Study of the trivalent Cr electroplating technology and investigation of the mechanical and chemical properties of trivalentCr-based alloy deposited Mg alloys

With the financial support of NSC in recent three years, I have published over 10 articles and obtained two Taiwan＇s patents in trivalent Cr electroplating technology and Cu electroplating on Mg alloys. That is, my research results meet the project purpose. Based on our previous results in developing a trivalent Cr plating bath, the mechanical and chemical properties of two-, three-and four-component Cr-based alloy deposits will be further studied in next three years in this project. The plating substrates are Mg alloys (AZ61 and AZ91D). With the aid of microstructure study, the hardening mechanism, corrosion and wear resistance, and fatigue and tensile properties of Cr-based alloy deposited specimens will be investigated. Meanwhile, according to our developed trivalent Cr-based plating baths, we try to improve the throwing power of trivalent Cr electroplating. The hardening mechanisms and dynamic hardening behavior of Cr-based alloy deposits will be investigated. Furthermore, we try to develop an electroplating technology of Cr-based fourcomponents alloy deposits. In the first year of this project, throwing power and electroplating current distribution of trivalent Cr plating will be studied. The tensile and fatigue behavior of Cr-based alloy deposited Mg alloys will be tested and discussed. In the second year, the annealing hardened Cr-based alloy deposits will be investigated. The corrosion-, wear-, and corrosion wear-resistance of Cr-based alloy deposited Mg alloys will be measured. In the last year, the tensile and fatigue behavior of composite coatings of Cr-based alloys and Al2O3 nanopowders on Mg alloys will be studied; meanwhile, four-component Cr-based alloy electroplating bath will be developed. During the performance of this project, I expect, at least two academic articles will be published in SCI journal every year; besides, the technology of Cr-based alloy electroplating could be very useful in related industry.

Project ID:PB10202-1475
External Project ID:NSC101-2221-E182-028-MY3