Material Removal Mechanisms of Cu-Co Metal-Powder Composite by Microorganisms

被引：7

作者：

Ma, Fei ^{[1
]}

Huang, Hui ^{[1
]}

Xu, Xipeng ^{[1
]}

机构：

[1] Huaqiao Univ, Inst Mfg Engn, Xiamen 361021, Fujian, Peoples R China

来源：

INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING-GREEN TECHNOLOGY | 2020年 / 7卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Biomachining; Powder sintering; Acidithiobacillus ferrooxidans; Reduction potential; Micro-galvanic corrosion; ACIDITHIOBACILLUS-FERROOXIDANS; CULTURE SUPERNATANT; COPPER; CELLS;

D O I：

10.1007/s40684-019-00110-8

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Material characteristics of pure copper, pure cobalt and Cu-Co metal-powder composite were comparative studied through biomachining byAcidithiobacillus ferrooxidans(A. ferrooxidans) in three groups of culture solutions. Material removal mechanisms of Cu-Co metal-powder composite involved in biomachining were explored. It was first observed that the pure cobalt and Cu-Co metal-powder composite were machined by theA. ferrooxidans. The material removal of three workpieces presented linear increase along the machining process due to the metabolic activity of theA. ferrooxidans. Different with the pure metal, the material removal mechanism of Cu-Co metal-powder is explained by the dual effect of micro-galvanic corrosion and participation of Cu(2+)and Fe(3+)for oxidization of cobalt.

引用

页码：975 / 986

页数：12

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