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International Journal of Iron and Steel Society of Iran، جلد ۲۰، شماره ۲، صفحات ۱-۹
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| عنوان فارسی |
بررسی خواص و ریزساختار دیرگداز دولومیت پیوند مستقیم با نانوذرات Fe۲O۳ -Cr۲O۳: مطالعه تطبیقی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
Investigation of the Properties and Microstructure of Direct Bonded Dolomite Refractory with Fe2O3 -Cr2O3 nanoparticles: A Comparative Study |
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| چکیده انگلیسی مقاله |
In this research, the properties and microstructure of direct bonded dolomite refractory (having) Iron oxide (Fe2O3) and Chrome oxide (Cr2O3) nanoparticles have been investigated. For this reason 0, 0.5, 1, 1.5, 2, 2.5 and 3 wt. % of Fe2O3 and Cr2O3 nanoparticles have been added to the composition. After forming the samples as cylinders (50*50 mm2), they were fired in an electric furnace at 1650 °C for 3 hr. The measured parameters were bulk density, apparent porosity, hydration resistance and cold crushing strength. Also, microstructural investigation and phase’s analysis of the selected samples was performed by scanning electron microscopy (SEM/EDX) and X-ray diffraction (XRD) devices; respectively. Results showed that the use of Cr2O3 nanoparticles lead to formation of CaCr2O4 and MgCr2O4 phases, which improved the sintering process of the samples thorough the solid state sintering mechanism. Also, the use of Fe2O3 nanoparticles leads to creating CaO.Fe2O3 (CF) and 2CaO.Fe2O3 (C2F) phases which improved the sintering process of the specimen thorough the liquid phase sintering mechanism. Also, it showed that Cr2O3 nanoparticles additive has a greater effect on improving the properties of direct bonded dolomite specimens compared to Fe2O3 nanoparticles additive. |
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| کلیدواژه‌های انگلیسی مقاله |
Dolomite,Refractory,Fe2O3,Cr2O3,nanoparticles |
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| نویسندگان مقاله |
Akbar Davoodi |
شرکت فرآورده های نسوز آذر
Salman Ghasemi |
فرآورده های نسوز آذر
Mohamad Barati |
فرآورده های نسوز آذر
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| نشانی اینترنتی |
https://journal.issiran.com/article_711816_b2cd51316117d11908bd99b8c0f31df1.pdf |
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| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
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