通过二次冷轧铜棒并850℃恒温热处理,制备出具有较强立方织构的Cu基带。以硝酸银、亚硫酸钠和硫代硫酸钠为主要原料配制镀银液,在立方织构Cu基带上制备出具有较强Ag(200)择优取向的银镀层。在600℃恒温热处理30min后Ag膜仍具有(200)择优取向,而830℃热处理后,Ag会扩散到Cu基底中,重复镀银、热处理5次后,Ag膜具有(200)的择优取向并少量面内织构,所得Ag/立方织构Cu复合带材可作为第二代高温超导带材YBCO涂层导体的金属基底。
Coagulation-hydrolytic acidification process has been used for the pretreatment of antibiotic pharmaceu-tical wastewater.Then,SBR + MBR process has been used for treating the wastewater biochemically.The running results show that its CODCr average removal rate reaches 33.72%,after the coagulating treatment.The CODCr re-moval rate reaches 17.25%,and biodegradability is improved after hydrolytic acidification.Finally,the average ef-fluent CODCr drops from 1 200 mg/L to 195 mg/L(≤300 mg/L) after being treated by the combined SBR+MBR aer-obic process,which meets the 2nd class of the National Standard of Integrated Wastewater Discharge(GB 8978— 1996).