Research of electrical conductivity of synthetic powders

• Autorzy: Sorek A. , Popielska-Ostrowska A. , Niesler M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: This paper describes the electrical conductivity of liquid phase powders and laboratory research of electrical conductivity of synthetic powders. Design/methodology/approach: Research of electrical conductivity of liquid synthetic slag was performed using voltmeter-ammeter method on the specially designed research stand. Findings: The electrical conductivity of slag depends on the chemical composition of the liquid slag, which is related to their ionic structure. The electrical conductivity is determined by the dimensions of the ions, their number and mobility as a function of the viscosity of the liquid in which they are. Research limitations/implications: Laboratory studies of electrical conductivity of liquid powders should be the basis for further studies crystallizer powders used in continuous casting conditions. Practical implications: The chemical composition of powders (ion) can cause changes in the lubrication conditions in the near-meniscus zone in continuous casting mold and can influence on the surface quality on the continuous casting ingots. Originality/value: This paper presents the result of research of electrical conductivity CaO-SiO2-Al2O2-FeO-MgO-K2O powders.

Słowa kluczowe

EN

multifunctional materials; electrical propeties; casting; molten slag; electrical conductivity

PL

materiały wielofunkcyjne; właściwości elektryczne; odlewanie; stopiony żużel; konduktywność elektryczna

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2012
• Tom: Vol. 57, nr 2
• Strony: 53--56

Twórcy

autor

Sorek A.

• Institute for Ferrous Metallurgy, ul. K. Miarki, 12-14, 44-100 Gliwice, Poland

autor

Popielska-Ostrowska A.

autor

Niesler M.

Bibliografia

• [1] S. Jadźwiński, Thermodynamics and kinetics of metallurgical processes, Śląsk, 1966 (in Polish).
• [2] O.A. Jesin, P.W. Gield, Fiziczieskaja chimia piromietałłurgi-czieskich praciessow, cz. II. Mietałłurgia, 1966.
• [3] Q. Jiao, N.J. Themelis, Correlations of electrical conductivity to slag composition and temperature, Metallurgical and Materials Transactions B19 (1988) 133-140.
• [4] S. Holewiński, Blast furnace slag, Śląsk, Katowice, 1965 (in Polish).
• [5] J.A. Onajew, Fizyko-chemiczieskije swojstwa szlaków w cwietnoj mietałurgii. Nauka, Alma-Ata, 1972.
• [6] B. Sikora, M. Zieliński, The density, surface tension, viscosity and electrical conductivity of molten systems of CaO-Al2O3-CaF2 slag, Metallurgist 9 (1974) 433-437 (in Polish).
• [7] S. Hara, H. Hashimoto, K. Ogino, Electrical Conductivity of molten slag for electro-slag re melting, Transactions ISIJ 23 (1983) 1053-1058.
• [8] A. Kondratiev, J. Evgueni, A quasi-chemical viscosity model for fully liquid slags in the Al 2 O 3 -CaO-‘FeO’-SiO2 System, Metallurgical and Materials Transactions B 36 (2005) 623-638.
• [9] W. Chiho, X. Shunhua, Electrical conductivity of molten slags of CaF 2 +Al 2 O3 and CaF 2 + Al2O3 +CaO systems for ESR, ISIJ International 33/2 (1993) 239-244.
• [10] A. Staronka, A. Cyuńczyk, Methods of measurement of electrical conductivity and transfer numbers in metallurgical slags, Metallurgist 7-8 (1966) 338-343 (in Polish).
• [11] Z. Kudliński, B. Sikora, A. Sorek, Research of electrical properties of liquid phases of casting powders, Proceedings of the International Scientific Conference “Teorie a Praxe Vyroby a Zpracowani Oceli”, Roznov pod Radhostem, Czech Republic, 2008, 90-96.