Chromium Electroplates for Corrosion Protection of Stressed AISI 410 In High Temperature, High Purity Water

摘要

The use of chromium plates tor protection of AISI 41O against stress corrosion cracking has given anomalous results. The coating either offered protection under conditions which produced failure in unplanted material/ or caused accelerated failures under conditions which unplanted material did not fail. Factors which may have contributed to the anomalous results are discussed. Introduction of oxygen into 300F water systems caused accelerated stress corrosion failures, especially for the chromium-plated samples, with applied stresses as low as 63,000 psf. from present available information, chromium deposits are not recommended for corrosion protection of AISI 410 materials susceptible to stress corrosion and/or intergranular attack.