Development of corrosion resistant thermal diffusion surface engineering for high-temperature recovery boilers

Endurance Technologies Inc.面临的直接行业问题是，(ETI)和阿尔伯塔大学希望解决的赞助下，这项工程的资助是耐腐蚀涂料的发展，用于高温回收锅炉暴露于熔盐。特别是，行业发起人和申请人将使用热扩散工艺，如硼化和铝化，以制造铁硼化物（硼化工艺）和铝化物，如铁铝化物、镍铝化物和铬铝化物。这些涂层预期在回收锅炉中通常存在的高温下具有高耐腐蚀性。这项初步研究的新奇在于将涂层暴露于熔盐腐蚀，这也是回收锅炉的典型特征。因此，对于具有更复杂结构的涂层以及涉及一些保护层的涂层，将确定这些新型涂层系统的性能和可行性。

The immediate industry problem that Endurance Technologies Inc. (ETI) and the University of Alberta wish to resolve under the auspices of this Engage Grant is the development of corrosion resistant coatings for use in high-temperature recovery boilers exposed to molten salts. In particular, the industry sponsor and the applicant will use thermal diffusion processes such as boronizing and aluminizing to fabricate iron borides (boronizing process) and aluminides such as iron-, nickel-, and chrome-aluminides. These coatings are expected to have high corrosion resistance at the high temperatures that are typically found in recovery boilers. The novelty of this proposed preliminary study will be the exposure of the coatings to molten salt corrosion, a feature that is also typical in recovery boilers. Thus, with coatings with more complex architectures and where a few protective layers are involved, the performance and feasibility of these novel coating systems will be determined.