二叠氮季戊二醇二硝酸酯的研究

二叠氮季戊二醇二硝酸酯（ＰＤＡＤＮ）分子中有两种含能基─ＯＮＯ＿２和─Ｎ＿３，可望作为一种良好的炸药或火箭推进剂的组分。美国的Ｆｒａｎｋｅｌ等已合成出该化合物，并报道它在常温下（２２．５℃）是油状液体；但我们用相同方法合成出的产物却是熔点为３９．６～３９．７℃的晶体物质。本文介绍了我们的实验结果及其有关物理化学性质方面的数据。     

LASER CLADDED TiCN COATINGS ON THE SURFACE OF TTTANIUM

Laser cladded coatings of TiCN were produced on the surface of titanium. To obtain the optimal techniques, several conditions were tested by varying the laser scanning rate. The choice of shielding gas was also studied. The cladded coatings were then evaluated from the surface mechanics point of view based on their microhardness. The microstructure of some interesting samples was investigated by optical micrographs （OM）. The results showed that under the condition of fixed pulse frequency and pulse width, the laser scanning rate and the shielding gas are the main factors influencing the components of coatings. TiCN coatings were decompounded and oxidized during the cladding process in the condition of no shielding gas of N2. X-ray diffraction results indicated that the composite coatings composed of TiCN, TiC, Ti2N, and TiO2 were produced using appropriate techniques. The results indicated that the best condition in terms of the surface microhardness is obtained when the scanning rate is 1.5mm/s, the pulse frequency is 15Hz, the pulse width is 3.0ms, and N2 is chosen as the shielding gas. The microhardness of the composite coatings is about 1331kg · mm^-2, which is about 4 times that of the substrate. The optical micrographs indicated that the cladding zone is made up of TiCN, TiO2 and some interdendritic Ti, but the diffusion zone mainly consists of the dendrites phase, and the cladded depth is about 80μm, which is more than 2 times that of the laser nitrided sample. There were no microcracks or air bubbles in the cladded sample, which was cladded using the above optimal techniques.     

乙醛酸的合成及在医药中的应用

乙醛酸的合成基本分为2大类，化学合成和电化学合成，其中实现工业化生产的为化学合成中的乙二醛硝酸氧化法、顺酐臭氧氧化法和电化学合成中的草酸电解还原法。     

浅析冷冻法硝酸磷肥的酸解过程

介绍了冷冻法硝酸磷肥酸解过程的化学反应机理、酸解比的确定，分析了酸解过程各指标对整个过程的影响，提出了生产控制要点。     

铝及铝合金无硝酸化学抛光光亮剂研究

对铝及铝合金的无硝酸化学抛光光亮剂进行了研究,对光亮剂的机理进行探讨,讨论了各种工艺条件对抛光的影响,确定了适宜的工艺规范。