Study on corrosion resistance of fe-based amorphous coating by laser cladding in hydrochloric acid
In this study, the Fe4Co7Cr15Mo14C15B6Y2 bulk amorphous alloy with high glass-forming ability was prepared using the arc-melting copper mold casting technique, and corresponding amorphous coating was obtained using the laser melt amorphous powders on the surface of carbon steel. The corrosion resistance performance of the laser cladding coating in hydrochloric acid was analyzed and tested in experiments under the conditions of different laser cladding speeds. The amorphous alloy coating with different fabrication parameters have the difference internal structure, which lead to the difference corrosion resistance in the same environment to some extent. The nature of amorphous alloy and the corrosion morphology were investigated using XRD and SEM method, respectively. The corrosion experiments showed that: when the laser power was 3300W, the corrosion resistance of four kinds of samples in hydrochloric acid from strong to weak as follows: as-cast sample>the coating with laser cladding speed 110mm/min>the coating with laser cladding speed 120mm/min>the coating with laser cladding speed 130mm/min. The free corrosion current density of casting sample, sample 1, sample 2 and sample 3 is 3.304×10-6 A/cm2, 2.600 ×10-3 A/cm2,2.030×10-3A/cm2 and 3.396×10-4 A/cm2, respectively.
Fe-based bulk metallic glasses laser cladding amorphous coatings corrosion resistance
Q.J.Chen S.B.Guo X.J. Yang X.L. Zhou X.Z. Hua X.H. Zhu Z. Duan
School of Materials Science and Engineering, Nanchang Hongkong University, Nanchang,330063, China School of Materials Science and Engineering, Nanchang Uniersity,Nanchang,330031,China Jiangxi Hengda Group, Nanchang, 330096, China
国际会议
北京
英文
690-694
2012-10-23（万方平台首次上网日期，不代表论文的发表时间）