CN105369236A - 一种镀锌无铬棕色钝化剂 - Google Patents

一种镀锌无铬棕色钝化剂 Download PDF

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Publication number
CN105369236A
CN105369236A CN201510946229.9A CN201510946229A CN105369236A CN 105369236 A CN105369236 A CN 105369236A CN 201510946229 A CN201510946229 A CN 201510946229A CN 105369236 A CN105369236 A CN 105369236A
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China
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brown
zinc coating
passivating agent
passivator
free
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CN201510946229.9A
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Inventor
石磊
石佳正
刘科高
李岩
李培政
史璐玉
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Shandong Jianzhu University
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Shandong Jianzhu University
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Priority to CN201510946229.9A priority Critical patent/CN105369236A/zh
Publication of CN105369236A publication Critical patent/CN105369236A/zh
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/40—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates

Abstract

本发明涉及了一种镀锌无铬棕色钝化剂，采用钼酸铵、氨水、硝酸钴等物品通过一定的比例溶解混合均匀而成，其能显著提高镀层的耐蚀性能，同时赋予光亮的棕色。

Description

一种镀锌无铬棕色钝化剂
技术领域
本发明涉及一种镀锌无铬棕色钝化剂，尤其涉及一种镀锌无铬棕色钝化剂的成分、各成分的作用及配制方法。
背景技术
镀锌层可以保护基体，有很好的耐蚀作用，经过钝化处理更能显著提高耐腐蚀能力。但在铬酸盐钝化过程中会产生对人体健康有害的气雾,且排出的废水严重污染环境,随着人们环保意识的增强,世界各国政府己开始在环保法规中对铬酸盐的使用和废水的排放作出严格的限制,因此在金属表面处理中禁止使用铬酸盐,最终将成为必然趋势,必须积极开发完全无铬的钝化技术。环保型的钝化主要采用三价铬和无铬钝化两个方向。无铬钝化体系有钛酸盐、钼酸盐、钨酸盐、稀土、硅酸盐，目前这些无铬体系钝化膜无毒环保，近年来耐蚀性和外观都有很大的提高，满足了普通五金件电镀要求，棕色钝化剂应用于家居的镀锌板仿古色的效果，色泽光亮，耐蚀性和外观都有很大的提高。所以棕色钝化剂在家俱，建筑装饰行业及室内装饰方面以及工业上有广泛的应用前景。
发明内容
本发明为了提高镀锌层钝化膜无毒环保，同时使钝化液中不含有Cr 6+ 、Cr 3+ 而发明了一种镀锌无铬棕色钝化剂。
本发明采用钼酸铵、氨水、硝酸钴等物品组成一种镀锌无铬棕色钝化剂。
本发明的具体制备方法包括如下顺序的步骤：
a.将计算量的钼酸铵缓慢加入，搅拌使其充分溶解；
b.将计算量的氨水倒入，搅拌均匀；
d.将计算量的硝酸钴倒入，搅拌均匀，使其充分溶解；
e.将计算量的纯水定容后，静置10分钟，用硝酸调pH在1~2范围内。
本发明所得一种镀锌无铬棕色钝化剂，为澄清洋红色的液体。
实验说明
本发明通过镀锌实验后，在无铬蓝白色钝化液中实施钝化处理，经过不同时间的处理后，观察镀层的色泽，并进行中性盐雾试验测定其耐蚀性能。
具体实施方式
本实施例的具体制备步骤如下：
a.配制通用的低氰镀锌溶液，并调整pH值，进行电镀。
b.一定时间后取出试样，在3%的硝酸中出光后进行钝化处理，钝化时间为60分钟。
c.观察转化膜层的色泽，并进行中性盐雾试验。
一种镀锌无铬棕色钝化剂工艺规范为：钼酸铵、氨水、硝酸钴
钼酸铵20g/L
氨水200ml/L
硝酸钴10g/L
pH1~2
温度室温
钝化时间60分钟
注：当有搅拌时，钝化时间可以缩短。

Claims (1)

1.应用于镀锌层一种镀锌无铬棕色钝化剂，其特征在于钝化剂的原料组成如下:含钼酸铵20g/L、氨水200ml/L、硝酸钴10g/L，其余为纯水；钝化时间60分钟，无铬棕色钝化剂使用时pH值维持在1~2范围内。
CN201510946229.9A 2015-12-17 2015-12-17 一种镀锌无铬棕色钝化剂 Pending CN105369236A (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0448081A (ja) * 1990-06-15 1992-02-18 Yazaki Corp 鉄鋼材料のモリブデン皮膜形成方法
JP2002060963A (ja) * 2000-08-17 2002-02-28 Kawasaki Steel Corp 防食被覆鋼材の製造方法
CN101994109A (zh) * 2009-08-14 2011-03-30 比亚迪股份有限公司 一种不锈钢着色液、制备方法及着色方法
CN104213111A (zh) * 2014-08-26 2014-12-17 华南理工大学 一种用于制备Mo-Co复合转化膜的处理液及其应用
CN104233251A (zh) * 2014-09-16 2014-12-24 朱忠良 一种镀锌层无铬钝化工艺

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0448081A (ja) * 1990-06-15 1992-02-18 Yazaki Corp 鉄鋼材料のモリブデン皮膜形成方法
JP2002060963A (ja) * 2000-08-17 2002-02-28 Kawasaki Steel Corp 防食被覆鋼材の製造方法
CN101994109A (zh) * 2009-08-14 2011-03-30 比亚迪股份有限公司 一种不锈钢着色液、制备方法及着色方法
CN104213111A (zh) * 2014-08-26 2014-12-17 华南理工大学 一种用于制备Mo-Co复合转化膜的处理液及其应用
CN104233251A (zh) * 2014-09-16 2014-12-24 朱忠良 一种镀锌层无铬钝化工艺

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
卢锦堂等: "《热浸镀技术与应用》", 31 January 2006 *
李东光: "《金属表面处理剂配方手册》", 28 April 2015 *
杜安等: "《金属表面着色技术》", 31 March 2012 *
黄永兵: "《镀锌》", 31 May 2006 *

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Application publication date: 20160302