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Interactions of CaO with pure Mg and Mg-Ca alloys—an in situ synchrotron radiation diffraction study

التفاصيل البيبلوغرافية
العنوان: Interactions of CaO with pure Mg and Mg-Ca alloys—an in situ synchrotron radiation diffraction study
المؤلفون: B Wiese, C L Mendis, D Tolnai, N Hort
المصدر: JPhys Materials, Vol 7, Iss 3, p 035008 (2024)
بيانات النشر: IOP Publishing, 2024.
سنة النشر: 2024
المجموعة: LCC:Materials of engineering and construction. Mechanics of materials
LCC:Physics
مصطلحات موضوعية: Mg-based alloys, in situ, synchrotron diffraction, Mg-Ca-O system, Eco-Mg, Materials of engineering and construction. Mechanics of materials, TA401-492, Physics, QC1-999
الوصف: CaO additions are used as an inexpensive replacement for Ca in Mg alloys. CaO dissociation in Mg has been reported in literature without a clear mechanism as to why this occurs. In situ synchrotron radiation diffraction investigation of the melting and solidification of Mg with CaO shows, that the stability of CaO was overestimated in Mg melts compared with MgO. The experiments that were performed on the Mg-20CaO and Mg- x Ca-6CaO ( x = 6 and 16 wt.%) alloys, show the dissociation and formation of various phases during melting and solidification. The results indicate that Mg can reduce CaO even in the solid state, which is the opposite of that proposed by the Ellingham diagrams for stoichiometric reaction. Phase formations during the in situ experiment are compared with published thermodynamic calculations for the interaction between Mg-Ca alloys and oxides.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2515-7639
Relation: https://doaj.org/toc/2515-7639
DOI: 10.1088/2515-7639/ad3fe9
URL الوصول: https://doaj.org/article/95870e68192c4a07914eafb1c9138af0
رقم الأكسشن: edsdoj.95870e68192c4a07914eafb1c9138af0
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:25157639
DOI:10.1088/2515-7639/ad3fe9