ABSTRACT Soft film corrosion-preventive compounds (CPC) were studied using ASTM B117 accelerated corrosion testing method and a special test specimen. The tested CPCs included a commercial product and homemade CPCs with a generic formulation containing paraffin wax, petrolatum, corrosion inhibitors and surfactants. Carbon steel substrates coated with CPCs containing corrosion inhibitors and surfactants showed little corrosion after 21 days of exposure in an ASTM B117 chamber. However, the carbon steel substrates coated with CPCs containing no inhibitors or surfactants showed severe corrosion after 7 days of exposure. The effect of CPCs on galvanic corrosion prevention was studied using a special test specimen configuration consisting of a primer-coated AA7075-T6 panel coupled with SS316 fasteners. The galvanic currents between the panel and fastener were measured using a zero-resistance ammeter during exposure of the test specimen in the ASTM B117 chamber. The galvanic attack of the panels coated with different CPCs was evaluated.

中文翻译：

---

防腐蚀化合物的基础研究：第三部分——软膜

摘要 使用 ASTM B117 加速腐蚀测试方法和特殊试样对软膜防腐蚀化合物 (CPC) 进行了研究。测试的 CPC 包括商业产品和自制 CPC，其通用配方包含石蜡、凡士林、腐蚀抑制剂和表面活性剂。涂有含腐蚀抑制剂和表面活性剂的 CPC 的碳钢基材在 ASTM B117 室中暴露 21 天后几乎没有腐蚀。然而，涂有不含抑制剂或表面活性剂的 CPC 的碳钢基材在暴露 7 天后表现出严重的腐蚀。使用由涂有底漆的 AA7075-T6 面板和 SS316 紧固件组成的特殊试样配置，研究了 CPC 对防止电偶腐蚀的影响。在 ASTM B117 室中的测试样品暴露期间，使用零电阻电流表测量面板和紧固件之间的电流。评估了涂有不同 CPC 的面板的电流侵蚀。