三价铬,trivalent chromium
1)trivalent chromium三价铬
1.Study on Trivalent Chromium Electroplating Process in Chloride System;氯化物体系三价铬电镀工艺研究
2.Corrosion resistance comparison oftrivalent chromium passivation film on zinc based on different zinc plating processes;不同镀锌层的三价铬钝化膜耐蚀性能比较
英文短句/例句
1.A Study on Reducing Reaction of Creating Trivalent Cr for Cr Electroplating from Hexavalent Cr以六价铬还原作铬源的三价铬电镀工艺的研究
2.Study On Trivalent Chromium Plating Process and Properties of Chromium Layer;环保型三价铬镀铬工艺及铬层性质初探
3.Effect of Cr~(3+) on Performance of Cr Plating Solution & Cr Plating Layer Quality;三价铬对镀铬液性能及镀铬层质量的影响
4.The major advantages and disadvantages of trivalent chromium electroplating were introduced.介绍了三价铬镀铬的主要优点与缺点。
5.Analysis and control of the behavior of tervalence chromium in the chromium electro - deposition process;电镀铬生产中三价铬行为分析及控制
6.Effect of Fe~(2+) on Chromium Electroplating in Sulfate Trivalent Chromum Plating BathFe~(2+)对硫酸盐三价铬镀液镀铬的影响
7.Evaluation on positive results in the determination of hexavalent chromium in trivalent chromium passivation coatings三价铬钝化件六价铬检出阳性问题及其评价
8.Effects of Unsaturated Oils with Different Iodine Value on Oxidization of Chrome(Ⅲ) into Chrome(Ⅵ)不同碘值的油脂对三价铬氧化为六价铬的影响
9.Study of complexing agent in low concentration of trivalent chromium sulfate system低浓度硫酸铬体系三价铬电镀配位剂的研究
10.A Research on the Process and Coating Performance of Sulfate System Cr~(3+) Chromium Plating硫酸盐体系三价铬镀铬工艺及镀层性能的研究
11.Effect of auxiliary coordination agent in the deposition of chromium from chromic sulfate electrolyte三价铬硫酸盐溶液镀硬铬的辅助配位剂研究
12.Effect of Rare Earth Element on Sulfate Trivalent Chromium Plating Process稀土元素对硫酸盐三价铬镀铬工艺的影响
13.Cr~(+8) Electroplating Process With formate and Acetate System甲酸盐——乙酸盐体系三价铬电镀工艺
14.Study of Trivalent Chromium Bright Blue Passivation Process for Zinc Coating镀锌层三价铬蓝白色钝化工艺的研究
15.Study on Reaction between Hydroxyl Free Radical Oxide(·OH) and Cr(Ⅲ)关于羟自由基氧化三价铬问题的探究
16.EFFECT OF TRIVALENT CHROMIUM ON IMMUNE FUNCTION OF HEAT-STRESSED RATS三价铬对热应激大鼠免疫功能的影响
17.Direct Determination of Hexavalent Chromium in Trivalent Chromium Plating Bath电镀三价铬镀液中Cr~(6+)的直接测定
18.Study of Trivalent chromium passivation technology for iridescent passivation with no hexavalent chromium in passivaton film抑制钝化层六价铬形成的三价铬彩色钝化液及其工艺研究
相关短句/例句
Cr(Ⅲ)三价铬
1.Cr(Ⅲ) passivation possesses as good performance as Cr(Ⅵ) passivation, but .三价铬钝化在许多方面具有与六价铬钝化相似的性质,而毒性却只有六价铬的1%,是六价铬钝化最有可能被接受的替代品,得到了研究者的广泛关注。
2.Different kind of Cr-free passivation,the characters and mechanism of Cr(Ⅲ)passivation was briefly introduced.简述了镀锌板无铬钝化的各种类型以及三价铬钝化的特点与机理。
3)trivalent chrome三价铬
1.The effects of the components oftrivalent chrome passivation bath on the appearance and corrosion resistance of the passivating film are investigated.研究了三价铬黑色钝化液组分对钝化层外观和耐蚀性的影响。
2.The bath compositions oftrivalent chrome black passivation for zinc plating coating were optimized by orthogonal test method and the effects of operation conditions on the appearance and the corrosion resistance of the passivation film were investigated.采用正交试验法对镀锌层三价铬黑色钝化工艺组分进行优化,研究了工艺参数对钝化膜外观和耐蚀性的影响。
3.The bath compositions oftrivalent chrome black passivation for zinc-iron alloy coating were optimized by orthogonal test method.采用正交试验法对锌-铁合金镀层三价铬黑色钝化工艺进行优化,并研究了工艺参数对钝化膜外观和耐蚀性等影响。
4)trivalent chromium sulfate plating三价铬镀铬
1.The influence of impurity of Cu2+, Zn2+, Ni2+and Fe2+ (content of 50 mg/kg) on deposit’s appearance, thickness and bath’s polarization was discussed in process oftrivalent chromium sulfate plating.研究了硫酸盐三价铬镀铬工艺中铜、锌、铁、镍离子(含量均为50mg/kg)对镀层外观和厚度、镀液极化的影响,比较了不同除杂方法的除杂效果。
5)trivalent chromium solution三价铬液
6)chromic[英]["kr?umik][美]["krom?k]三价铬的
延伸阅读
六价铬分子式：CAS号：性质：为以铬酸盐(-CrO4)和重铬酸盐(-Cr2O7)形式存在的铬。溶于水，在水体中稳定，在厌氧条件下可还原成三价铬。三价铬和六价铬对人体健康都有害，有致癌作用。但六价铬的毒性更强，大约比三价铬高100倍，更易被人体吸收，并在体内蓄积。工业废水如电镀废液中的铬主要是六价化合物，在排放前需进行处理。方法是在酸性条件下，通过化学还原反应使之变成三价铬，或是用离子交换法将其除去。中国规定生活饮用水和地面水中六价铬的最高容许浓度为0.05mg/L；工业废水中六价铬及其化合物的最高容许排放浓度0.5mg/L。
