CN101733984A - 黑色的涂布制品 - Google Patents

黑色的涂布制品 Download PDF

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CN101733984A
CN101733984A CN200910206502A CN200910206502A CN101733984A CN 101733984 A CN101733984 A CN 101733984A CN 200910206502 A CN200910206502 A CN 200910206502A CN 200910206502 A CN200910206502 A CN 200910206502A CN 101733984 A CN101733984 A CN 101733984A
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refractory metal
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zirconium
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N·L·彼得森
B·R·安顿
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Abstract

本发明涉及黑色的涂布制品。该制品涂有黑色的涂层。在优选的实施方案中,该涂层包括镍或聚合物底涂层,和由富氧高熔点金属碳氧化物组成的第一有色层,包括富氧高熔点金属碳氧化物的第二有色层,和高熔点金属氧化物的顶层。

Description

黑色的涂布制品
技术领域
本发明涉及制品,特别是例如具有黑色外观的装饰性和防护性涂层的龙头的制品。
背景技术
对于各种黄铜制品,例如龙头、龙头孔罩、门钮、门把手、门锁孔等,现有工业实践是首先将制品的表面打磨和抛光至高光泽度,然后在该抛光表面上施涂保护性有机涂层,例如由丙烯酸类、氨基甲酸酯、环氧化物等组成的涂层。这种系统具有打磨和抛光操作属于劳动密集型的缺点,特别是如果该制品具有复杂的形状。此外,已知的有机涂料并不总是如所需那样耐用,并对由于酸的侵蚀敏感。因此,如果黄铜制品,或实际上塑料的、陶瓷的或金属的其它制品可以配有向制品提供外观装饰以及提供耐磨性、抗磨耗性和耐腐蚀性的涂层,则将是非常有利的。
US 7,270,895代表这种技术的最新发展。该专利公开了一种用深色涂层涂布的制品。优选,颜色为暗灰色或暗青铜色。该涂层包括颜色和保护层,所述保护层由其中氧含量大于碳含量的高熔点金属碳氧化物组成。该高熔点金属典型地为锆。对于在以前不能得到的新外观的研究在继续。
发明内容
本发明涉及一种用黑色的涂层涂布的制品。该涂布的制品具有黑色并且包括基材,该基材具有表面和在该表面的至少一部分上具有顺次包括以下层的多层涂层:
具有氧含量和碳含量的高熔点金属碳氧化物的第一层,其中氧含量大于碳含量,
第一有色层上的第二有色层,其中该第二有色层包括具有氧含量和碳含量的高熔点金属碳氧化物层,其中氧含量大于碳含量;和其中第二有色层的氧含量和碳含量大于第一有色层的氧含量和碳含量;和
第二有色层上的高熔点金属氧化物层。
在优选实施方案中,两个薄的半透明光学层的组合沉积在较厚的暗灰色层上。这三个层的结合性能产生比先前所能实现的暗黑得多的外观。两个薄的光学层沉积在较厚的暗灰色层上。基底层具有灰色,碳氧化锆是优选的。下一个层也是碳氧化锆,但是沉积有更高的氧和碳含量。这一层使外观发黑,并具有光学抵消通常在顶层中看到的黄色的作用,所述黄色为氧化锆。这三个层的结合性能产生比先前所能实现的暗黑得多的外观。
附图说明
图1为其上具有本发明的黑色的一部分基材的不按比例的剖视图。
具体实施方式
本发明涉及一种制品,例如塑料、陶瓷、金属陶瓷或金属制品,其具有沉积在至少一部分表面上的装饰性和防护性涂层。更具体地涉及一种制品或基材,特别是金属制品,例如不锈钢、铝、黄铜或锌制品,具有沉积在表面上的在此所述的层。该涂层是装饰性的,还提供耐腐蚀性、耐磨性和抗磨耗性。该涂层提供黑色外观。
优选,第一有色层的高熔点金属为铪、钽、锆、钛或锆-钛合金。更优选,第一有色层的高熔点金属为锆。第一有色层的高熔点金属碳氧化物为碳氧化锆。优选,第一有色层的高熔点金属碳氧化物为30至40原子百分数氧,10至20原子百分数碳和50至60原子百分数高熔点金属。更优选,第一有色层的高熔点金属碳氧化物为10原子百分数碳和30至40原子百分数氧。
第二有色层的高熔点金属优选为铪、钽、锆、钛或锆-钛合金。更优选,第二有色层的高熔点金属为锆。优选,第二有色层的高熔点金属碳氧化物为碳氧化锆。优选,第二有色层的高熔点金属碳氧化物为30至50原子百分数氧,10至30原子百分数碳和30至50原子百分数高熔点金属。更优选,第二有色层的高熔点金属碳氧化物为10原子百分数碳和30至50原子百分数氧。
通常,高熔点金属氧化物顶层为氧化铪、氧化钽、氧化锆或氧化钛。优选高熔点金属氧化物顶层为氧化锆。
图1显示制品10包括基材12。基材12可以由任何材料组成,其上可以施加板状层,例如塑料,例如ABS、聚烯烃、聚氯乙烯和苯酚甲醛,陶瓷,金属陶瓷,金属或金属合金。在一个实施方案中,其由例如铜、钢、黄铜、锌、铝、镍合金等的金属或金属合金组成。
在本发明中,如图1中所示,第一层或系列层通过镀覆,例如在镍底涂层的情况下电镀,施加在制品表面上。在聚合物底涂层的情况下,聚合物由传统方法施涂。第二系列层由汽相沉积施加在一个或多个底涂层的表面上。聚合物或电镀层特别起使制品表面平整的底涂层的作用,和起提高耐腐蚀性的腐蚀阻挡层的作用。在本发明的一个实施方案中,镍层14可以沉积在制品表面上。镍层可以为由镀覆沉积的任何常规镍,例如光亮镍、半光亮镍、缎纹镍等。镍层14可以由常规和公知的电镀方法沉积在基材12的至少一部分表面上。层14可以为一个或多个铜、镍和铬层。这些腐蚀保护层是本领域中公知的。
层14可以由施涂在制品10表面上的聚合物组成作为底涂层。第二系列层由汽相沉积施加在聚合物层的表面上。聚合物层特别起使制品表面平整的底涂层的作用,和起提高耐腐蚀性的腐蚀阻挡层的作用。在本发明中,聚合物层14可以沉积在制品表面上。
聚合物底涂层14可以由热塑性和热固性聚合物或树脂材料组成。这些聚合物或树脂材料包括公知的、常规的和市售的聚碳酸酯、环氧型聚氨酯、聚丙烯酸酯、聚甲基丙烯酸酯、尼龙、聚酯、聚丙烯、聚环氧、醇酸树脂和含苯乙烯聚合物,例如聚苯乙烯、苯乙烯-丙烯腈(SAN)、苯乙烯-丁二烯、丙烯腈-丁二烯-苯乙烯(ABS),及其共混物和共聚物。层14的聚合物是本领域公知的。
通过汽相沉积,例如物理汽相沉积或化学汽相沉积,在层14上沉积保护性和装饰性的有色层16。有色层16由一层具有氧含量和碳含量的高熔点金属碳氧化物组成,其中氧含量大于碳含量。
第二有色层18沉积在第一有色层16上。第二有色层18包括具有氧含量和碳含量的高熔点金属碳氧化物层,其中氧含量大于碳含量;和其中第二有色层18的氧含量和碳含量大于第一有色层16的氧含量和碳含量。
有色和保护层16和18的厚度为至少有效提供暗灰色颜色和提供抗磨耗性、抗划性和耐磨性的厚度。通常,该厚度为至少约1,000
Figure G2009102065029D0000031
优选至少约1,500
Figure G2009102065029D0000032
和更优选至少约2,500
Figure G2009102065029D0000033
厚度上限范围通常并非关键,取决于例如成本的次要因素。通常厚度不应超过约7500优选约5000
层16和18由常规的和公知的技术沉积,所述技术包括汽相沉积技术,例如阴极电弧蒸发(CAE)或溅射等。溅射和CAE技术和设备特别公开在J.Vossen和W.Kern“Thin Film Processes II”,Academic Press,1991;R.Boxman等人,“Handbook of Vacuum Arc Science and Technology”,Noyes Pub.,1995;及US 4,162,954和4,591,418中,在此将其全部引入作为参考。
沉积层16和18的一个方法是通过利用反应性溅射或反应性阴极电弧蒸发的物理汽相沉积。反应性阴极电弧蒸发和反应性溅射通常类似于普通的溅射和阴极电弧蒸发,除了将反应性气体引入腔室与驱出的(dislodged)目标材料反应。
接下来,高熔点金属氧化物层20沉积在第二有色层18上。高熔点金属氧化物包括铪、钽、锆、钛和钛-锆合金的氧化物。通常,层20的厚度为至少约60
Figure G2009102065029D0000043
优选至少约120
Figure G2009102065029D0000044
和更优选至少约250
Figure G2009102065029D0000045
但是层20通常不应厚于约1.2μm,优选约0.5μm,和更优选约0.25μm。
层20由常规的和公知的汽相沉积技术沉积,所述技术包括物理汽相沉积技术,例如阴极电弧蒸发(CAE)或溅射。简要地,在溅射沉积方法中,高熔点金属(例如钛或锆)目标物,其为阴极,与基材一起放入真空室中。抽空腔室中的空气,在腔室中产生真空状态。将惰性气体,例如氩气,引入腔室中。使气体颗粒离子化,并使其向目标物加速,以驱出钛或锆原子。驱出的目标材料然后通常以涂膜的形式沉积在基材上。
在阴极电弧蒸发中,通常几百安培的电弧冲击在例如锆或钛的金属阴极的表面上。电弧使阴极材料汽化,其然后凝结在基材上形成涂层。
为了可以更容易地理解本发明,提供以下实施例。实施例是说明性的,本发明并不限于实施例。
实施例I
将黄铜龙头放入常规的浸泡清洁剂浴中,所述浴包含标准的和公知的皂、洗涤剂、去污剂(defloculant)等,保持在8.9-9.2的pH和180-200°F的温度约10分钟。然后将黄铜龙头放入常规的超声波碱性清洁剂浴中。该超声波清洁剂浴具有8.9-9.2的pH,保持在约160-180°F的温度下,包含常规的和公知的皂、洗涤剂、去污剂等。超声清洁龙头之后,冲洗龙头并将其放入常规的碱性电镀清洁剂浴中。
电镀清洁剂浴保持在约140-180°F的温度,约10.5-11.5的pH下,并且包含标准的和常规的洗涤剂。然后冲洗龙头两次并放入常规的酸活化剂浴中。酸活化剂浴具有约2.0-3.0的pH,处于环境温度,并包含氟化钠基酸性盐。然后冲洗龙头两次并放入光亮镀镍浴中约12分钟。光亮镍浴通常为保持在约130-150°F的温度,约4.0的pH下,包含NiSO4、NiCl2、硼酸和增亮剂的常规浴。在龙头表面上沉积约10μm的平均厚度的光亮镍层。
冲洗该光亮镀镍龙头三遍,然后放入使用常规镀铬设备的常规市售六价铬镀覆浴中约七分钟。该六价铬浴为包含约32盎司/加仑铬酸的常规和公知的浴。该浴还包含常规和公知的镀铬添加剂。浴保持在约112-116°F的温度下,并使用混合的硫酸盐/氟化物催化剂。铬酸对硫酸盐比率为约200∶1。在光亮镍层表面上沉积约0.25μm的铬层。在去离子水中彻底冲洗龙头,然后干燥。
将镀铬龙头放入阴极电弧蒸发镀覆容器中。该容器通常为包含适合于通过泵抽空的真空室的圆柱形罩。通过调节阀将氩气源连接到该室,所述调节阀用于改变氩气进入室的流速。此外,通过调节阀将甲烷和氧气源连接到该室,所述调节阀用于改变甲烷和氧气进入室的流速。
将圆柱形阴极安装在室中心并连接到可变D.C.电源的负输出端。将电源的正极侧连接到室壁。阴极材料包括锆。
将镀覆的龙头安装在转轴上,所述转轴安装在围绕阴极外侧的环上。整个环围绕阴极旋转,同时每个转轴还围绕其自身轴旋转,产生所谓的行星运动,这样使得围绕每个转轴安装的多个龙头均匀暴露于阴极。该环通常以几rpm旋转,同时环每转一圈,每个转轴旋转几圈。转轴与室电隔离,并装有可旋转触点,使得在涂布过程中可以向基材施加偏压。
将真空室抽空至约10-5至10-7托的压力,并加热至约150℃。
然后使电镀龙头经历高偏压电弧等离子体清洁,在其中向电镀龙头施加约-600伏的(负)偏压,同时大约500安培的电弧在阴极上冲击和持续。清洁的持续时间为大约五分钟。
现在沉积碳氧化锆有色层16。将甲烷流引入真空室,同时以大约500安培继续电弧放电。为了增加涂层的暗色,也可以将全部气流的总计30至40%的氧气流引入室中,以产生暗灰色颜色。提高甲烷流速,由此所得层包含10至20原子百分数的碳含量。
接下来在层16上沉积碳氧化锆有色层18。将甲烷流引入真空室,同时以大约500安培继续电弧放电。为了增加涂层的暗色,也可以将全部气流的总计30至40%的氧气流引入室中,以产生暗灰色颜色。提高甲烷流速,由此所得层包含10至20原子百分数的碳含量。该碳氧化锆层沉积之后,引入每分钟大约100至500标准升的氧气流大约10至60秒。形成厚度为约20至100
Figure G2009102065029D0000061
的氧化锆薄层。熄灭电弧,放空真空室,以及移出涂布的制品。
该碳氧化锆层沉积之后,引入每分钟大约100至500标准升的氧气流约1至5分钟。形成厚度为约100至1000
Figure G2009102065029D0000062
的氧化锆薄层。一至五分钟时段期间沉积平均厚度为约0.1μm的氧化锆层(顶层20)。熄灭电弧,放空真空室,以及移出涂布的制品。阴极电弧淀积方法包括向阴极施加D.C.电源,获得约500安培的电流,在容器中引入氩气,使容器中的压力保持在约1至5毫托,以上述行星方式旋转龙头。
实施例II
实施例I中,层16和18的最终颜色的色域为灰色和青铜色。使用D65发光体,在彩色分光光度计上测量这些。
如已知的,通过三个特殊参数确定颜色的测量,其中“L”为物体亮度的量度,“a”为红色(正值)或绿色(负值)的量度,和“b”为黄色(正值)或蓝色(负值)的量度。这三个参数一起确定特殊的颜色。
测定的制品10的黑色落入以下范围。
制品10
黑色:
L*=40.0+/-5.0
a*=0.00+/-2.0
b*=0.00+/-3.0
基底层具有灰色,碳氧化锆是优选的。下一个层也是碳氧化锆,但是沉积有更高的氧和碳含量。这一层使外观发黑,并具有光学抵消通常在顶层中看到的黄色的作用,所述黄色为氧化锆。这三个层的结合性能产生比先前所能实现的暗黑得多的外观。
虽然已经为了说明的目的描述了一些本发明的实施方案,但是应理解在本发明的总体范围内可以存在各种实施方案和改进。

Claims (15)

1.一种黑色的涂布制品,包括具有表面和在该表面至少一部分上具有多层涂层的基材,所述多层涂层依次包括:
具有氧含量和碳含量的高熔点金属碳氧化物的第一层,其中氧含量大于碳含量,
第一有色层上的第二有色层,其中该第二有色层包括具有氧含量和碳含量的高熔点金属碳氧化物层,其中氧含量大于碳含量;和其中第二有色层的氧含量和碳含量大于第一有色层的氧含量和碳含量;和
第二有色层上的高熔点金属氧化物层。
2.权利要求1的制品,其中第一有色层的高熔点金属为铪、钽、锆、钛或锆-钛合金。
3.权利要求1的制品,其中第一有色层的高熔点金属为锆。
4.权利要求1的制品,其中第一有色层的高熔点金属碳氧化物为碳氧化锆。
5.权利要求1的制品,其中第一有色层的高熔点金属碳氧化物为30至40原子百分数氧,10至20原子百分数碳和50至60原子百分数高熔点金属。
6.权利要求1的制品,其中第一有色层的高熔点金属碳氧化物为10原子百分数碳和30至40原子百分数氧。
7.权利要求1的制品,其中第二有色层的高熔点金属为铪、钽、锆、钛或锆-钛合金。
8.权利要求1的制品,其中第二有色层的高熔点金属为锆。
9.权利要求1的制品,其中第二有色层的高熔点金属碳氧化物为碳氧化锆。
10.权利要求1的制品,其中第二有色层的高熔点金属碳氧化物为30至50原子百分数氧,10至30原子百分数碳和30至50原子百分数高熔点金属。
11.权利要求1的制品,其中第二有色层的高熔点金属碳氧化物为10原子百分数碳和30至50原子百分数氧。
12.权利要求1的制品,其中高熔点金属氧化物顶层为氧化铪、氧化钽、氧化锆或氧化钛。
13.权利要求1的制品,其中高熔点金属氧化物顶层为氧化锆。
14.权利要求1的制品,其中第一层具有暗灰色,第二层具有暗灰色,顶层具有黄色,和制品具有黑色。
15.权利要求1的制品,其中第一层为厚层,第二层为薄层,顶层为薄层。
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