亚磷酸

The questing for long service electroless Nickel technology leads to the preferable formula and operation conditions as follows: Nickel Sulphate 25g/L, Sodium Hypophosphate 30g/L, Lactic Acid 20~ 25ml/L, Citric Acid 5g/L, Sodium Acetate 15g/L, Thiourea l~3mg/L, Stabilizer E Img/L.

研究得出的最佳长寿命镀镍工艺为；硫酸镍25g/L，次亚磷酸钠30g/L，乳酸20ml/L，柠檬酸5g/L，乙酸钠15g/L，硫脲1～3mg/L，稳定剂E1mg／L镀液pH值5.0～5.1，施镀温度90±2℃，装载量1dm~2/L；每60min测量镀液中消耗的有效成分和补加浓缩液。

The questing for acidic middle-temperature electroless Nickel technology leads to the preferable prescription as follows:Proportion of Nickel Sulphate and Sodium Hypophosphate 0.36; Sodium Acetate 15g/L; Stabilizer A lmg/L(Stabilizer B Img/L for continual experiment); Composite complexing agent Lactic Acid 10ml/L and acetic acid 10 ml/L; Accelerator organic acid G 6g/L; pH value 5.0; Loading Capacity ldm2/L; Temperature 70C (Temperature 75C for continual experiment); Proportion of supplement for Nickel Sulphate and Sodium Hypophosphate 1:1.2; Testing the consumed ion of Nickel solution and supplement inspissations solution every 60min by the proportion of 15% fresh solution.

最后，通过研究得出最佳工艺配方为：硫酸镍与次亚磷酸钠的摩尔比为0.36；乙酸钠15g／L：稳定剂Almg／L(周期实验加稳定剂B10mg／L)；复合络合剂组合为乳酸10ml／L+冰乙酸10ml／L：促进剂为有机酸G6g／L；pH值为5.0；装载量为1.0dm~2／L；施镀温度为70℃(周期实验为75℃)：主盐与还原剂的添加比例1：1.2；每60分钟对镀后液进行镍离子浓度的测定并按镍离子的消耗量添加浓缩液，添加比例按开缸液的15％。

The process of hypophosphite electrooxidation on a nickel electrode could be well simulated by this model.

结果表明，该模型能很好地模拟次亚磷酸根在镍电极上的电化学氧化过程。

Kinetics and mechanism of hypophosphite oxidation on a nickel electrode were studied by means of the electrochemical mass spectroscopy and kinetic model analysis.

用电化学质谱和动力学模型分析等方法研究了次亚磷酸根在镍电极上的电化学氧化机理和动力学。

The mechanism of electroless nickel deposition in sodium hypophosphite bath is discussed.

探讨了次亚磷酸钠体系化学镀镍沉积机理。

XRD analysis results indicate that temperature and time on the tin layer of preferred orientation did not affect the crystal surface structures are based on Sn (220) and Sn (211) the growth of the dominant, while the sodium hypophosphite is conducive to crystal faces of Sn (101) of the formation

XRD分析结果说明温度和时间对镀锡层的择优取向没有影响，晶面结构都是以Sn(220)和Sn(211)生长占优势，而次亚磷酸钠有利于晶面Sn(101)的形成。

On the basis of Ni-S alloy electrode made by electrodeposition method, Ni-P-S alloy electrode was obtained by adding sodium hypophosphite monohydrate into the bath.

在电沉积法制备Ni-S合金电极的基础上，向镀液中添加次亚磷酸钠制备了Ni-P-S合金电极。

Acid electroless nickel phosphorus plating on PZT ceramic was studied with hypophosphite as a reducing agent.

以次亚磷酸钠为还原剂，在压电陶瓷表面进行酸性化学镀镍磷。

Chapter 4 describes the synthesis, structural characterization and properties of anovel organic-inorganic hybrid compound, F〓〓BEDT-TTF =bis(ethylenedithiotetrathiafulvalene, which has been synthesized through thereaction of the pre-intercalate Fe〓PS〓〓(phen = 1.10-phenanthroline) with〓 Compared with the pristine FePS〓, the lattice spacing isexpanded by about 4.0〓, indicating that the molecular ring plane of BEDT-TTF isarranged parallel to the layer of the host.

通过红外光谱推测客体BEDT-TTF在层间以中性状态存在。X-线光电子能谱揭示在夹层化合物Fe〓PS〓〓中磷原子和硫原子在硫代亚磷酸根负离子簇中各存在两种化合价态，其中一种价态与纯主体或预夹层化合物〓〓中的磷原子和硫原子价态一致，而另一种价态却比纯主体FePS〓或预夹层化合物Fe〓中的磷原子和硫原子价态高。

In the previous report, the addition of catechyl phosphite can increase the lubricity of base oil.

在前一年的报告中显示儿茶酚亚磷酸酯可以增加基础油的润滑性。

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。