中文摘要：

研究氧化亚铁硫杆菌（T.f菌）和氧化硫硫杆菌（T.t菌）生物刻蚀加工金属材料的协同作用.通过比较2种菌种及其混合菌种分别刻蚀加工紫铜、锡青铜、T10、40Cr,分析3种情况下刻蚀加工上述4种金属材料的速率.结果表明,混合菌刻蚀上述金属的最大速率分别为单独使用T.f菌时的3.4,3.6,2.5,2.5倍.在存在铁离子和适合的还原性硫化合物的条件下,T.t菌能增强T.f菌的生物刻蚀加工作用,提高刻蚀速率.

英文摘要：

The synergism effect of Thiobacillus ferrooxidans（T.f） and Thiobacillus thiooxidans（T.t） on bio-etching metal material was studied. The rates of bio-etching copper, tin bronze, T10, 40Cr were analysed and compared while T.f, T.t and the mixture of T.f and T.t was used separately. The maximal bio-etching rate of bio-etching above metals using the mixture of T.f and T.t is 3.4 times, 3.6 times, 2.5 times and 2.5 times than that of using T.f alone, respectively. The bio-etching effect of T.f can be enhanced by T.t mixed under the condition that Fe2＋ ion and proper reductive sulphide exist, and the bio-etching rate is increased.