Corrosion Behavior of MgZnCa Bulk Amorphous Alloys Fabricated by Spark Plasma Sintering
来源期刊：Acta Metallurgica Sinica2016年第9期
论文作者：Feng-Xiang Qin Chuan Ji Zhen-Hua Dan Guo-Qiang Xie Hao Wang Shin-Ichi Yamaura Mitsuo Niinomi
文章页码：793 - 799
摘 要：Centimeter-sized Mg65Zn30Ca5 bulk amorphous alloys were fabricated by the spark plasma sintering process from the amorphous powders with a size smaller than 5 l m prepared by ball-milling.The sintered Mg65Zn30Ca5samples were in an amorphous state when the spark plasma sintering was performed at a temperature of 383 K under a pressure of 600 MPa.The data of polarization curves presented that the sintered Mg65Zn30Ca5bulk amorphous alloys exhibited higher corrosion resistance than pure Mg and AZ31B alloy owing to high content of Zn and homogeneous structure.A calcium phosphate compound layer was formed on the sintered Mg65Zn30Ca5bulk amorphous sample after immersion in Hanks’solution,which is effective in improving corrosion resistance and bioactivity.The sintered Mg Zn Ca bulk amorphous alloys with large dimensions broaden the potential application of bulk amorphous alloys in the biomedical fields.
Feng-Xiang Qin1,2，Chuan Ji1，Zhen-Hua Dan2,3，Guo-Qiang Xie2，Hao Wang4，Shin-Ichi Yamaura2，Mitsuo Niinomi2
1. School of Materials Science and Engineering, Nanjing University of Science and Technology2. Institute for Materials Research, Tohoku University3. College of Materials Science and Engineering, Nanjing TECH University4. WPI-AIMR, Tohoku University
摘 要：Centimeter-sized Mg65Zn30Ca5 bulk amorphous alloys were fabricated by the spark plasma sintering process from the amorphous powders with a size smaller than 5 l m prepared by ball-milling.The sintered Mg65Zn30Ca5samples were in an amorphous state when the spark plasma sintering was performed at a temperature of 383 K under a pressure of 600 MPa.The data of polarization curves presented that the sintered Mg65Zn30Ca5bulk amorphous alloys exhibited higher corrosion resistance than pure Mg and AZ31B alloy owing to high content of Zn and homogeneous structure.A calcium phosphate compound layer was formed on the sintered Mg65Zn30Ca5bulk amorphous sample after immersion in Hanks’solution,which is effective in improving corrosion resistance and bioactivity.The sintered Mg Zn Ca bulk amorphous alloys with large dimensions broaden the potential application of bulk amorphous alloys in the biomedical fields.
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