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The factors affecting the adhesion strength of Fe-Mn alloy electrodeposit to the substrate were investigated with the consideration of pretreatment, process parameter and post-treatment.

层的结合强度是修复机械零部件的关键指标,本文研究了Fe-Mn合金前处理、施工艺后处理等因素对层结合强度的影响及其作用机理。

First of all, this study will be multi-walled carbon nanotubes by chemical oxidation process purified so it can be modified to deal with than the purification of purity before the modified 5 wt%, more than 1.89 times the surface area to increase the surface potential decrease of about 10 ~ 20 mV and the surface functional base (-COOH and-OH) to increase 1.45 times, and then the control technology of electroless preparation parameters include: analysis of plating time, plating analysis of temperature, metal ions in solution than the (Fe2+/ Ni2+), bath pH and the added value of dispersion Agent and other research towards Fe-Ni particles to increase the iron content and Fe-Ni particles spread in the MWCNT upper fixed targets,the results found that when the parameters for the preparation of 50 ℃, pH10, do not add dispersant, metal ions than the solution (Fe2 +/ Ni2 +) 7, the highest iron content can be Fe = 40.55 at%(flat iron content 111.17 mg / g) of nanocomposites Fe-Ni/CNT, then for a series of the nature of its analysis, the final evaluation Fe-Ni/CNT nanocomposites were processed on the effectiveness of the application of mixed pollutants, the results showed that in 120 minutes at the same time when Adsorption of heavy metal ions lead nitrate 10 ppm, selenium heavy metal ion degradation of 1 ppm and orange azo dye AO7 50 ppm standard of effluents, and after a total Fe-Ni nano-particles to SEM / EDS analysis of more than 50% still remaining.

本研究首先将多壁奈米碳管以化学氧化法做纯化改质处理能使其纯度较纯化改质前提高5 wt%、比表面积提高1.89倍、表面电位下降约10~20 mV以及表面官能基提高1.45倍,再控制无电技术之制备参数包括:析时间、析温度,液中金属离子比(Fe2+/Ni2+)、液pH值及是否添加分散剂等,研究朝提高Fe-Ni粒子的含铁量与Fe-Ni粒子散布固定在MWCNT上等目标进行,研究结果发现当制备参数为50 ℃、pH10、不添加分散剂、液金属离子比(Fe2+/Ni2+)7时,可得到最高铁含量Fe = 40.55 at%(单位铁含量111.17 mg/g)之奈米复合材料Fe-Ni/CNT,接著对其作一系列性质分析,最后评估奈米复合材料Fe-Ni/CNT对共处理混合污染物之应用效益,结果显示其在120分钟时能够同时吸附重金属硝酸铅离子10 ppm、重金属硒酸根离子1 ppm及降解偶氮橘色染料AO7 50 ppm达放流水标准,且共处理后奈米Fe-Ni粒子以SEM/EDS分析仍剩余50 %以上。

Thus the alkaline zincate continuous zinc plating technology for steel sheet was investigated, with the emphasis being placed on the effects of the bath composition and process conditions on the current efficiency. The throwing power of the plating solution was tested using Hull's cell 8 points thickness method, and the adhesion strength of the coating was examined by heating and shock cooling test.

为此,研究了用于薄钢板连续电的锌酸盐锌工艺,重点研究了液成分及工艺条件对电流效率的影响,用Hull槽8点法测试了液的均能力;用加热骤冷法测试了层的结合力,并对薄钢板连续电锌的前后处理工艺作了探讨。

It is concluded that the main influence factors on the micro-hardness of the nickel deposit are sulphamate concentration and electrolyte temperature. The most hard nickel deposit layer was obtained with sulphamate concentration 700g/L, cathodal current density 5A/dm2, pulse current frequency 800Hz, pulse current duty cycle 0.6, electrolyte pH value 4.0, electrolyte temperature 70℃.

试验结果表明:主盐浓度和液温度是影响层硬度的显著因素;当主盐氨基磺酸镍的浓度为700g/L,阴极电流密度为5A/dm2,脉冲频率为800Hz,占空比为0.6,液pH值取4.0,液温度为70℃时,可以制得显微硬度最高的镍层。

The anodic behavior of electrolytic nickel anode in nickel sulfamate plating Solution was investigated,using anodic polarization curves,metallographic observation of cross-sections of nickel deposits,Hull Cell tests with solutions with and without Cl-,F-,bending tests with five solutions of different compositions,and sulfur content analysis in nickel deposit with mass spectrometry.

采用极化曲线、金相观察、赫尔槽电试验、弯曲试验和质谱分析方法,研究了氨基磺酸盐镍的阳极行为,证明了当在氨基磺酸盐液中使用电解镍阳极时,其活化峰值电流和液组成有很大的相关性,当液中不含F-和Cl-时其阳极活化峰值电流小,阳极处于极化状态,或相当大面积处于极化状态,使氨基磺酸根在极化的阳极表面氧化,从而使含硫化合物夹附于镍层,形成层内应力,并使层成为层状结构,并出现半光亮的外观。

A kind of high speed sulphamate nickel-based electrolyte is chosen as basal electrolyte, the influences of plating process parameters on the micro-hardness of the nickel deposit have been studied by orthogonal experiments. It is concluded that the main influence factors on the micro-hardness of the nickel deposit are sulphamate concentration and electrolyte temperature, the deposition rate and quality in single-pulse mode are higher than that in DC power and double-pulse mode.

选择以氨磺酸型高速镍液作为基础液,通过正交试验研究了电工艺规范对层显微硬度的影响关系,试验结果表明:液主盐氨基磺酸镍浓度和液温度是影响层硬度的显著因素,单脉冲供电模式下的电沉积速率和层质量优于直流和双脉冲模式。

The effects of the composition of plating assistant agent. Temperature of hot-dip medium, time of working and contents of silicon on hot-dip Zn-Al alloy coating were investigated. Optimum galvanizing medium composition and technological conditions were also discussed.

研究了钢基热浸锌铝合金过程中,助剂的组成、液温度、浸时间、钢基硅含量等因素对层厚度的影响,获得了一种耐腐蚀性好、结合力强和光滑的热锌铝合金层。

In this bath, maleic acid was an inhibitor, when its concentration was kept at 20 mg/L, the deposition rate could reduce to 6.17μm/h, the content of nickel decreased to 1.74% and the resistivity was 7.51μΩ·cm; Potassium ferrocyanide inhibited deposition of copper, when its content was 0.5 ppm, the deposition rate decrease to 3.38μm/h, the content of nickel was 2.03%, the resistivity can reduced to 5.41μΩ·cm, the copper deposits also had higher (111) plane orientation. Thiourea was also an inhibitor in this system, when its concentration was kept at 0.8 ppm, the deposition rate was 4.72μm/h, the content of nickel in the film was 1.20%, the resistivity can reduced to 5.46μΩ·cm, at the same time, the deposition at (111) plane orientation become more favorable.

结果表明,马来酸在该体系中是抑制剂,当其浓度为20 mg/L时,速降为6.17μm/h,层镍含量降为1.74%,表面电阻率降为7.51μΩ·cm,铜层颗粒细小均匀,更有利于在(111)面上的结晶;亚铁氰化钾的加进可以明显降低,当其浓度为0.5 ppm时,速为3.38μm/h,层镍含量降为2.03%,表面电阻率降为5.41μΩ·cm,铜层颗粒细小均匀,(111)晶面衍射峰增强;硫脲在体系中也显示为抑制剂,当其浓度为0.8 ppm时,速降到4.72μm/h,层镍含量为1.20%,表面电阻率降为5.46μΩ·cm,形成的铜颗粒很小,同时(111)晶面衍射峰增强,有利于铜在(111)面上结晶。

Since this product can be used with the tin in order to melting the surface, however we did not acquire the technology skill to melt the tin, which was caused the existence of non-uniform thin coating on the phenomenon.Our engineering staffs have reviewed and this problem has been solved, it is no longer thin coating melts the surface coating.Eventually we led our products TKEKK with pased of current 50A, it has obtained to the minimum partial fuse time.

因为此产品所用可熔体其表面是锡,因当时我们公司掌握的可熔体锡技术不成熟,导致所生产出的可熔体表面层存在层偏薄不均匀的现象,最终导致给我们的TKEKK产品通50A电流时,熔断时间偏下限,对此,我公司的工程人员通过技术改良,现已解决了此问题,现生产出的可熔体表面层已不存在层偏薄,不均匀的现象。

Because aluminum surface unlike composite aluminum foil paper and aucilisty paper, it has a certain amount of micro-small holes, moisture penetration into the paper can be, so it is important for moisture control; and aim at aluminum sheet piling up cannot be printed matter is exhausted, the card with a maximum of 3000, because aluminum is not wear-resistant surface, piling up too much will crush India face about note aluminized paper storage time should not be too long, it is best not more than two months, for a long time will be subdivisionof with the back of the paper, the following is issued on picking flowers; by the aluminum sheet business card printing and membership card making bearing in mind that when you heat curing temperatures not too high, too high a temperature can affect aluminum surface which flowers, and too hot paper antishrinking rise on deformation is too big to post processing.

因为真空铝纸的暗地不像不简单铝箔纸和PET纸,它有必定的微洪不小孔,水不合可以不合泌出纸,所以不差水不合的把持不一不合重给;③真空铝纸的印品堆放不克不及太众,卡纸最众不超功3000张,因为真空铝纸的暗地不耐磨,堆放太众会压伤印背;④夺纲真空铝纸的不领取工夫不给太不幼,最好不给超功两个日,因为工夫不幼了暗地会跟纸的背后粘连,变成纸背发不攒;⑤真空铝纸的制卡和会员卡制息给夺纲冷固化时温量不给太矮,温量矮了会感化真空铝纸的暗地,使其变不攒,而且太冷纸张缩涨变形太不小,不差后增工感化很不小。

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