Effect of Selective Oxidation and Interfacial Reactions on the Reactive Wetting of Advanced Steels by the Continuous Galvanizing Bath

选择性氧化和界面反应对连续镀锌浴反应润湿高级钢的影响

• 批准号: 298973-2013
• 负责人: McDermid, Joseph
• 金额: $ 2.11万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=594925
• 关键词: Effect; Selective; Oxidation; Interfacial; Reactions

The use of advanced high strength steels in automotive structures is an enabling technology for vehicle weight and emissions reductions, including large-scale vehicle electrification, while maintaining passenger safety. In the case of advanced steels, this weight reduction is achieved using thinner component cross sections, which necessitates that they be protected from corrosion damage in order to maintain their properties and satisfy consumer longevity demands. The continuous galvanizing process, in which steels are coated with a thin sacrificial Zn coating, is the most cost-effective process for achieving this aim. However, the alloying elements (e.g. manganese, silicon and chromium) used to produce the high strengths and other desirable properties of advanced steels also selectively oxidize in the continuous galvanizing process, creating surfaces to which the zinc cannot adhere via a process known as reactive wetting. Fortunately, it has been found by producers and other researchers that proper manipulation of selected galvanizing process variables and alloy chemistry can produce surfaces for which reactive wetting is promoted, resulting in high quality galvanized coatings.

在汽车结构中使用先进的高强度钢是一种能够减轻车辆重量和减少排放的技术，包括大规模车辆电气化，同时保持乘客安全。在先进钢材的情况下，这种重量减轻是通过使用更薄的部件截面来实现的，这就需要保护它们免受腐蚀损害，以保持其性能并满足消费者的使用寿命要求。连续镀锌工艺是实现这一目标的最经济有效的工艺。在连续镀锌工艺中，钢被涂上一层薄薄的牺牲锌涂层。然而，用于生产高强度和其他理想性能的高级钢的合金元素（例如锰，硅和铬）也在连续镀锌过程中选择性氧化，通过称为反应性润湿的过程产生锌不能粘附的表面。幸运的是，生产商和其他研究人员发现，适当地操纵选定的镀锌过程变量和合金化学可以产生促进反应性润湿的表面，从而产生高质量的镀锌涂层。