介绍了三价铬镀铬的主要优点与缺点。
The major advantages and disadvantages of trivalent chromium electroplating were introduced.
镀锌为三价铬钝化及六价铬钝化工艺。
Galvanized to trivalent chromium and hexavalent chromium passivation passivation process.
三价铬电镀分为氯化物体系和硫酸盐体系。
Trivalent chromium plating can be divided into chloride and sulfate systems.
选用BH- 88硫酸盐三价铬镀铬工艺。
BH-88 trivalent chromium sulfate plating process was chosen.
对三价铬电解液镀铬的沉积速度进行了实验研究。
The chromium deposition velocity of trivalent chromium electroplating was researched.
碱性溶液所获得的镀锌镀层，采用三价铬溶液钝化。
Following the alkaline zinc plating process, the trivalent chromium passivation process is conducted to provide a protection layer for zinc coating.
铬酸盐转化镀层导致形成钝化膜。只能使用三价铬。
Chromate conversion coating resulting in the formation of a passivating film.
还原生成的三价铬的量或未反应的重铬酸钾的量能被测出。
Either the amount of reduced chromium or the amount of unreacted dichromate can be measured.
甲酸-羧酸a体系是一种低浓度的硫酸盐三价铬电镀工艺。
Formate-A acid system was a sulfate trivalent chromium plating process with low concentration.
三价铬及六价铬是食品中微量元素铬的两种主要存在价态。
Trivalent chromium and hexavalent chromium are two main states of the chromium in foods.
使用电解三价铬再生机后可延长粗化药水的寿命高达3倍。
With this machine, we can make Cr3 + solution life longer 3 times.
提出应用于三价铬钝化前的碱性无氰镀锌及酸性镀锌的适用场合。
The applicable fields of alkaline cyanide-free zinc plating and acidic zinc plating before trivalent chromium passivation were proposed.
三价铬经封闭钝化后，装饰效果、力学性能和抗腐蚀能力会有所提高。
By using tri-chrome passivation with top-coat, the decorating, mechanical performance and corrosion resistance will be all improved.
深圳市（卓越）安特精密工业有限公司专业致力于塑胶电镀、环保三价铬电镀。
Shenzhen (excellent) Ante Precision Industry Co. , Ltd. specializes in plastic plating, green trivalent chromium plating.
在高温下，用碱性过硫酸钾溶液将水样中三价铬氧化为六价铬，比色测定总铬。
Trivalcnt chromium was oxidized to hexavalent chrome by alkaline potassium persulfate under high -temperature. Then total chromium was measured by colorimetry.
三价铬含量偏低时，根据计算加入适量草酸即可很方便地将其控制在最佳范围内。
The concentration of Cr(III)is easily controlled in optimal range by adding a proper amount of oxalic acid when Cr(III)content is low.
维生素C向六价铬的电子转移产生了三价铬—一种不能进入细胞内的复合物形式。
This electron transfer from vitamin C to chromium 6 produces chromium 3, a form of the compound that is unable to enter cells.
利用电化学方法分别研究了晶粒尺寸对纯锌及其表面三价铬钝化膜腐蚀行为的影响。
The effects of grain size on the electrochemical corrosion behaviors of zinc and trivalent chromium passivation film on zinc have been studied respectively by electrochemical methods.
六价铬电镀工艺存在严重的环境污染问题，利用三价铬镀铬取而代之已经迫在眉睫。
It's urgent to develop the technique of trivalent chromium plating because of the heavy pollution of hexavalent chromium plating.
采用直流和脉冲电沉积方式从三价铬的氯化物镀液中沉积出镍-铁-铬纳米合金镀层。
Nickel iron chromium alloy with nanocrystalline were electrodeposited from chloride bath containing trivalent chromium ions under direct and pulse current.
许多动物试验和临床试验均表明，三价铬能影响糖代谢，是人和动物体所必需的微量元素。
There have been numerous experiments on animals and clinic tests confirming trivalent chromium is an essential micronutrient for human and animals, which can affect the metabolism of glucose.
研究人员发现，铬元素的氧化物由六价铬转变为三价铬，这与画作中的铬黄色日趋变暗有关。
The researchers found that a change in the oxidation state of the element chromium (from chromium 6 to chromium 3) was linked to the darkening of chrome yellow paint.
吗啉在高温下将六价铬还原为三价铬，通过测定三价铬离子的吸光度，计算出锅炉给水中吗啉含量。
Hexavalent chrome is reduced to trivalent chrome by morpholine under high temperature conditions. Then morpholine content is calculated by detecting the absorbance of trivalent chromic ion.
三价铬电镀不仅可明显减少电镀对环境的污染，节省大量的污染治理费用，而且还可提高电镀产品的质量。
Trivalent chromium electroplating not only can reduce pollution obviously and save pollution treatment cost, but also can improve the quality of electroplating products.
本文新近研究了一种以甲酸盐-羧酸盐作为络合剂的三价铬电镀新工艺，并对该溶液和镀层进行了性能测试。
In this paper, three types of bath for trivalent chromium plating are gained: chloride-glycine bath, chloride-U bath and sulfate-oxalic bath.
当金属的覆盖层受到扎刺或划损时，受损区域的胶囊将会破裂并渗出具有恢复性的液体- - -三价铬钝化化合物。
When the metal coating is punctured or scratched, the capsules in the damaged area burst and ooze restorative liquids, in the form of compounds called trivalent chromates.
采用工业铬酐-甲醇还原法制备三价铬主盐，给出了电镀铬-镍合金工艺配方与工艺规范并对镀层性能进行了测试。
By the reduction on industrial Chromic anhydride-methanol, the trivalent chromium main salt was made. The technological formula and standard of Chromium-Nickel alloy electroplating were given.
六价铬对总铬比率低于3%，是最次要的形态；三价铬对总溶解铬的比率在80%以上，所以三价铬在溶解态中占主要形态。
Trivalent chromium in dissolved state occupies a principal position, so that ratio of trivalent chromium to total dissolved chromium is more than 80%.
六价铬对总铬比率低于3%，是最次要的形态；三价铬对总溶解铬的比率在80%以上，所以三价铬在溶解态中占主要形态。
Trivalent chromium in dissolved state occupies a principal position, so that ratio of trivalent chromium to total dissolved chromium is more than 80%.
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