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Interfacial Interactions Between Inclusions Comprising TiO 2 or TiN and the Mold Flux During the Casting of Titanium-Stabilized Stainless Steel
Metallurgical and Materials Transactions B ( IF 1.952 ) Pub Date : 2019-12-04 , DOI: 10.1007/s11663-019-01746-2
Lejun Zhou, Zihang Pan, Wanlin Wang, Junyu Chen, Liwen Xue, Tongsheng Zhang, Lei Zhang

Interfacial properties play a key role in determining the solubility of solids in liquids for both low- and high-temperature processes. In this study, the interfacial interactions between inclusions comprising TiO2 or TiN and the mold flux were investigated. The results of sessile drop tests show that the wettability of the mold flux on the TiO2 substrate was better than that on the TiN substrate when the temperature was below 1503 K. However, the contact angle on the TiN substrate decreased more than that on the TiO2 substrate when the temperature was above 1503 K due to the enhancement of the interfacial reaction. The thermodynamic calculations suggest that the reactions of TiN with O2 and SiO2 resulted in a bubbling phenomenon during the TiN sessile drop test. The scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) results show that the final products of the interfacial interaction between the mold flux and the TiO2 substrate comprised perovskites, whereas those for the TiN substrate comprised perovskites and SiTi.
更新日期:2019-12-05

 

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