Gießerei-Institut der TU Bergakademie Freiberg, Freiberg, Germany.
AGH-University of Science and Technology in Krakow, Krakow, Poland.
Sci Rep. 2023 May 22;13(1):8294. doi: 10.1038/s41598-023-34761-0.
The research focused on the influence of cerium on the chemical composition and morphology of non-metallic inclusions in pre-oxidised steel to which Al, Ca, and Ce was added in different amount and order. Calculations were carried out using our own computer program. The simulation results obtained according to two calculation models helped identify precipitates from the Ce-O-S system. The possibility of CeN formation was also identified. The trace amounts of these inclusions were also found in the results. Consideration of the physicochemical phenomena at the boundary, as well as the interfacial partitioning and the sulfur partition coefficient, influences the favourable chemical composition of the inclusions, limiting it mainly to compounds from the AlO, CeO and CaS systems. It was found that the addition of Ce before Ca causes the elimination of MnS precipitates and Ca-containing inclusions in the steel.
研究集中在铈对预氧化钢中添加不同数量和顺序的 Al、Ca 和 Ce 后非金属夹杂物化学成分和形态的影响。使用我们自己的计算机程序进行了计算。根据两个计算模型得到的模拟结果有助于从 Ce-O-S 体系中识别出沉淀物。还确定了 CeN 形成的可能性。这些夹杂物的痕量也在结果中发现。边界处物理化学现象的考虑，以及界面分配和硫分配系数，影响夹杂物的有利化学成分，主要限制在 AlO、CeO 和 CaS 体系的化合物。结果发现，在添加 Ca 之前添加 Ce 会导致钢中 MnS 沉淀物和含 Ca 夹杂物的消除。
