论文部分内容阅读
非平衡气氛的碳势定义为：当渗碳反应在钢表面净产生的碳为零时碳钢表面的含碳量。非平衡气氛的碳势表达式为：（λⅠ＋λⅡ＋λⅢ）（ＣｇⅠ）λⅠ·（ＣｇⅡ）λⅡ·（ＣｇⅢ）λⅢ。当钢的表面含碳量等于气氛碳势时，渗碳反应在钢表面净产生的碳为零，由渗碳反应引起的熵产生率最小，由钢和非平衡渗碳气氛所组成系统的相应状态是稳定的。
The carbon potential of a non-equilibrium atmosphere is defined as the carbon content of the carbon steel surface when the net carbon produced by the carburizing reaction is zero on the steel surface. The carbon potential of an unbalanced atmosphere is: (λⅠ + λⅡ + λⅢ) (CgⅠ) λⅠ (CgⅡ) λⅡ (CgIII) λIII. When the surface carbon content of the steel is equal to the carbon potential of the atmosphere, the net carbon produced on the surface of the steel by carburizing reaction is zero, and the entropy generation rate caused by the carburizing reaction is the smallest, which is made up of the steel and the non-equilibrium carburizing atmosphere The state is stable.