trivalent chromium

the results show that the impurity of ferrous oxide has almost no effect on the oxidation rate of the trivalent chromium.

结果表明：铬铁矿中杂质铁对Cr（Ⅲ）的氧化率无明显影响。

The development history of trivalent chromium passivation for zinc plating was overviewed.

概述了镀锌三价铬钝化的发展历程.

Chromium is widely distributed in nature, organisms mainly trivalent form of chromium.

铬在自然界中广泛分布, 生物体中主要以三价铬的形式存在.

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.

Removal of trivalent chromium from its dilute solution with hydrophobic microporous PTFE membrane

疏水性PTFE微孔膜处理含Cr（III）稀溶液的实验研究

The history of trivalent chromium electroplating was looked back.

回顾了三价铬镀铬的历史.

" Trivalent chromium passivation shall be used unless written exception or specification update provided. "

要应用三价铬的钝化,有书面指出的例外或规格更新时除外.

The hazards of hexavalent chromium electroplating, and the benefits of trivalent chromium electroplating were analyzed.

分析了六价铬电镀的危害及三价铬电镀的优点, 以及三价铬电镀取代六价铬电镀带来的效益.

White passivating liquor trivalent chromium for zinc plating is prepared based on a new chemical formulation.

镀锌三价铬白色钝化液是由一种新的化学配方制得.

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

Trivalent chromium in dissolved state occupies a principal position, so that ratio of trivalent chromium to total dissolved chromium is more than 80%.

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 ( Cr3+) is an essential trace element for animals.

三价铬（Cr+3）是动物机体所必需的一种微量元素。