Corrosion Resistance of 9% Cr Oxide Dispersion-Strengthened Steel in Different Electrolytic Media
Corrosion Resistance of 9% Cr Oxide Dispersion-Strengthened Steel in Different Electrolytic Media
复制标题
腐蚀%20电阻%20of%209%%20Cr%20氧化物%20弥散强化%20钢%20in%20不同%20电解%20介质
作者：
S. Ningshen;M. Sakairi;Kuniaki Suzuki;S. Ukai
评价了9%铬氧化物弥散强化钢在不同酸化和氯化物介质中的耐蚀性和钝化膜成分。结果表明，随着硝酸(HNO3)浓度从1M增加到11.5M，开路电位表现出更高的电位，而在含氯介质中，则表现出不那么崇高的电位。在0.5M硫酸(H_2SO_4)和1M~11.5M HNO_3的酸性介质中，动电位极化曲线显示出较高的击穿/过钝化电位，并且随着HNO_3浓度从1M增加到11.5M，腐蚀电位向过钝化区移动，而在所研究的HNO_3浓度下，没有观察到晶间腐蚀。在酸性氯化物介质(0.5M H_2SO_4+0.1M和0.5M氯化钠[氯化钠])和纯氯化物介质(0.1M和0.5M氯化钠)中，耐点蚀性能较差的原因是组织的不均匀性和耐蚀性能较差。
The corrosion resistance and passive film compositions of 9% Cr oxide dispersion-strengthened steel in different acidified and chloride media was evaluated. The results presented below show that with increasing concentrations of 1 M to 11.5 M nitric acid (HNO3), the open-circuit potential reveals a more noble potential, while in chloride-containing media, a less noble potential was observed. The potentiodynamic polarization plots exhibited higher breakdown/transpassive potentials in acidic media with 0.5 M sulfuric acid (H2SO4) and 1 M to 11.5 M HNO3, and there was a shift in the corrosion potential toward the transpassive region as the HNO3 concentration increased from 1 M to 11.5 M. However, no intergranular corrosion attack was observed at the HNO3 concentrations studied. In acidic-chloride media (0.5 M H2SO4 with 0.1 M and 0.5 M sodium chloride [NaCl]) and in chloride only media (0.1 M NaCl and 0.5 M NaCl) poor pitting corrosion resistance was attributable to the microstructural inhomogeneity and incl...
影响因子：
1.7
作者：
H. Sakasegawa;S. Ohtsuka;S. Ukai;H. Tanigawa;M. Fujiwara;H. Ogiwara;A. Kohyama
通讯作者：
H. Sakasegawa;S. Ohtsuka;S. Ukai;H. Tanigawa;M. Fujiwara;H. Ogiwara;A. Kohyama