304不锈钢点蚀产物对亚稳态点蚀萌生和稳态蚀孔生长的加速作用

王标,杜楠,张浩,王帅星,赵晴

Accelerating Effect of Pitting Corrosion Products on Metastable Pitting Initiation and the Stable Pitting Growth of 304 Stainless Steel

Biao WANG,Nan DU,Hao ZHANG,Shuaixing WANG,Qing ZHAO

表1 不同搅拌速度下极化后单个蚀孔的几何参数

Table 1 Geometric parameters of a single pit after polarization at different stirring rates

Stirring rate r / min D / μm d / μm H / μm V / μm3 DH dH 0 175 103 105 1.61×106 1.67 0.98 100 133 85 90 8.36×105 1.47 0.94 300 125 79 87 7.45×105 1.43 0.90 500 89 62 75 3.54×105 1.18 0.82