Abstract

Intermetallic compounds, such as iron aluminides exhibit excellent oxidation and corrosion resistance, as well as metallurgical bonding with excellent adhesion to the substrate. In this work, aluminizing treatments were carried out using the dipping into slurry process to produce iron aluminide coatings on stainless steel substrates. In this process, AISI 304 stainless steel samples were immersed in a slurry consisting of polyvinyl butyral, ethyl alcohol and a powder composed of Al, AlCl₃ and Al₂O₃, dried and then placed in sealed crucibles without further protection. These samples were treated at temperatures of 500 and 650 °C for 2, 4, 6 and 8 h and then air-cooled. Flat and homogeneous layers were obtained over the substrate with increased thickness observed with increasing temperature and treatment time. Considering that the traditional treatments of aluminization by the pack process are carried out at temperatures close to 900 °C and use larger amounts of material, the low temperature treatments used in this work offer potential cost savings.

中文翻译：

---

使用浆料法在低温下在AISI 304不锈钢上生产铝化物层

摘要

金属间化合物（例如铝化铁）表现出出色的抗氧化性和耐腐蚀性，以及与基材之间具有出色附着力的冶金结合。在这项工作中，使用浸入浆料法进行渗铝处理，以在不锈钢基材上生产铝化铁涂层。在此过程中，将AISI 304不锈钢样品浸入由聚乙烯醇缩丁醛，乙醇和Al，AlCl ₃和Al ₂ O ₃组成的粉末组成的浆料中干燥后，将其置于密封的坩埚中，无需进一步保护。将这些样品在500和650°C的温度下处理2、4、6和8小时，然后风冷。随着温度和处理时间的增加，在基板上获得了平坦且均匀的层，其厚度增加。考虑到通过包装工艺进行的传统镀铝处理是在接近900°C的温度下进行的，并且使用了大量的材料，因此这项工作中使用的低温处理可节省成本。