模拟工业-海岸大气中pH值对Q235B钢腐蚀行为的影响*

陈文娟, 郝龙, 董俊华, 柯伟, 文怀梁

EFFECT OF pH VALUE ON THE CORROSION EVOLUTION OF Q235B STEEL IN SIMULATED COASTAL-INDUSTRIAL ATMOSPHERES

CHEN Wenjuan, HAO Long, DONG Junhua, KE Wei, WEN Huailiang

表2 Q235B钢在模拟工业-海岸大气中9条腐蚀增重曲线的分段拟合结果

Table 2 Fitting results of corrosion mass gain of Q235B steel in the nine simulated coastal-industrial atmospheres in Table 1 (y is lgDW, x is lgN, lgA is the constant and n is the slop in the Eq.(3), R2 is the fitting correlation coefficient)

Atmosphere 1st stage 2nd stage 3rd stage 4th stage No.1 y=-0.108+0.991x - - - R2=0.998 No.2 y=-0.069+0.958x - - - R2=0.998 No.3 y=-0.122+0.996x - - - R2=0.999 No.4 y=-0.094+1.039x - - - R2=0.999 No.5 y=-0.044+1.006x - - - R2=0.999 No.6 y=-0.072+1.031x - - - R2=0.999 No.7 y=0.057+0.772x y=0.232+0.566x y=-0.725+1.401x y=-0.176+0.994x R2=0.977 R2=0.992 R2=0.996 R2=0.999 No.8 y=0.062+0.849x y=0.256+0.605x y=-0.664+1.405x y=-0.096+1.007x R2=0.997 R2=0.992 R2=0.996 R2=0.995 No.9 y=0.047+0.795x y=0.199+0.614x y=-0.705+1.398x y=-0.014+0.877x R2=0.981 R2=0.964 R2=0.995 R2=0.998