热喷涂锌铝覆盖层在油罐防腐中的应用

热喷涂技术应用于油罐防腐具有防腐效果好，使用寿命长、维修费用低等特点。从热喷涂锌铝覆盖层的防护机理、油罐喷涂锌铝覆盖层的设计、材料的选择及喷涂工艺和方法等方面进行了详细的讨论。由于锌铝覆盖层的防腐机理不同，使用范围也有很大差别。在干燥的或潮湿含二氧化碳的大气中，喷涂锌覆盖层效果较好；而在污染工业大气和海洋大气环境中宜选用喷涂铝覆盖层。提出锌铝复合覆盖层保持了锌、铝各自的优点，改善原来的不足，具有更

The Application of Thermo-Spraying of Aluminum and Zinc Coating to the An- ti-Corrosion of Oil Tanks

The application of thermo-spraying to anti-corrosion of oil tanks has some distinguished advantages such as good anti-corrosive effect,long period of service and low cost of upkeep. In the paper,the anti-corrosive mechanism,the design of coating,the selection of coating material,technology and process of thermo-spraying of aluminum and zinc coating applied to oil tanks have been recommended and analyzed in details. Because of the different anti-corrosive mechanism of aluminum and zinc coating,the range of application of it differs greatly. In dry or moist air with carbon dioxide,zinc coating is more effective,while in polluted and marine environment aluminum coating is better. The composite coating of aluminum and zinc that keeps the advantages of both aluminum and zinc and improves the shortcomings of them respectively has an outstanding protective effect compared with aluminum or zinc coatings. Yet,it requires future development and improvement.