Corrosion by Chloride Deicers on Highway Maintenance Equipment Renewed Perspective and Laboratory Investigation
Corrosion by Chloride Deicers on Highway Maintenance Equipment Renewed Perspective and Laboratory Investigation
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DOI：
10.3141/2361-13
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发表时间：
2013-01-01
影响因子：
1.7
通讯作者：
Shi, Xianming
中科院分区：
文献类型：
--
作者：
Li, Yongxin;Fang, Yida;Shi, Xianming
这项工作旨在确定和评估可实施的最佳实践，以最大限度地减少冬季应用设备和车辆上氯化物除冰器的腐蚀。确定的实践包括设计改进、维护实践、防腐涂层、腐蚀抑制剂、除盐剂等。我们开展了一项全国性的调查，以了解目前对车辆和设备的除冰器腐蚀成本的估计，确定氯化物除冰器腐蚀问题，并确定管理该问题的最佳做法或产品。对于那些将除冰器腐蚀作为一个重大问题报告给设备的机构来说，目前与除冰器接触有关的腐蚀管理和腐蚀风险的总成本估计平均每年分别为106万美元和1405万美元。平均而言，接触除冰机会导致六个方面的风险：设备价值折旧17.3%，设备停机时间增加8.5%，设备可靠性降低11.9%，设备使用寿命减少17.3%，过早维修和更换增加19.6%，设备故障部件安全风险增加1.5%。根据用户体验，调查确定了四种防腐涂层产品、四种喷涂缓蚀剂和六种除盐剂为最佳产品。随后，进行了筛选试验和为期2周的电化学阻抗谱测试，以评估产品在减少氯化镁溶液对碳钢的腐蚀作用方面的有效性。在实验条件下，确定了性能最佳的涂层（Rust Bullet）、抑制剂（已知）和除盐剂（HoldTight和ChlorRid）。它们在防腐方面都表现出优异的性能。
This work aimed to identify and evaluate best practices that could be implemented to minimize the corrosion of chloride deicers on winter application equipment and vehicles. Identified practices included design improvements, maintenance practices, anticorrosion coatings, corrosion inhibitors, salt removers, and so on. A nationwide survey was conducted to capture current knowledge about estimating the deicer corrosion costs to vehicles and equipment, defining the chloride deicer corrosion problem, and identifying best practices or products for managing the problem. For agencies that report deicer corrosion to equipment as a significant issue, the total cost of current corrosion management and corrosion risks related to deicer exposure was estimated to average $1.06 million and $14.05 million per year, respectively. On average, deicer exposure leads to risks in six areas: 17.3% depreciation in equipment value, 8.5% increase in equipment downtime, 11.9% reduction in equipment reliability, 17.3% reduction in equipment service life, 19.6% increase in premature repair and replacement, and 1.5% risk in safety from faulty parts on equipment. The survey identified four anticorrosion coating products, four spray-on corrosion inhibitors, and six salt removers as best products based on user experience. Subsequently, a screening test and a 2-week test with electrochemical impedance spectroscopy measurements were conducted to assess the effectiveness of the products in reducing the corrosion effect of magnesium chloride solution to carbon steel. Under the investigated conditions, the best-performing coating (Rust Bullet), inhibitor (Krown), and salt removers (HoldTight and ChlorRid) were identified. They all showed outstanding performance in corrosion protection.