Wear and Corrosion Evaluation of Pack Borided AISI 1060 Steel
Boronizing is used to obtain very high hardness and wear resistance on ferrous, non-ferrous materials and some super alloys. Borided materials are also efficient against corrosion in a non-oxidizing medium. The process can be conducted in solid, liquid or gaseous medium. In this work, samples of AISI 1060 steel were borided by the pack bonding method for 2 and 4h at 900 and 1000℃. Optical and micro-hardness analyses were conducted and wear tests performed using a micro-wear machine. Corrosion tests were conducted using potentiodynamic polarization curves in hydrochloric acid. Pack boronizing resulted in the formation of layers with high hardness and wear resistance. All the borided layers yielded a maximum hardness of approximately 2000HV. Increasing treatment time and temperature increased layer thickness. X-ray diffraction patterns showed the presence of only Fe2B for samples treated at 900℃ for 2 and 4h. The samples borided at 1000℃ for 2 and 4h yielded layers composed of a mixture of Fe2B and FeB. The wear resistance of the samples borided at 1000℃ was higher than those borided at 900℃ which is probably due to the difference in chemical composition of the layers. Borided samples are more resistant to corrosion in HCl medium than the substrate but no variation in this resistance with process parameters were observed.
pack boronizing z-ray diffraction wear corrosion
Fernandes,F.A.P. Heck,S.C. Picon,C.A. Totten, G.E. Casteletti,L.C.
Sao Carlos School of Engineering,EESC-USP,Sao Carlos,SP,Brazil Engineering School ofllha Solteira,FEIS-UNESP,Ilha Solteira,SP,Brazil
国际会议
The Fourth Asian Conference on Heat Treatment and Surface Engineering(第四届亚洲热处理及表面工程大会)
北京
英文
368-372
2009-10-27（万方平台首次上网日期，不代表论文的发表时间）