Balanced solubility product and enthalpies of formation of Nb compounds in 0.09 % oriented silicon steel

Balance solubility products and enthalpy of for- mation for NbC0.75, NbC0.85, NbC0.88, NbC and NbN in oriented silicon steels were calculated and compared quali- tatively. Meanwhile, the mixing enthalpies of these five Nb compounds were calculated based on Miedema Model. The results show that the so...

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Veröffentlicht in:	Rare metals 2013-06, Vol.32 (3), p.318-322
Hauptverfasser:	Li, Hui, Feng, Yun-Li, Zhang, Dan, Song, Meng, Cang, Da-Qiang
Format:	Artikel
Sprache:	eng
Schlagworte:	Balancing Biomaterials Chemistry and Materials Science Energy Enthalpy Materials Engineering Materials Science Mathematical models Metallic Materials Nanoscale Science and Technology NBC NbN Niobium Physical Chemistry Precipitates Precipitation Silicon steels Solubility 产品取向硅钢平衡溶解度形成焓铌化合物
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Zusammenfassung:	Balance solubility products and enthalpy of for- mation for NbC0.75, NbC0.85, NbC0.88, NbC and NbN in oriented silicon steels were calculated and compared quali- tatively. Meanwhile, the mixing enthalpies of these five Nb compounds were calculated based on Miedema Model. The results show that the solubility products of Nb compounds in ferrite and austenite meet the following relationship, NbC0.75 〉 NbC0.85 〉 NbC0.88 〉 NbC 〉 NbN and NbN has the minimum enthalpy of formation. It indicates that NbN easily precipitate out, but it is more difficult for NbC0.75.
ISSN:	1001-0521 1867-7185
DOI:	10.1007/s12598-013-0064-7