磷化

Phosphine(PH3)is an important electronic specific gas which is mainly used in fields of N-type semiconductor doping,ion implement and chemical vapor deposition etc.

磷化氢在电子工业中主要用作外延硅半导体的一种n型掺杂剂，在化学气相沉积和离子注入中被用作一种磷源，在发光二极管用磷砷化镓膜的生产中也占有重要地位。

Effects of the different accelerants(La and Ce nitrate,Na nitrate and Na molybdate) on phosphatization were discussed.

提出在表面生成磷化膜以提高不锈钢的耐磨与耐蚀性能的工艺方法，讨论了各种促进剂(亚硝酸钠、钼酸钠、硝酸铈和硝酸镧)对磷化膜形成的影响，探讨了稀土对磷化的影响机理。

To analyze and compare the microstructures and appearances of steel wires with different phosphatization quality treated simultaneously in the same continuous production line by means of microscopy and SEM.

利用金相分析及扫描电镜等方法对钢丝连续生产线上同时处理的磷化质量差异较大的钢丝进行金相组织和外观形貌对比分析，指出造成钢丝磷化质量相异的主要原因是钢丝表面存在脱碳组织，这种脱碳组织是线材表面脱碳造成的，并且线材的脱碳层厚度即使是在相关标准规定范围内，也会对连续作业线的钢丝磷化造成影响。

Study on Phosphatization and Passivation Two in One Treatment Process;2. Effects of the different accelerants(La and Ce nitrate,Na nitrate and Na molybdate) on phosphatization were discussed.

提出在表面生成磷化膜以提高不锈钢的耐磨与耐蚀性能的工艺方法，讨论了各种促进剂(亚硝酸钠、钼酸钠、硝酸铈和硝酸镧)对磷化膜形成的影响，探讨了稀土对磷化的影响机理。

When the above phosphating process was used on the weld joint of wire, the result showed that the phosphate coating can eliminate surface transverse cracks.

生产性磷化试验表明，采用低温快速磷化工艺对盘条焊接区进行磷化处理，能有效地防止表面横向裂纹的产生。

The results show that the surface quality of phosphating film is obviously improved by ZY, and a uniform and compact coating can be obtained when phosphated at 20℃ for about 20 minutes, which is 1.09 g/m^2 in weight, can withstand CuSO4 solution dropping for above 200 s, and resist mass fraction of 3% NaCl solution soaking for more than 5 hours.

结果表明，成膜助剂ZY明显地改善了磷化膜的表面质量，在20℃、磷化20min时可以获得均匀致密的磷化膜，膜重为1.09g/平方公尺，耐CuSO4点滴时间超过200s，质量分数为3%的NaCl溶液浸泡时间超过5h。

At the same the fumigating residue with large amount of phosphor is difficult to deal with and endangers people so it must be embedded under earth. It not only pollutes the earth and water, but also wastes lots of aluminas.

本论文根据磷化氢水解反应和粮食储备库环流熏蒸的特点，在已有磷化氢高效发生技术的基础之上，系统研究了磷化氢发生反应的最佳工艺条件。

The supported WP catalysts showed considerable activity in HDS reaction of dibenzothiophene and HDN reaction of quinoline. The ibenzothiophene HDS activity and quinoline HDN activity of the spported WP catalysts synthesized by co-impregnation method was better than that synthesized by mixing method. The HDS and HDN activities of 25～30% WP catalysts synthesized by co-impregnation method and reduced at 650～750℃ were better than those of the corresponding sulfurized catalyst.

负载型WP催化剂具有较好的二苯并噻吩加氢脱硫和喹啉加氢脱氮活性，共浸渍法制备的磷化钨催化剂二苯并噻吩加氢脱硫和喹啉加氢脱氮活性要高于混合法制备的磷化钨催化剂。650～750℃还原制备的负载量25～30%的浸渍法磷化钨催化剂具有较高的二苯并噻吩加氢脱硫和喹啉加氢脱氮活性，高于相应的硫化态催化剂。

The experimental results show that the appropriate composition of phosphating solution is composed of Zn(H_2PO_4)_2·2H_2O 55-65g/L,Zn(NO_3)_2·6H_2O 70-85g/L,H_3PO_4 5mL/L,NaNO_2 0.2-0.4g/L. The crystal structure of the gray phosphate coating prepared at 40℃/10min i...

结果表明，低温快速磷化处理液的组成：Zn(H2PO4 )2· 2H2O为 55 ~65g/L、Zn(NO3 )2·6H2O为 70~85g/L、浓H3PO4 为 5mL/L、氧化剂NaNO2 加入量为 0 2~0 4g/L；经 40℃、10min的快速磷化处理后，获得的磷化膜膜重大于 10g/m2，结晶细小致密，与基体结合力强。

Nickel phosphide was chosen as the HDN catalyst in the present dissertation because it is reported to have the highest activity among transition metal phosphides. For the supported nickel phosphide catalysts, mesoporous MCM-41 was used as the carrier. The effect of support modification and the introduction of a secondary metal species on the activity of supported nickel phosphide catalysts were studied.

本论文以磷化镍催化剂为研究对象，考察了MCM-41负载的磷化镍催化剂的制备及其对喹啉的HDN反应性能，载体和活性组分的改性对喹啉HDN反应性能的影响，以及TiO_2的引入对非负载的磷化镍催化剂HDN反应的影响。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。