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1.发明公开PASSIVATION OF MICRO-DISCONTINUOUS CHROMIUM DEPOSITED FROM A TRIVALENT ELECTROLYTE 审中-公开PASSIVIERUNG VON AUS EINEM DREIWERTIGEN ELEKTROLYT ABGESCHIEDENEN MIKRO-DISKONTINUIERLICHEN CHROM
公开(公告)号：EP3114258A1
公开(公告)日：2017-01-11
申请号：EP15757833.7
申请日：2015-03-05
CPC分类号： C25D3/06 , C25D5/48 , C25D9/08 , Y10T428/12854
摘要： A method of treating a substrate, wherein the substrate comprises a layer deposited from a trivalent chromium electrolyte, is described. The method includes the steps of providing an anode and the chromium(III) plated substrate as a cathode in an electrolyte comprising (i) a trivalent chromium salt; and (ii) a complexant; and passing an electrical current between the anode and the cathode to passivate the chromium(III) plated substrate. The substrate may be first plated with a plated nickel layer so that the chromium(III) plated layer is deposited over the nickel plated layer.
摘要翻译： 描述了一种处理衬底的方法，其中衬底包括由三价铬电解质沉积的层。 该方法包括以下步骤：在电解质中提供阳极和镀有铬（III）的底物作为阴极，包括（i）三价铬盐; 和（ii）复合物; 并在阳极和阴极之间通过电流以钝化镀铬（III）的衬底。 基板可以首先镀覆镀镍层，以使镀铬层（III）沉积在镀镍层上。
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2.发明公开
公开(公告)号：EP2815002A1
公开(公告)日：2014-12-24
申请号：EP13749579.2
申请日：2013-02-05
发明人： HINGLEY, Stacey , TOOTH, Richard , CLARKE, Terence
IPC分类号： C25D3/06
摘要： A method of adjusting and controlling the color of trivalent chromium deposits is provided. The method includes the steps of: (a) measuring the color of a trivalent chromium deposit standard; (b) adding one or more color enhancing additives to a trivalent chromium electrolyte; (c) contacting the substrate with the trivalent chromium electrolyte containing the one or more color enhancing additives to deposit trivalent chromium on the substrate; (d) measuring the color of the color-enhanced trivalent chromium deposit; (e) comparing the color of the color-enhanced chromium deposit to that of the standard; and (f) if necessary, adjusting the amount of the one or more color enhancing additives added to the trivalent chromium electrolyte if the color of the color-enhanced chromium deposit is outside of a desired optical variation from that of the standard color-enhanced chromium deposit. The color of the trivalent chromium deposit may be measured using a spectrophotometer.
摘要翻译： 提供了调节和控制三价铬沉积物的颜色的方法。 该方法包括以下步骤：（a）测量三价铬沉积物标准品的颜色; （b）向三价铬电解质中加入一种或多种增色添加剂; （c）使基材与含有一种或多种增色添加剂的三价铬电解质接触，以在基板上沉积三价铬; （d）测量增色三价铬沉积物的颜色; （e）将增色铬沉积物的颜色与标准物的颜色进行比较; 和（f）如果需要，调整添加到三价铬电解质中的一种或多种着色增强添加剂的量，如果增色铬沉积物的颜色在与标准增色铬的所需光学变化之外 存款。 可以使用分光光度计测量三价铬沉积物的颜色。
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公开(公告)号：EP3114258B1
公开(公告)日：2020-05-06
申请号：EP15757833.7
申请日：2015-03-05
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公开(公告)号：EP2635723A1
公开(公告)日：2013-09-11
申请号：EP11838391.8
申请日：2011-08-16
IPC分类号： C25D3/04
摘要： An aqueous acidic trivalent chromium electrolyte comprising trivalent chromium ions and a complexing agent for maintaining the trivalent chromium ions in solution is provided in which the aqueous electrolyte comprises additives capable of producing a coating on a substrate having a desired dark hue. The additives typically comprise a dispersion of colloidal silica and an additional additive selected from thiocyanate ions and/or iron ions. The electrolyte is used in a method of producing the desired dark-hued decorative chromium coating on a substrate by electrodeposition.
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公开(公告)号：EP3690084A1
公开(公告)日：2020-08-05
申请号：EP20164912.6
申请日：2015-03-05
摘要： A method of treating a substrate, wherein the substrate comprises a layer deposited from a trivalent chromium electrolyte, is described. The method includes the steps of providing an anode and the chromium(III) plated substrate as a cathode in an electrolyte comprising (i) a trivalent chromium salt; and (ii) a complexant; and passing an electrical current between the anode and the cathode to passivate the chromium(III) plated substrate. The substrate may be first plated with a plated nickel layer so that the chromium(III) plated layer is deposited over the nickel plated layer.
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公开(公告)号：EP2635723B1
公开(公告)日：2020-05-06
申请号：EP11838391.8
申请日：2011-08-16
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