INVESTIGATION ON CHEMICAL STABILITY OF ALLOY CARBIDES AT HIGH TEMPERATURE

Abstract

Abstract: Oxidation tests of high Cr-Ni cast irons containing Mo, W and B are carried out at 800℃and 950℃ in air. It was shown by the results that the high temperature stability of (Cr, Fe)7C3 carbide containing appropriate contains of Mo, W or B was increased to some extent. The effect of the alloy elements on chemical stability of the carbide at high temperature is discussed from the viewpoints of the bonding forces between atoms and the Gibbs free energy.

Key words: Alloyed cast iron, Bond energy, Carbide, Chemical stability, Free energy

CLC Number:

TH143

Xie Rongjun;Wu Wenzhong;Xing Jiandong;Wang Enze. INVESTIGATION ON CHEMICAL STABILITY OF ALLOY CARBIDES AT HIGH TEMPERATURE[J]. , 1997, 33(2): 8-13，3.

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INVESTIGATION ON CHEMICAL STABILITY OF ALLOY CARBIDES AT HIGH TEMPERATURE

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