相对简单的方式进行。 所得到的保护膜是均匀的,几乎不降低冷凝管的导热性,因此作为热交换器的冷凝管的保护膜是理想的。