本文目录一览:
- 1、镀镍和镀铬如何区别
- 2、镀镍与镀铬用途及区别
- 3、镀镍,镀铬的区别和优点
- 4、镀铬和镀镍的区别
- 5、镀锌,镀镍,镀铬区别在哪里,各有什么好处
镀镍和镀铬如何区别
镀镍特点:美观,可以做装饰,价格高,工艺略复杂,颜色为银白显黄色。对于铁基
体而言是阴极性镀层,且空隙率较高,所以单一镀层防腐性能不高。
举例:节能灯灯头
镀铬特点:镀铬(确切讲,应该是称防护——装饰性镀铬),外表光亮、耐磨擦性能较
好,防锈能力不如镀锌,优于氧化。主要用于有较高装饰要求的场合使用。
镀镍与镀铬用途及区别
镀镍是提高耐腐蚀,提高表面硬度。很厚的镀层能平整表面,为下一道镀层打底,镀铬也能提高耐腐,使表面光亮,其成本高,多用于外观方面。
镀镍,镀铬的区别和优点
铬是一种微带蓝色的亮白色金属,通过电解或化学 *** 在金属或某些非金属上镀上一层铬的 *** ,称为镀铬。
特点:镀铬有两种,之一种是起装饰作用,外表光亮、耐磨擦性能较好,防锈能力不如镀锌,优于氧化;第二种是增加金属零件的硬度、耐磨性等,这是零件的功能性。
应用:家电、电子等产品上的的光亮装饰件,工具,水龙头等。
镀铬主要是提高表面硬度,美观,防锈。铬镀层具有良好的化学稳定性,在碱、硫化物、硝酸和大多数有机酸中均不发生作用,但能溶于氢卤酸(如盐酸)和热的 *** 中。 因铬不变色,使用时能长久保持其反射能力而优于银和镍。 工艺一般都是电镀。
镀镍通过电解或化学 *** 在金属或某些非金属上镀上一层镍的 *** ,称为镀镍。
特点:美观,可以做装饰,价格高,工艺略复杂,颜色为银白显黄色。
应用:节能灯灯头、硬币,五金件等。主要是耐磨,防腐蚀,防锈,一般厚度较薄,工艺的话分电镀和化学两类。
成本方面的区别镀铬最贵,镍其次。
镀铬和镀镍的区别
常说的镀铬是镀的装饰铬,颜色要光亮些,接近银色。镀镍,颜色要偏黄点。镀铬的单价要稍高过镀镍。镀铬的均匀性要稍好过镀镍。当然,也要看客人需求。镀铬的盐雾测试时间要长镀镍。
镀锌,镀镍,镀铬区别在哪里,各有什么好处
区别:外观颜色不同。
1)镀锌外观银白色。
2)镀镍外观银白偏黄。
3)镀铬分装饰铬和硬铬外观亮白偏蓝。
有良好延展性,具有中等硬度。镍是银白色金属,具有磁性和良好的可塑性。有好的耐腐蚀性,镍近似银白色、硬而有延展性并具有铁磁性的金属元素,它能够高度磨光和抗腐蚀。溶于硝酸后,呈绿色。主要用于合金(如镍钢和镍银)及用作催化剂(如兰尼镍,尤指用作氢化的催化剂)。
矿产分布:
世界上红土镍矿分布在赤道线南北30度以内的热带国家,集中分布在环太平洋的热带―亚热带地区,主要有:美洲的古巴、巴西;东南亚的印度尼西亚、菲律宾;大洋洲的澳大利亚、新喀里多尼亚、巴布亚新几内亚等。
中国镍矿分布就大区来看,主要分布在西北、西南和东北,其保有储量占全国总储量的比例分别为76.8%、12.1%、4.9%。就各省(区)来看,甘肃储量最多,占全国镍矿总储量的62%,其次是新疆(11.6%)、云南(8.9%)。
吉林(4.4%)、湖北(3.4%)和四川(3.3%)。其中甘肃金昌的铜镍共生矿床,镍资源储量巨大,仅次于加拿大萨德伯里镍矿,居世界第二,亚洲之一。
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