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.
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.
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.
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