查询词典 sodium-lead alloy

The effect of sodium carbonate on the corrosion inhibition of aluminum alloy in sodium chloride solution was investigated by SEM and electrochemical means.

应用电化学实验方法和扫描电子显微镜研究了碳酸钠在氯化钠溶液中时铝合金的缓蚀作用。

The inhibitive mechanism of sodium barbital for aluminium alloy in 3.5 % NaCl solution was investigated by pentidynamic polarization and SEM.

通过极化曲线及扫描电镜研究了巴比妥钠对硬铝合金（LY12CZ）在3.5％NaCl中的缓蚀作用机制。

ABSTRACT The inhibitive mechanism of sodium barbital for aluminium alloy in 3.5% NaCl solution was investigated by potentiodynamic polarization and SEM.

摘 要 通过极化曲线及扫描电镜研究了巴比妥钠对硬铝合金（LY12CZ）在3.5%NaCl中的缓蚀作用机制。

With the addition of sodium barbial, the inhibitive efficiency increases.'Ihe inhibition of sodium barbital results ￡tunfarming a thin conversion film on the surface of aluminum alloy, which increase the resistance of corrosion.

结果表明，巴比妥钠对铝合金具有较好的缓蚀作用并且能提高铝合金在NaCl溶液中抗点蚀的能力，这种能力主要是通过在铝合金的表面形成不溶怀盐转化膜来实现的。

With the addition of sodium barbial, the inhibitive efficiency increases. The inhibi tion of sodium barbital results from forming a thin conversion film on the surfa ce of aluminum alloy, which increase the resistance of corrosion.

结果表明，巴比妥钠对铝合金具有较好的缓蚀作用，并且能提高铝合金在 NaCl溶液中抗点蚀的能力，这种作用主要是通过在铝合金的表面形成不溶性盐转化膜来实现的。

The four conditions are as follows: the molten alloy only with the addition of deoxidant during melting; only applying high-density pulse electric current on castings during solidification; compound addition of grain refiner and sodium modifier, and addition of borax r modifier liquid along with applying pulse electric current during melting.

这4种工艺条件分别为：在合金液熔炼过程中，除了加脱氧剂外不做任何处理；凝固过程中单独施加高密度电脉冲；添加晶粒细化剂和钠盐变质剂混合剂，或者添加硼砂变质细化剂，并施加高密度电脉冲。

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。

In order to research the effect of pH value to properties on coating, on the base of middle-temperature electroless nickel-phosphorus alloy technique, Ni-P alloy has been electrolessly deposited from a acid bath containing sodium acetate as a paregoric and lactic acid and another acid as compound complexing agent.

为了研究pH值对镀层性能的影响，采用中温化学镀镍工艺，以醋酸钠为缓冲剂，以乳酸为络合剂，在酸性体系中化学沉积镍－磷合金。

The invention provides a chemical nickel tungsten phosphorus plating solution for magnesium alloy, which consists of 10-20 g/L of nickel sulfate, 7-15 g/L of sodium tungstate, 29-50 g/L of sodium citrate, 14-30 g/L of sodium hypophosphite, 14-30 g/L of sodium carbonate, 5-12 g/L of ammonium bifluoride, additive accounting for 0.00005-0.003 percent of total weight and the balance being water.

本发明提供的是一种镁合金化学镀镍钨磷镀液。它由硫酸镍10-20g/L、钨酸钠7-15g/L、柠檬酸钠29-50g/L、次亚磷酸钠14-30g/L、碳酸钠14-30g/L、氟化氢铵5-12g/L、占总重量0.00005-0.003％的添加剂和余量的水组成。

The results show that the technical parameters and the concentration of sodium molybdate have obvious effect on the composition of the alloy. The crystal grain size is from 6.2 to 12.7 nm and changes with current density, temperature and the pH value of the electrolyte.The crystalline growth of the alloy accords with the model of three-dimensional growth. The surface morphology is mainly determined by the rate competitions between the growing direction of vertical surface and the expanding direction along the surface towards circumambient. The results of the X-ray data show the presence of the multiphase containing solid solution and intermetallic compound in the deposits. The deposit phases alter from the FeNi and FeMo solid solution to the FeNi and MoNi4structure at 3 A/dm2. The deposits internal stress increases linearly with the decrease of the grain size. The lattice parameter of the deposits are slightly distorted

结果表明：工艺条件和钼酸钠浓度对合金组成的影响较大；所得合金晶粒尺寸为6.2~12.7 nm，并随电流密度、温度和电镀液的pH值的改变而变化；合金的晶体生长符合晶核三维生长模型，镀层表面形貌由平行和垂直于基体的生长速度的相对大小决定；镀层物相为固溶体和金属间化合物的多相结构，当电流密度为3 A/dm2时，镀层物相由FeNi和FeMo固溶相转化为FeNi和

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。