基于<strong>PDM</strong>的<strong>304</strong>不锈钢钝化膜生长动力学研究

基于PDM的304不锈钢钝化膜生长动力学研究

毛飞雄, 周羽婷, 姚文清, 沈翔, 肖龙, 李明辉

Growth Kinetics of Steady-state Passive Film on Type 304 Stainless Steel Based on Point Defect Model

MAO Feixiong, ZHOU Yuting, YAO Wenqing, SHEN Xiang, XIAO Long, LI Minghui

表1 界面反应的速率常数表达式

k_{i} = k_{i}^{0} e^{a_{i} V} e^{b_{i} L} e^{c_{i} p H}

中的系数

Table 1 Various coefficients in the rate constants of the interfacial reactions, i.e.

k_{i} = k_{i}^{0} e^{a_{i} V} e^{b_{i} L} e^{c_{i} p H}

Reaction	$a_{i} / V^{- 1}$	$b_{i} / c m^{- 1}$	c_i	Units of $k_{i}^{0}$
(1) $m + V_{M}^{χ'} \overset{k_{1}}{\to} M_{M} + ν_{m} + χ e'$	$α_{1} (1 - α) χ γ$	$- α_{1} χ K$	-α₁βχγ	$\frac{1}{S}$
(2) $m \overset{k_{2}}{\to} M_{i}^{χ +} + ν_{m} + χ e'$	$α_{2} (1 - α) χ γ$	$- α_{2} χ K$	-α₂βχγ	$\frac{m o l}{c m^{2} \cdot s}$
(3) $m \overset{k_{3}}{\to} M_{M} + \frac{χ}{2} V_{O}^{∙ ∙} + χ e'$	$α_{3} (1 - α) χ γ$	$- α_{3} χ K$	-α₃βχγ	$\frac{m o l}{c m^{2} \cdot s}$
(4) $M_{M} \overset{k_{4}}{\to} M^{δ +} + (δ - χ) e'$	$α_{4} α δ γ$	-	α₄βδγ	$\frac{m o l}{c m^{2} \cdot s}$
(5) $M_{i}^{χ +} \overset{k_{5}}{\to} M^{δ +} + (δ - χ) e'$	$α_{5} α δ γ$	-	α₅βδγ	$\frac{c m}{s}$
(6) $V_{O}^{∙ ∙} + H_{2} O \overset{k_{6}}{\to} O_{O} + 2 H^{+}$	$2 α_{6} α γ$	-	α₆βδγ	$\frac{c m}{s}$
(7) $\begin{array}{l} M O_{χ / 2} + χ H^{+} \overset{k_{7}}{\to} M^{δ +} + \\ \frac{χ}{2} H_{2} O + (δ - χ) e' \end{array}$	$α_{7} α (δ - χ) γ$	-	α₇(δ-χ)βγ	$\frac{m o l}{c m^{2} \cdot s}$