Calculation of phase equilibrium in Fe-B-C-O system

• Autorzy: Lenik K. , Pashechko M. , Kondyr A. , Bohun L. , Lenik Z.
• Języki publikacji: EN

Abstrakty

EN

Purpose: This paper presents calculation of phase equilibrium in Fe-B-C-O system. Design/methodology/approach: The typical phase equilibrium diagrams do not always provide useful information on this problem, especially for polycomponent systems. Instead of this, the methods for phase equilibrium calculations, the necessary data about thermodynamic properties of agents being available, can simplify greatly the problem of prediction of the composition of the oxide layer and accelerate its solution. Findings: In order to predict the phase composition of the boron-carbon surface layers during surfacing as well as of the secondary structures under wear, the calculations of the phase equilibrium in Fe-B-C-O system at 723, 843 and 1644 K have been carried out. Research limitations/implications: The phase equilibrium calculations in the friction couples, containing boron and carbon agree well with the results of investigations of the chemical and phase composition of the secondary structures of wear, formed during friction of boron and carbon-containing composites. Originality/value: The carbon concentration increases on the contact surface. This is caused, in our opinion, by the graphite film formation due to carbon monoxide stability. The boron content in the composition of wear products increases as a result of melting and formation of the oxide layer on the friction surface.

Słowa kluczowe

EN

calculation; phase equilibrium; Fe-B-C-O system

PL

obliczanie; równowaga fazowa

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2007
• Tom: Vol. 28, nr 8
• Strony: 483--488
• Opis fizyczny: Bibliogr. 12 poz., il., wykr.

Twórcy

autor

Lenik K.

autor

Pashechko M.

autor

Kondyr A.

autor

Bohun L.

autor

Lenik Z.

• Education Technical and Information Department of Lublin University, ul. Nadbystrzycka 38, Lublin 20-618, Poland,

Bibliografia

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• [3] M. Pashechko, A. Kondyr, L. Bohun, Phase composition of wear products on the surface of friction pair B4C-IIIX15 steei, Herald of State University Lviv Polytechnic 359 (1999) 77-83 (in Russian).
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• [10] Yu. G. Gogotsi, A. M. Kovalchenko, I. A. Kossko V. P. Yaroshenko, Friction interaction of ceramics on the bases of nonmetallic refrutory compounds with steel, Friction and Wear 5 (1990) 661-667 (in Russian).
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