New Method of Manufacturing Micro Parts Using Thiobacillus Ferrooxidans  

作　　者：刘玉德 王西彬 杨钥 吕良 龙镇海 赵罘 

机构地区：[1]School of Mechanical Engineering,Beijing Institute of Technology [2]College of Mechanical Engineering,Beijing Technology and Business University

出　　处：《Journal of Beijing Institute of Technology》2009年第2期171-175,共5页北京理工大学学报（英文版）

基　　金：Sponsored by the Ministerial Level Advanced Research Foundation(631092)

摘　　要：A new method of processing and manufacturing certain parts of instruments through biological approach is studied. Knowledge of feasibility of micro-manufacturing is obtained by comparing experimental results of etching surfaces of copper, aluminium alloy, brass, steel and stainless steel using strain of Thiobacillus ferrooxidans （ T. f. ）. Our experimental results show that certain metals can be etched using T. f., the most feasible material is copper, followed by brass, etc., with stainless steel the least. The surface of the stainless steel material is nearly unchanged during surface-etching. Micro parts made of copper or brass can be satisfactorily processed with T.f. and the rate of processing on copper is about 14 μm/h. Furthermore, surface roughness and processing speed are controlled by pH value and temperature of etching liquid, in addition to swing rate of the the swing bed.A new method of processing and manufacturing certain parts of instruments through biological approach is studied. Knowledge of feasibility of micro-manufacturing is obtained by comparing experimental results of etching surfaces of copper, aluminium alloy, brass, steel and stainless steel using strain of Thiobacillus ferrooxidans （ T. f. ）. Our experimental results show that certain metals can be etched using T. f., the most feasible material is copper, followed by brass, etc., with stainless steel the least. The surface of the stainless steel material is nearly unchanged during surface-etching. Micro parts made of copper or brass can be satisfactorily processed with T.f. and the rate of processing on copper is about 14 μm/h. Furthermore, surface roughness and processing speed are controlled by pH value and temperature of etching liquid, in addition to swing rate of the the swing bed.

关 键 词：advaced manufacturing BIO-MANUFACTURING bio-etching Thiobacillus ferrooxidans （T.f.） 

分 类 号：TG174.4[金属学及工艺—金属表面处理]