Vapor phase corrosion protection is an important factor to consider when adding corrosion inhibitors to hydraulic fluids. Traditional corrosion inhibitors typically protect only the metals directly in contact with the corrosion inhibiting fluid. This ignores the vulnerable metal surfaces in the surrounding void space above the level of the hydraulic fluid.
在涉及上载，存储或发货的情况下，保护这些区域尤其重要，因为通常首选液体至少部分排水。为了使用仅接触式腐蚀抑制剂的最大保护，必须完全填充液压液库等区域，以抑制液压液。但是，这种方法可能是昂贵的，并且对于不可避免地保留在水箱顶部的空隙中可能仍然没有完全有效。
更具成本效益和成功的选择是将蒸气相腐蚀抑制剂（VPCI）纳入需要空隙空间保护的液压流体。这些腐蚀抑制剂保护与流体上方的流体和金属表面接触的金属。使用时，通常可以同时减少储存或发货期间所需的液压流体量。这样可以节省流体使用情况，并防止存储后繁琐的排水，清理或去除生锈，从而使保护更加容易，更具成本效益。
找出液压液是否包括蒸气相保护的一种方法是根据ASTM D-5534测试流体，“液压液的蒸气相锈蚀特性的标准测试方法”。
As part of its ISO 17025 accreditation, Cortec® Laboratories is certified to perform this testing, which is a pass/fail evaluation of vapor corrosion inhibiting effectiveness for both water-based and oil-based hydraulic fluids. The test consists of exposing a steel disc to water and hydraulic fluid vapor in a beaker at an elevated temperature for several hours. At the end of the test, the steel disc is examined for rust to determine if the product either passes or fails.
As the only ISO 17025 Accredited lab in the industry, Cortec® Laboratories is a leader in providing corrosion testing services that help end users select the best product for their applications. Through decades of research, testing, and practical experience, Cortec® has amassed a wealth of corrosion control knowledge, as evidenced by the industry’s largest portfolio of 63 patents issued over the course of 40 years. Cortec® is eager to share this expertise by helping end users find innovative solutions in their search for effective corrosion control.
Cortec®建议在存储或运输含有液压油的设备之前，考虑液压流体的蒸气相保护能力。2020欧洲杯下注官网通过选择具有蒸气相腐蚀抑制剂的液压液，用户将能够以更具成本效益，实用的方式提供更大的保护，以防止腐蚀。