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现行 ASTM B480-88(2022)
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Standard Guide for Preparation of Magnesium and Magnesium Alloys for Electroplating 电镀用镁和镁合金制备的标准指南
发布日期: 2022-05-01
1.1 本指南描述了镁和镁合金电镀的两种工艺:直接化学镀镍和浸锌。一些用户报告说,直接化学镀镍程序产生的附着力不如浸锌。 1.2 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.3 本标准并非旨在解决与其使用相关的所有安全问题(如有)。本标准的用户有责任在使用前制定适当的安全、健康和环境实践,并确定监管限制的适用性。 有关具体的危险说明,请参阅 5.1.1 和 5.2.9.2 . 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒(TBT)委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 3.1 金属电镀在镁上有多种用途:例如可焊性、射频接地、密封、耐磨性、耐腐蚀性、外观和导电性。 由于镁表面覆盖着一层自然生成的氧化膜,因此不能使用常规的自动催化或电解电镀金属制备程序。
1.1 This guide describes two processes used for plating on magnesium and magnesium alloys: direct electroless nickel plating and zinc immersion. Some users report that the direct electroless nickel procedure does not produce quite as high a level of adhesion as zinc immersion. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see 5.1.1 and 5.2.9.2 . 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 3.1 Metals are electroplated on magnesium for various purposes: solderability, RF grounding, hermetic sealing, wear resistance, corrosion resistance, appearance, and electrical conductivity, for example. Because magnesium is covered with a naturally occurring oxide film, usual procedures for the preparation of metals for autocatalytic or electrolytic plating cannot be used.
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归口单位: B08.02
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