Inclusion Characteristics in Steel with CeO2 Nanoparticle Addition
Inclusion Characteristics in Steel with CeO2 Nanoparticle Addition
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DOI：
10.3390/met12111994
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发表时间：
2022-11
期刊：
影响因子：
2.9
通讯作者：
H. Kong;Xiang Cheng;Shou-lin Huang;Y. Qiu
中科院分区：
文献类型：
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作者：
H. Kong;Xiang Cheng;Shou-lin Huang;Y. Qiu
铈氧化物在氧化物冶金中的应用受到了广泛的关注，但到目前为止，直接向钢液中加入CeO2生成铈氧化物的情况还没有出现。本文将CeO2和Si纳米颗粒混合添加到钢液中。微米级含铈氧化物的生成证实了其添加的有效性。这可能是由于CeO2与[Al]之间的反应性以及Si粉的辅助作用改善了CeO2与钢液之间的润湿性。因此，当CeO2的量保持恒定时，当增加Si的添加量时，其添加产率应该增加。这通过含Ce氧化物占总氧化物的较大百分比和归一化后含Ce氧化物中Ce的较大平均含量来验证。与空白样品相比，CeO2改性后样品中氧化物颗粒细化，分散均匀性提高。这种比较表明了氧化物冶金中外部添加法的有效性。
The application of Ce oxides in oxide metallurgy has received extensive attention, but until now, the direct adding of CeO2 into molten steel to generate Ce oxides has not occurred. In this paper, a mixture of CeO2 and Si nanoparticles were added into molten steel. The resultant formation of micrometer scale Ce-bearing oxides confirmed its adding validity. This behavior may be interpreted as the reactivity between CeO2 and [Al], and the improved wettability between CeO2 and molten steel with the assistance of Si powder. Thus, when the quantity of CeO2 is kept constant, its added yield should increase when increasing the added quantity of Si. This was verified by the larger percentage of Ce-bearing oxides of the total oxides and the greater average content of Ce in Ce-bearing oxides after normalization. Moreover, compared with the blank sample, statistical results indicated that the oxides in CeO2-modified samples were refined, and their dispersion homogeneity was enhanced. This comparison indicates the effectiveness of the external adding method in oxide metallurgy.