当前位置: X-MOL 学术Metall. Mater. Trans. B. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Thermal Properties of Ultra- and Nanodispersed Core–Shell Structures of Ti(Mo)C and Ti(Mo)C-Co Obtained During Plasma-Chemical Synthesis by Plasma Recondensation Scheme
Metallurgical and Materials Transactions B ( IF 3 ) Pub Date : 2020-04-03 , DOI: 10.1007/s11663-020-01831-x
Yuliya Avdeeva , Irina Luzhkova , Alexey Ermakov , Rina Samigullina , Emma Vovkotrub , Edward Dobrinsky , Yuri Zainulin

In this work, the thermal studies of ultrafine and nanocrystalline core–shell structures of Ti(Mo)C and Ti(Mo)C-Co formed in the process of plasma chemical synthesis according to the plasma condensation scheme in a low-temperature nitrogen plasma were performed. The oxidation processes of all phase components in the core–shell structures, determined during the high-resolution transmission electron microscopy studies, are presented as experimental results. The composition of nanocompositions before and after oxidation was recorded by X-ray methods. This allowed us to determine the sequence of interaction of the phase components of the core–shell structures with oxygen present in cylinders with argon, including carbon oxidation. In addition to the high-resolution transmission electron microscopy methods, the presence of carbon on the surface of particles was also confirmed by Raman spectroscopy. The use of these analysis techniques in combination with the results of derivatography and thermogravimetry made it possible to formulate the oxidation mechanisms of the core–shell structures of Ti(Mo)C and Ti(Mo)C-Co.

中文翻译:

通过等离子体再缩合方案在等离子体化学合成过程中获得的 Ti(Mo)C 和 Ti(Mo)C-Co 的超和纳米分散核壳结构的热性能

在这项工作中,根据低温氮等离子体中的等离子体冷凝方案,对在等离子体化学合成过程中形成的 Ti(Mo)C 和 Ti(Mo)C-Co 的超细和纳米晶核壳结构进行了热研究。进行了。在高分辨率透射电子显微镜研究期间确定的核壳结构中所有相组分的氧化过程作为实验结果呈现。通过X射线方法记录氧化前后纳米组合物的组成。这使我们能够确定核壳结构的相成分与圆柱体中存在的氧气相互作用的顺序,包括碳氧化。除了高分辨率透射电子显微镜方法,拉曼光谱也证实了颗粒表面存在碳。将这些分析技术与衍生分析和热重分析的结果结合使用,可以制定 Ti(Mo)C 和 Ti(Mo)C-Co 核壳结构的氧化机制。
更新日期:2020-04-03
down
wechat
bug