Cr-Ni型水轮机材料电化学腐蚀和抗空蚀行为

中国腐蚀与防护学报

2005, Vol. 25

Issue (5): 312-316

研究报告

本期目录 | 过刊浏览

Cr-Ni型水轮机材料电化学腐蚀和抗空蚀行为

娄延春;赵芳欣;于波;王景成;熊云龙

沈阳铸造研究所

ELECTROCHEMICAL CORROSION AND CAVITATION EROSION BEHAVIOR OF Cr-Ni HYDRAULEC TURBINE MATERIAL

Yanchun Lou;Fangxin Zhao;Bo Yu;Jingcheng Wang;Yunlong Xiong

沈阳铸造研究所

全文: PDF(172 KB)

摘要: 以ZG20Cr13为对比材料，在浓度为1mol/L的H2SO4溶液中测定了ZG06Cr13Ni4Mo(简称13-4)和Cr含量降至1061%、834%和664%(mass)时材料的阳极极化曲线.利用超声振荡空蚀实验机和洛氏硬度计分别研究了13-4、85Cr-4N i（简称85-4）和高强韧性Cr-Ni型不锈钢SRIF的空蚀行为和局域弹性性质，并研究了试验材料的组织和力学性能.结果表明，随13-4中Cr含量降低，材料的电化学腐蚀性能降低.当Cr含量降低至834%时，材料的电化学腐蚀性能与ZG20Cr13相当，仍属于不锈钢范畴.8.5-4、13-4和SRIF的局域弹性性质he无明显差别，13-4的抗空蚀性能略高于8.5-4，SRIF的抗空蚀性能明显高于前两者.

关键词 ： Cr-Ni不锈钢, 水轮机材料, 电化学腐蚀, 空蚀

Abstract：Based on ZG06Cr13Ni4Mo (13-4)，while its chromium content being reduced to 10.61%,8.34% and 6.64% respectively,their anodic polarization curves compared with that of ZG20Cr13 have been tested in 1mol/L H2SO4 solution.Using ultrasonic vibration cavitation erosion device and Rockwell apparatus，the 13-4，the 8.5Cr-4Ni (8.5-4) and the high strength and high toughness stainless steel -SRIF have been studied on the behaviors of cavitation erosion resistance and local micro-zone elasticity respectively.Their microstructures and mechanical properties have also been investigated.The results show that electrochemical corrosion properties decrease as chromium content decreases comparing with these of the 13-4.When chromium content decreases to 8.34%,the material and ZG20Cr13 are matched in electrochemical corrosion properties,which is still in the category of stainless steel.The values of local micro-zone elasticity he of 8.5-4,13-4 and SRIF are very close.The cavitation erosion resistances of the 13-4 are higher a little than these of the 8.5-4,and these of the SRIF are obviously higher than those of 8.5-4 and 13-4.

Key words： Cr-Ni stainless steel hydraulic turbine material electrochemical corrosion cavitation erosion mechan

收稿日期: 2005-01-20

ZTFLH:

TG174.36

通讯作者: 娄延春 E-mail: Yub@Chinasrif.com

Corresponding author: Yanchun Lou E-mail: Yub@Chinasrif.com

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引用本文:

娄延春; 赵芳欣; 于波; 王景成; 熊云龙 . Cr-Ni型水轮机材料电化学腐蚀和抗空蚀行为[J]. 中国腐蚀与防护学报, 2005, 25(5): 312-316 .
Yanchun Lou, Fangxin Zhao, Bo Yu, Jingcheng Wang, Yunlong Xiong. ELECTROCHEMICAL CORROSION AND CAVITATION EROSION BEHAVIOR OF Cr-Ni HYDRAULEC TURBINE MATERIAL. J Chin Soc Corr Pro, 2005, 25(5): 312-316 .

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https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2005/V25/I5/312

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