CN108531901A - 一种电镀锌钛盐蓝白钝化液及其制备方法 - Google Patents
一种电镀锌钛盐蓝白钝化液及其制备方法 Download PDFInfo
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- 238000002161 passivation Methods 0.000 title claims abstract description 35
- 239000007788 liquid Substances 0.000 title claims abstract description 25
- 150000003608 titanium Chemical class 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims abstract description 22
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims abstract description 21
- 239000008367 deionised water Substances 0.000 claims abstract description 19
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 19
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 18
- 235000013024 sodium fluoride Nutrition 0.000 claims abstract description 12
- YONPGGFAJWQGJC-UHFFFAOYSA-K titanium(iii) chloride Chemical compound Cl[Ti](Cl)Cl YONPGGFAJWQGJC-UHFFFAOYSA-K 0.000 claims abstract description 12
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims abstract description 12
- 229960001763 zinc sulfate Drugs 0.000 claims abstract description 12
- 229910000368 zinc sulfate Inorganic materials 0.000 claims abstract description 12
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 claims abstract description 11
- YDONNITUKPKTIG-UHFFFAOYSA-N [Nitrilotris(methylene)]trisphosphonic acid Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CP(O)(O)=O YDONNITUKPKTIG-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004317 sodium nitrate Substances 0.000 claims abstract description 11
- 235000010344 sodium nitrate Nutrition 0.000 claims abstract description 11
- MPPQGYCZBNURDG-UHFFFAOYSA-N 2-propionyl-6-dimethylaminonaphthalene Chemical compound C1=C(N(C)C)C=CC2=CC(C(=O)CC)=CC=C21 MPPQGYCZBNURDG-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000011775 sodium fluoride Substances 0.000 claims abstract description 9
- 235000012207 sodium gluconate Nutrition 0.000 claims abstract description 9
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims abstract description 8
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000176 sodium gluconate Substances 0.000 claims abstract description 6
- 229940005574 sodium gluconate Drugs 0.000 claims abstract description 6
- 239000002253 acid Substances 0.000 claims description 5
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 5
- GTTYPHLDORACJW-UHFFFAOYSA-N nitric acid;sodium Chemical compound [Na].O[N+]([O-])=O GTTYPHLDORACJW-UHFFFAOYSA-N 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 18
- 230000007797 corrosion Effects 0.000 abstract description 17
- 229910000831 Steel Inorganic materials 0.000 abstract description 13
- 239000010959 steel Substances 0.000 abstract description 13
- 238000005516 engineering process Methods 0.000 abstract description 10
- 150000003839 salts Chemical class 0.000 abstract description 6
- 241001163841 Albugo ipomoeae-panduratae Species 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 5
- 230000007935 neutral effect Effects 0.000 abstract description 5
- 239000007921 spray Substances 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 239000007769 metal material Substances 0.000 abstract description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052804 chromium Inorganic materials 0.000 abstract description 2
- 239000011651 chromium Substances 0.000 abstract description 2
- 231100000614 poison Toxicity 0.000 abstract description 2
- 230000007096 poisonous effect Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000011701 zinc Substances 0.000 abstract description 2
- 229910052725 zinc Inorganic materials 0.000 abstract description 2
- 238000004381 surface treatment Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 30
- 238000000034 method Methods 0.000 description 10
- 238000009713 electroplating Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 241000219095 Vitis Species 0.000 description 3
- 235000009754 Vitis X bourquina Nutrition 0.000 description 3
- 235000012333 Vitis X labruscana Nutrition 0.000 description 3
- 235000014787 Vitis vinifera Nutrition 0.000 description 3
- UGWKCNDTYUOTQZ-UHFFFAOYSA-N copper;sulfuric acid Chemical compound [Cu].OS(O)(=O)=O UGWKCNDTYUOTQZ-UHFFFAOYSA-N 0.000 description 3
- IDAGXRIGDWCIET-SDFKWCIISA-L disodium;(2s,3s,4s,5r)-2,3,4,5-tetrahydroxyhexanedioate Chemical compound [Na+].[Na+].[O-]C(=O)[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O IDAGXRIGDWCIET-SDFKWCIISA-L 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
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- 235000020679 tap water Nutrition 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 229940001516 sodium nitrate Drugs 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- ODIGIKRIUKFKHP-UHFFFAOYSA-N (n-propan-2-yloxycarbonylanilino) acetate Chemical compound CC(C)OC(=O)N(OC(C)=O)C1=CC=CC=C1 ODIGIKRIUKFKHP-UHFFFAOYSA-N 0.000 description 1
- RZYKUPXRYIOEME-UHFFFAOYSA-N CCCCCCCCCCCC[S] Chemical compound CCCCCCCCCCCC[S] RZYKUPXRYIOEME-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000004902 Softening Agent Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000011825 aerospace material Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004532 chromating Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 229960002163 hydrogen peroxide Drugs 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 125000003258 trimethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- 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
- C23C22/34—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 fluorides or complex fluorides
- C23C22/36—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 fluorides or complex fluorides containing also phosphates
- C23C22/361—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 fluorides or complex fluorides containing also phosphates containing titanium, zirconium or hafnium compounds
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
Abstract
本发明公开了一种电镀锌钛盐蓝白钝化液及其制备方法,属于金属材料表面处理技术领域。本发明所述钝化液的组分及含量为:三氯化钛6~8mL/L、双氧水4~6mL/L、硝酸钠13~17g/L、硫酸锌3~6g/L、葡萄糖酸钠3~7g/L、氟硅酸钠0.2~0.5g/L、氟化钠0.2~0.6g/L、硫酸铜1~3g/L、十二烷基硫酸钠2~5g/L、氨基三亚甲基膦酸5~8mL/L、去离子水,pH值为1.5~2.0。该钝化液不含铬等有毒有害物质,可以用于钢铁件镀锌后处理工艺,使用本发明所述钝化液进行处理后的锌镀层钝化膜为蓝白色,成膜均匀耐腐蚀性能优良,钝化效率高。经中性盐雾试验出现白锈时间超过96小时。
Description
技术领域
本发明涉及一种电镀锌钛盐蓝白钝化液及其制备方法,属于金属材料表面处理技术领域。
背景技术
腐蚀给人类带来的损失是巨大的。据《中国腐蚀调查报告》显示,全世界每90s 就有1t 钢腐蚀成铁锈,世界上每年因腐蚀而报废的金属材料和设备约相当于生产量的20%以上,一些发达国家由于金属腐蚀而造成的经济损失大约占国民经济总产值的2~4%。地球上的有限资源日益枯竭,随着全球工业的发展,除了直接损耗外,腐蚀的问题日趋严重。就世界范围来说,虽然在控制污染和研究的工作在同时进行,防腐技术措施在不断发展,使腐蚀问题得到了一些缓解,但总的来说,金属的腐蚀仍十分严重。
因此,各种防护措施应运而生。其中镀锌钝化防腐较为广泛,应用多种金属防护行业,例如五金机电、航空航天材料、电子设备等行业。钝化技术主要分为银白钝化,蓝白钝化,彩色钝化和黑色钝化,不同钝化工艺得到的钝化膜耐蚀性不同。
蓝白钝化外观简约大方,性能优异,深受市场的青睐,一直是镀锌件最主要的后处理工艺之一,处理后镀锌件呈现淡蓝色,外观光亮,既能保持镀锌件金属本色,又提高了产品的抗蚀性,因此蓝白钝化工艺广泛被应用于各个金属保护行业。但是现有的钝化液技术得到的钝化膜较薄,分布不均匀,耐腐蚀效果不能令人满意,而且钝化层也易泛彩。
发明内容
本发明的目的在于提供一种电镀锌钛盐蓝白钝化液,该钝化液采用了钛盐中加入适量的有机酸和有机酸盐的技术,弥补了无机盐钝化液形成的钝化膜薄和不均匀的缺陷,而且控制了钝化液中氯化物的含量,克服了蓝白钝化层泛彩的问题。所述钝化液的组分及含量为:三氯化钛6~8mL/L、双氧水4~6mL/L、硝酸钠13~17g/L、硫酸锌3~6g/L、葡萄糖酸钠3~7g/L、氟硅酸钠0.2~0.5g/L、氟化钠0.2~0.6g/L、硫酸铜1~3g/L、十二烷基硫酸钠2~5g/L、氨基三亚甲基膦酸5~8mL/L、去离子水,pH值为1.5~2.0。
本发明所述钝化液可以用于钢铁件镀锌后处理工艺,钝化后可以得到蓝白分布均匀耐蚀性较好的钝化膜。
本发明的另一目的在于提供所述电镀锌钛盐蓝白钝化液的制备方法,具体包括以下步骤:将三氯化钛、硝酸钠、硫酸锌、葡萄糖酸钠、氟硅酸钠、氟化钠、硫酸铜、十二烷基硫酸钠、氨基三亚甲基膦酸、双氧水依次加入到去离子水中混合均匀,加去离子水定容到所需体积,采用硝酸调节pH值为1.5~2.0即得到电镀锌钛盐蓝白钝化液。
本发明涉及的镀锌和钝化工艺为常规工艺,具体包括以下步骤:制备电镀锌钢板(40mm*50mm*1.0mm)→除油(成分NaOH、表面活性剂、OP乳化剂)→除锈(20% HCl)→活化(1%HCl,室温,10s)→电镀(20min)→出光(3% HNO3,室温,5s)→钝化(常温,钝化时间为30s)→干燥,每两道工序间需用水冲洗。
本发明所述三氯化钛、双氧水、硝酸钠、硫酸锌、葡萄糖酸钠、氟硅酸钠、氟化钠、硫酸铜、十二烷基硫酸钠、氨基三亚甲基膦酸均为市售分析纯化学试剂;本发明所涉及各个工艺过程中所使用的水均为去离子水。
本发明的有益效果:
(1)本发明所述钝化液不含铬等有毒有害物质,克服了铬酸盐钝化技术毒性大、不环保等缺点,是一种环保型的钝化液;该钝化液性能稳定、生产成本较低、使用过程简单。
(2)本发明环保型蓝白钝化液可以用于钢铁件镀锌后处理工艺,使用本钝化液进行处理后的锌镀层钝化膜为蓝白色,成膜均匀耐腐蚀性能优良,钝化效率高。
(3)使用本钝化液进行处理得到的钝化膜,耐蚀性高、膜层附着力强、膜层厚度均匀,经中性盐雾试验出现白锈时间超过96小时。
综上所述,相对现有的技术,本发明有效的提高了成膜的耐腐蚀性能,并控制了钝化层表面泛彩,获得了色泽光亮、耐腐蚀性能优良的蓝色钝化膜。
具体实施方式
下面结合具体实施方式对本发明做进一步说明,但本发明的范围不仅限于所述的内容。
实施例1
一种电镀锌钛盐蓝白钝化液,所述钝化液的组分及含量为:8mL/L三氯化钛、6mL/L双氧水、17g/L硝酸钠、6g/L硫酸锌、7g/L葡萄糖酸钠、0.5g/L氟硅酸钠、0.6g/L氟化钠、3g/L硫酸铜、5g/L十二烷基硫酸钠、8mL/L氨基三亚甲基膦酸、去离子水,pH为1.5。
本实施例所述的电镀锌钛盐蓝白钝化液的制备方法:
(1)在烧杯中加入体积为配置所需钝化液体积70% 的去离子水。
(2)在步骤(1)得到的去离子水中分别加入需要量的三氯化钛、硝酸钠、硫酸锌、葡萄糖酸钠、氟硅酸钠、氟化钠、硫酸铜、十二烷基硫酸钠、氨基三亚甲基膦酸,搅拌均匀至完全溶解后得到混合溶液。
(3)在步聚(2)得到的溶液中加入需要量的双氧水,然后搅拌至均匀混合。
(4)在步聚(3)得到的溶液中,加入硝酸调节pH值至1.5;然后补充水至所需体积,即得到钛盐蓝白钝化液。
本发明制备的钝化液用于钝化电镀钢板,具体步骤如下:
(1) 将40mm*50mm*1.0mm的低碳钢板在进行电镀之前按常规进行除锈、除油、活化等前处理后,放入常规电镀液中进行电镀处理,镀锌处理工艺的镀液组成及操作条件为:ZnCl270 g/L、KCl 175 g/L、硼酸30 g/L、光亮剂0.5mL/L、柔软剂17 m1/L、镀液的PH值为5.4,电流密度为1.5 A/ dm2,温度为室温,电镀时间为20min,得电镀锌钢板,备用。
(2) 配制出光液:将化学纯的HNO3与水配制成浓度为3%的出光液,备用。
(3)将步骤(1)得到的电镀锌钢板用自来水清洗干净后浸入步骤(2)中得到的出光液中,室温下停留5秒,取出后用自来水清洗干净,再浸入钝化液中,室温下浸泡30秒后,取出经自来水清洗干净后用吹风机吹干。
经钝化液处理后的钢板为蓝白色,色彩光亮、颜色均匀、成膜均匀,膜层耐腐蚀性能好,经中性盐雾试验出现白锈的时间超过96小时。
实施例2
一种电镀锌钛盐蓝白钝化液,所述钝化液的组分和含量为:6mL/L三氯化钛、4mL/L双氧水、13g/L硝酸钠、3g/L硫酸锌、3g/L葡萄糖酸钠、0.2g/L氟硅酸钠、0.2g/L氟化钠、1g/L硫酸铜、2g/L十二烷基硫酸钠、5mL/L氨基三亚甲基膦酸、去离子水,pH为2.0。
本实施例所述的电镀锌钛盐蓝白钝化液的制备方法:
(1)在烧杯中加入体积为配置所需钝化液体积50% 的去离子水。
(2)在步骤(1)得到的去离子水中分别加入需要量的三氯化钛、硝酸钠、硫酸锌、葡萄糖酸钠、氟硅酸钠、氟化钠、硫酸铜、十二烷基硫酸钠、氨基三亚甲基膦酸,搅拌均匀至完全溶解后得到混合溶液。
(3)在步聚(2)得到的溶液中加入需要量的双氧水,然后搅拌至均匀混合。
(4)在步聚(3)得到的溶液中,加入硝酸调节pH值至2.0;然后补充去离子水至所需体积,即得到钛盐蓝白钝化液。
本发明制备的钝化液用于钝化电镀钢板,方法与实施例1相同。
经钝化液处理后的钢板为蓝白色,色彩光亮、颜色均匀、成膜均匀,膜层耐腐蚀性能好,经中性盐雾试验出现白锈的时间超过96小时。
实施例3
一种电镀锌钛盐蓝白钝化液,所述钝化液的组分及含量为:7mL/L三氯化钛、5mL/L双氧水、15g/L硝酸钠、5g/L硫酸锌、5g/L葡萄糖酸钠、0.4g/L氟硅酸钠、0.4g/L氟化钠、2g/L硫酸铜、4g/L十二烷基硫酸钠、7mL/L氨基三亚甲基膦酸、去离子水,pH为1.7。
本实施例所述的电镀锌钛盐蓝白钝化液的制备方法:
(1)在烧杯中加入体积为配置所需钝化液体积60% 的去离子水。
(2)在步骤(1)得到的去离子水中分别加入需要量的三氯化钛、硝酸钠、硫酸锌、葡萄糖酸钠、氟硅酸钠、氟化钠、硫酸铜、十二烷基硫酸钠、氨基三亚甲基膦酸,搅拌均匀至完全溶解后得到混合溶液。
(3)在步聚(2)得到的溶液中加入需要量的双氧水,然后搅拌至均匀混合。
(4)在步聚(3)得到的溶液中,加入硝酸调节pH值至1.7;然后补充去离子水至所需体积,即得到钛盐蓝白钝化液。
本发明制备的钝化液用于钝化电镀钢板,方法与实施例1相同。
经钝化液处理后的钢板为蓝白色,色彩光亮、颜色均匀、成膜均匀,膜层耐腐蚀性能好,经中性盐雾试验出现白锈的时间超过96小时。
Claims (2)
1.一种电镀锌钛盐蓝白钝化液,其特征在于:所述钝化液的组分及含量为:三氯化钛6~8mL/L、双氧水4~6mL/L、硝酸钠13~17g/L、硫酸锌3~6g/L、葡萄糖酸钠3~7g/L、氟硅酸钠0.2~0.5g/L、氟化钠0.2~0.6g/L、硫酸铜1~3g/L、十二烷基硫酸钠2~5g/L、氨基三亚甲基膦酸5~8mL/L、去离子水,pH值为1.5~2.0。
2.权利要求1所述电镀锌钛盐蓝白钝化液的制备方法,其特征在于:将三氯化钛、硝酸钠、硫酸锌、葡萄糖酸钠、氟硅酸钠、氟化钠、硫酸铜、十二烷基硫酸钠、氨基三亚甲基膦酸、双氧水依次加入到去离子水中混合均匀,加去离子水定容到所需体积,然后用硝酸调节pH值为1.5~2.0即得到电镀锌钛盐蓝白钝化液。
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