钢筋混凝土构筑物粘钢加固防腐施工新技术

本文主要介绍了钢筋混凝土构筑物遭受化学介质的腐蚀机理及其加固的新技术，比较详细的介绍了粘钢加固的工艺过程。     

磷酸三辛酯生产及在双氧水中的应用

磷酸三辛酯（TrioctylPhosphate），又名磷酸三异辛酯，学名磷酸三（２—乙基己基）酯，简称TOP。磷酸三辛酯是１种既有阻燃性又有耐寒性的特种增塑剂，其低温性优于己二酸酯类，耐水性优良，挥发性低，与PVC树脂配合具有优异的凝胶作用，同时赋予制品优良的机械性能、紫外光稳定性、抗老化性、阻燃性及抑菌作用。主要应用于军用PVC制品、涂料、合成橡胶及纤维中，还可以用于双氧水（H２O２）的工作溶剂、润滑油添加剂、贵重金属萃取剂等。目前，我国主要的生产单位有杭州大自然有机化工实业有限公司、无锡太湖化工溶剂厂、杭州黎明聚…     

Nucleation Mechanism for Bainite

Based on the experimental results that solute-depleted zone was observed in Cu-28Zn-4AI (mass fraction) at 523 K, AG is calculated as a positive according to the thermodynamic criteria for the spinodal decomposition of a ternary systems. So, the solute-depleted zone cannot be formed by spinodal decomposition. Dislocation density required by the formation of solute-depleted zone is estimated greater than 7.89×109 cm-2, according to the segregation of solute atoms around dislocations, which is not consistent with the practical situation for the alloy at 523 K. Associated with the internal friction experimental fact that internal friction peaks appear within the incubation for bainitic transformation in Cu-Zn-AI alloy, the equilibrium temperature, TO, is evaluated as 433 K for solute-depleted Cu-25Zn-3.4AI, which is lower than the experimental temperature 523 K. Thus, nucleation by shear mechanism is impossible in this circumstance. Therefore, it is concluded that, like bainite in steels and Ag-Cd, bainite in     

功率电子器件用AlN陶瓷基板的研制

阐述了AlN陶瓷的烧结原理 ,分析了烧结工艺参数对大面积AlN基板性能的影响 ,成功研制出了高热导率(190W /m·K)、大面积 (14 0mm× 90mm)、翘曲度为 2 0 μm/5 0mm的AlN陶瓷基板。