Determination of susceptibility to intergranular corrosion of stainless steels type X5CrNi18-10 in field

Metallurgical & Materials Engineering

article

Bore V. Jegdić¹  Biljana M. Bobić² 

[1] University of Belgrade, Institute for Chemistry;University of Belgrade, Institute for Chemistry

关键词: Stainless steels;    intergranular corrosion;    electrochemical potentiokinetic reactivation;    field tests;   

DOI  :  10.30544/236

学科分类：医学（综合）

来源: Association of Metallurgical Engineers of Serbia

【 摘 要 】

In this paper, the DL EPR method (electrochemical potentiokinetic reactivation with double loop) was modified and used to study the susceptibility to intergranular corrosion and stress corrosion cracking of a stainless steel type X5CrNi18-10. The tests were performed in a special electrochemical cell, with the electrolyte in the gel form. Modified DL EPR method is characterized by simple and high accuracy measurements as well as repeatability of the test results. The indicator of susceptibility to intergranular corrosion (Qr/Qp)GBA obtained by modified DL EPR method is in a very good agreement with the same indicator obtained by standard DL EPR method. The modified DL EPR method is quantitative and highly selective method. Small differences in the susceptibility of the stainless steel type CrNi18-10 to intergranular corrosion and stress corrosion cracking can be determined. Test results can be obtained in a short time. The cost of tests performed by modified DL EPR method is much lower than the cost of tests by conventional chemical methods. Modified DL EPR method can be applied in the field on the stainless steels constructions.

【 授权许可】

CC BY