一、前言为了提高缓蚀剂的防锈效果,应控制与金属接触介质的pH值。一般而言,对黑色金属应控制在偏碱性范围;对有色金属应控制在偏酸性范围。金属锌属于两性金属,就有其特殊性。迄今,国内生产的防锈油一般都不单独列出对锌的缓蚀指标,而实际使用时应重视这方面的问题。特别是对组合零件,往往含有包括锌在内的多种金属。根据日本JIS规格要求,对指纹去除型防锈油和 First, the foreword In order to improve the antirust effect of corrosion inhibitors, should control the pH of the media in contact with the metal. In general, the black metal should be controlled in the alkaline range; for non-ferrous metals should be controlled in the partial acid range. Metallic zinc belongs to amphoteric metals, it has its own particularity. So far, domestic production of anti-rust oil are generally not listed separately for zinc corrosion indicators, and the actual use should pay attention to this issue. Especially for composite parts, often contain a variety of metals, including zinc. According to the Japanese JIS specifications, anti-fingerprint fingerprints and oil removal