【摘要】 在Nb/C比接近于理想化学配比的含Nb微合金钢中,用电解分离沉淀物的方法铡定出碳化铌在γ-Fe中的溶解度积公式为: lg([Nb]·[C]^0.875)_γ=2.97—7500/T±0.06 利用较新的热力学数据推导而得的碳化铌在γ-Fe和α-Fe中的溶解度积公式分别为: lg([Nb]·[C]^0.875)γ=3.24—7150/T（1100—1600K）, lg([Nb]·[C]^0.875)_α=4.87—10060/T（300—1000K）更多还原

【Abstract】 The solubility of niobium carbide in γ-Fe of a microalloy steel, in which the Nb/C ratio is approximately equal to the stoichimetrie ratio of the carbide, has been determined by means of electrolytic extraction: lg([Nb]·[C]^0.875)_v=2.97—7500/T±0.06（850—1200℃） The solubilities of it in γ-Fe and α-Fe have also been derived using the latest thermodynamic data, following results were obtained: lg([Nb]·[C]^0.875)_v=3.24—7150/T（1100—1600K） lg([Nb]·[C]^0.875)₀=4.87—10060/T（300—1000K）更多还原