摘要
工业纯铁熔体中分别添加平均粒度为80 nm的TiO2和1.5μm的VC颗粒,熔炼后得到铸锭试样。用非水溶液电解法提取试样中的非金属夹杂物,用SEM及EDS研究夹杂物的形貌、成分及存在状态。结果表明,外加的TiO2及VC颗粒与熔体中的原始夹杂物或杂质元素发生作用,形成了一种包裹TiO2或VC颗粒的复合夹杂物,夹杂物内部的颗粒相界面清晰;MnS夹杂物呈斑点或条带状析出,分布或包覆于VC复合夹杂物颗粒的表面。并从热力学上分析TiO2及VC颗粒在熔体中的稳定性。
Ingot specimens were obtained by the process of adding individual 80 nm TiO2 and 1.5 μm VC superfine particles to molten industrial pure iron. Nomnetallic inclusions were extracted from industrial pure iron ingot sample by the electrolytic method in the nonaqueous solution. Morphology, existent state and components of inclusions were investigated by SEM and EDS. The results showed that additive TiO2 and VC particles usually combine with microelements and molten inclusion form complex inclusions, and existed in the interior of complex inclusions. There were a lot of white punctate and ribbon MnS inclusions at some surface of VC complex inclusions. Stability of additive TiO2 and VC superfine particles in molten is also investigated by thermodynamic calculation.
出处
《钢铁钒钛》
CAS
北大核心
2010年第1期17-23,共7页
Iron Steel Vanadium Titanium
