JPS6148575A - Passivation for lead and lead-containing surface - Google Patents

Passivation for lead and lead-containing surface

Info

Publication number
JPS6148575A
JPS6148575A JP60175628A JP17562885A JPS6148575A JP S6148575 A JPS6148575 A JP S6148575A JP 60175628 A JP60175628 A JP 60175628A JP 17562885 A JP17562885 A JP 17562885A JP S6148575 A JPS6148575 A JP S6148575A
Authority
JP
Japan
Prior art keywords
lead
chromium
iii
solution
ions
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP60175628A
Other languages
Japanese (ja)
Inventor
ハインツ・ポルツ
ラインハルト・オピツツ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gerhard Collardin GmbH
Original Assignee
Gerhard Collardin GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gerhard Collardin GmbH filed Critical Gerhard Collardin GmbH
Publication of JPS6148575A publication Critical patent/JPS6148575A/en
Pending legal-status Critical Current

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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
    • C23C22/48—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 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
    • C23C22/58—Treatment of other metallic material
    • 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
    • C23C22/07—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 phosphates
    • C23C22/08—Orthophosphates
    • 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
    • C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
    • C23C2222/10—Use of solutions containing trivalent chromium but free of hexavalent chromium

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 「産業上の利用分野］ 本発明は、鉛および鉛含有表面を不動態化する方法に関
する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for passivating lead and lead-containing surfaces.

［従来技術］ 多くの有用な特定性質、例えば、耐腐食性、加工容易性
、熱ストレス変化に対する耐性、好ましい遮音性および
高度な耐薬品性の故に、鉛および鉛含有合金については
広範囲の用途か見い出たされている３、４なわし、船倉
ぞＪ”物質は、建築構造物において、化学装置の製造に
おいて、照射に対４−ろ保護において、自動車産業にお
いておよび他の分野において増々多く用いられろように
なっている。PRIOR ART Lead and lead-containing alloys have found widespread application because of a number of useful specific properties, such as corrosion resistance, ease of processing, resistance to changes in thermal stress, favorable sound insulation, and high chemical resistance. 3 and 4 materials are being found increasingly in the construction of buildings, in the manufacture of chemical equipment, in protection against irradiation, in the automobile industry and in other fields. It is ready to be used.

これら種々の用途に用いられろ１つの理由は、鉛および
鉛含有表面か、空中において種々の組成の酸化鉛、アル
カリ性炭酸鉛、硫酸鉛または硫化鉛の安定な被覆を形成
して自己不動態化するので、腐食に対して別個に保護す
る必要かないからである。従来、鉛才気ｊこび鉛含有表
面は、適切な防食を行う不動態化表面を生ヒさせ、例え
ばラッカーなどの他の被覆組成物用途のため適切なヘー
スを与えるアルカリ洗浄に中にイτｊされていた。One reason for their use in these various applications is that lead and lead-containing surfaces self-passivate by forming stable coatings of lead oxide, alkaline lead carbonate, lead sulfate, or lead sulfide of various compositions in air. Therefore, there is no need for separate protection against corrosion. Traditionally, lead-containing surfaces have been subjected to an alkaline wash which gives a passivated surface that provides adequate corrosion protection and provides a suitable haze for other coating composition applications such as lacquers. was.

しかし、鉛およびある鉛化合物はかなり高い毒性を有ず
ろので、鉛および鉛含有表面の腐食に対する保護の改良
か必要になる。結果として、鉛または鉛含有合金の表面
を持つ加工物の製造業者は、腐食に対する製品保護に関
して、厳しい要求を受１．１でいろ。However, lead and some lead compounds can be highly toxic, necessitating improved protection of lead and lead-containing surfaces against corrosion. As a result, manufacturers of workpieces with lead or lead-containing alloy surfaces are subject to stringent demands regarding product protection against corrosion.

鉛および鉛含有表面の不動態化のノこめの新しい技術に
より必要になる防食での黄求かｊ′−り厳しくなるに従
って、鉛および鉛含有表面へのラッカーの１７１着に関
して製造者に対する要求は更に厳しいものとなる。多く
の場合、空中ての鉛表面の自己不動態化時に形成ずろ」
二記塩は、次いて適用される被覆材料を充分に耐え得る
ように何着させるためには適切でない。As the requirements for corrosion protection become more stringent as a result of new techniques for passivation of lead and lead-containing surfaces, demands on manufacturers regarding the application of lacquers to lead and lead-containing surfaces are increasing. It will become even more difficult. Often formed during self-passivation of lead surfaces in air.
The secondary salts are not suitable for providing sufficient resistance to the subsequent application of coating materials.

［発明の１」的］ 本発明の目的は、有効な防食を達成するだけてなく、ラ
ッカーおよび他の被覆材ｔ」を後に適用するために適し
た表面をも形成する鉛および鉛含有表面の不動態化方法
を提供することにある。OBJECT OF THE INVENTION It is an object of the present invention to prepare lead and lead-containing surfaces which not only achieve effective corrosion protection but also form a surface suitable for the subsequent application of lacquers and other coatings. The object of the present invention is to provide a passivation method.

「発明の構成］ 本発明は、鉛および鉛含有表面を、要すれば脱脂の後に
、００１〜１０ｇ／ａの量のクロム（■１）イオン含Ｙ
丁酸性水溶液に接触さ且ることを特徴とする鉛および鉛
含有表面の不動態化方法に関す乙。"Structure of the Invention" The present invention provides a method for treating lead and lead-containing surfaces, if necessary after degreasing, with chromium (■1) ion-containing Y in an amount of 0.001 to 10 g/a.
Part 2 relates to a method for passivating lead and lead-containing surfaces, which is characterized by contacting with a chloric acid aqueous solution.

本発明において、鉛表面は、鉛のみならず電解的方法ま
たは他の方法で製造された金属鉛表面で被覆された他の
金属から全体的になる加工物表面を意味する。鉛含有表
面とは、２成分またはそれ以」−の船倉を合金、あるい
は２成分またはそれ以上の船倉佇合金の多少薄い表面で
被覆された他の金属から全体的になる加工物表面を意味
する。In the present invention, a lead surface means a workpiece surface consisting entirely of lead as well as other metals coated with a metallic lead surface produced by electrolytic or other methods. Lead-containing surface means a workpiece surface consisting entirely of a binary or more-component hold alloy, or another metal coated with a more or less thin surface of a binary or more-component hold alloy. .

使用溶液中に０．０１〜ｌ０ｆｌ／Ｑおよび好ましくは
００２〜５９／ρの量てクロム（ＩＩＩ）イオンを含有
する水溶液を、本発明の方法において用いる。Aqueous solutions containing chromium(III) ions in the working solution in an amount of 0.01 to 10 fl/Q and preferably 002 to 59/ρ are used in the process of the invention.

使用水溶液の０４〜３９／Ｑの量でクロム（ＩＩＩ）イ
オンを含有する溶液が実用において特に効果的である。Solutions containing chromium(III) ions in amounts of 04 to 39/Q of the aqueous solution used are particularly effective in practice.

クロム（ＩＩＩ）イオンは、本方法を実施ずろ温度範囲
において容易に水に溶解する塩の形態で上記量で使用溶
液に導入する。このため、弱有機酸の塩か特に適してい
る。その例には、メタノエート（ホルメート）、エタノ
エート（アセテート）、プロパノエート（プロピオネー
ト）、ブタノエート（ブヂレート）または２．４−ペン
タンジオネート（アセデルアセトネート）が包含される
。クロム（ＩＩＩ）エタノエート（」、アニオンか使用
溶液において緩衝剤として働き、更に不動態化溶液によ
る珂境的損′　害を防止するにうに充分な安定性を示す
クロム（■）カチオンと錯体を形成ずろので、特に好ま
しい。The chromium(III) ions are introduced into the use solution in the above amounts in the form of salts that are readily soluble in water in the temperature range in which the process is carried out. For this reason, salts of weak organic acids are particularly suitable. Examples include methanoate (formate), ethanoate (acetate), propanoate (propionate), butanoate (butyrate) or 2,4-pentanedionate (acedelacetonate). Chromium (III) ethanoate, an anion that forms a complex with a chromium (■) cation that is sufficiently stable to act as a buffer in the working solution and also to prevent environmental damage from passivating solutions. It is especially preferable because it is transparent.

本発明の処理溶液を調製するため、クロム（ＩＩＩ）エ
タノエートは純品として用いてよいか、これは、価格の
点から有益とは考えられない。その水溶液か一般に３〜
５のｐＨ値を持つ市販クロム（ＩＩＩ）エタノエートを
工業的に用いることかできる。To prepare the processing solutions of the present invention, chromium (III) ethanoate may be used in pure form, but this is not considered advantageous from a cost standpoint. The aqueous solution is generally 3~
Commercially available chromium(III) ethanoate with a pH value of 5 can be used industrially.

本発明において、クロム（ＩＩＩ）イオン含有使用水溶
液（Ｊｌ　２〜６、好ましくは３２〜４２のｐｔＩ値を
有する。このｐＨ値は市販クロム（ＩＩＩ）を水に溶解
することによって直接に達成される。ｐＨ値は、水にク
ロム（ＩＩＩ）塩を溶解した後に２〜６の範囲にないな
らば、リン酸または酢酸を加えることによって必要な値
に調節する。In the present invention, the aqueous solution used containing chromium(III) ions (Jl has a ptI value of 2 to 6, preferably 32 to 42. This pH value is achieved directly by dissolving commercially available chromium(III) in water. The pH value is adjusted to the required value by adding phosphoric acid or acetic acid if it is not in the range 2-6 after dissolving the chromium(III) salt in water.

本発明によれば、鉛および鉛含有表面を不動態化するた
め、要すればホスフェートを溶液に加えてよい。これは
、使用溶液中のボスフェート含量が使用溶液において０
００１〜１０ｇ／ρ、および好ましくは０．０１〜５ｇ
／ｌになるような量で使用前に溶液にリン酸を加えろこ
とによって行うことが有益である。According to the invention, phosphate may optionally be added to the solution to passivate lead and lead-containing surfaces. This means that the bosphate content in the working solution is 0.
001-10g/ρ, and preferably 0.01-5g
This is advantageously done by adding phosphoric acid to the solution before use in such an amount that the amount of phosphoric acid is 1/l.

クロＪ＼（ＩＩＩ）イオノ含自゛酸性水溶液を用いて鉛
および船倉量表面を不動態化ずろ本発明の方法は、２０
〜５０°Ｃの温度で、好ましくは２５〜４０℃の温度で
実施する。１分間程度の処理時間（」、これら温度にお
いてさえ、鉛および鉛含有表面の優れた不動態化をふ成
上るために充分である。The method of the present invention uses an acidic aqueous solution containing ChloroJ\(III) ion to passivate lead and cargo surfaces.
It is carried out at a temperature of ~50°C, preferably between 25 and 40°C. Treatment times of the order of 1 minute are sufficient to produce excellent passivation of lead and lead-containing surfaces even at these temperatures.

実際、本発明の方法は、５５〜６５°Ｃて６０〜１８０
秒間アルカリ水溶液に上り噴霧洗浄した鉛または鉛含有
表面を２０〜４０℃の温度でクロム（ＩＵ）イオン含有
酸性溶液により処理することによって行う。これらのよ
うな水溶液は、既知の方法で水に適量のクロノ−３（ｍ
）イオン含有固形状または液状濃縮物を溶解することに
よって得られる。不動態化のため、鉛または鉛含有表面
は、噴霧被覆、！　　　　　　　　　　　浸漬被覆ある
いは噴霧浸漬被覆または流延被覆なとの当業者に既知の
他の被覆技術によって処理してよい。処理時間は一般に
１分間である。この上うに不動態化された鉛または鉛含
有表面は、完全に脱イオンした水で洗浄し、次いて圧縮
空気で乾燥ずろ。その後、均一な不動聾化層か表面−１
−に形成する。In fact, the method of the present invention requires 60-180°C at 55-65°C.
This is carried out by treating lead or lead-containing surfaces, which have been spray-cleaned in an alkaline aqueous solution for a second, with an acidic solution containing chromium (IU) ions at a temperature of 20 to 40°C. Aqueous solutions such as these can be prepared by adding an appropriate amount of Chrono-3 (m2) to water by a known method.
) Obtained by dissolving ion-containing solid or liquid concentrates. For passivation, lead or lead-containing surfaces are spray coated,! It may be processed by other coating techniques known to those skilled in the art such as dip coating or spray coating or cast coating. Processing time is generally 1 minute. Additionally, passivated lead or lead-containing surfaces should be rinsed with fully deionized water and then dried with compressed air. Then, a uniform immobile deafening layer or surface-1
− to form.

本発明の方法によって不動態化した鉛また（Ｊ鉛含有表
面は、次いてペイントおよびラッカーなとて被覆ずろの
に顕著に優れている。特に、このように不動態化した鉛
表面は、ポリウレタンラッカーのため理想的な基材を形
成するか、他の後処理方法のために６適している。Lead-containing surfaces passivated by the method of the invention are then markedly superior for coating with paints and lacquers. 6. Suitable for forming an ideal substrate for lacquers or for other post-treatment methods.

「実施例］ 以Ｆに実施例を示し、本発明を更に詳しく説明する。"Example] EXAMPLES The present invention will be explained in more detail with reference to Examples below.

実施例Ｉ 市販クロム（Ｉｎ　）：Ｌタノエ−トＩ　５１／（Ｃｒ
”″３９／Ｑに相当）を含む溶液を調製した。溶液のｐ
Ｈ値は約３５であった。Example I Commercially available chromium (In): Lthanoate I 51/(Cr
A solution containing "39/Q" was prepared. p of solution
The H value was approximately 35.

アルカリ洗浄溶液により５０°Ｃで６０秒間予め洗浄し
た鉛被覆鋼シートに、」二記溶液を３０℃で６０秒間噴
霧した。次いで、シートを、水および完全に脱イオンし
た水て洗ＫＰＬ、圧縮空気を吹き（」ｔ−ｊろことによ
って乾燥した。The solution was sprayed at 30° C. for 60 seconds onto a lead-coated steel sheet that had been previously cleaned with an alkaline cleaning solution at 50° C. for 60 seconds. The sheet was then dried by washing with water and fully deionized KPL and blowing with compressed air.

次いてノートをビンケルマン（Ｗ　ｉｎｋｃｌｍａｎｎ
）ポリウレタンラッカーで被覆した。Next, I wrote down my notebook to Winkelmann (W inkclmann).
) coated with polyurethane lacquer.

次いてシートからＤＩＮ５３　１６７に従ってノンクル
ノノソ）・を得、ＤＩＮ５０　０２１に従って２４０時
間で塩水噴霧試験を行った。ＤＩＮ５３１６７による評
価によれば、３ｍ…未Ｉ偽のクリープ値か得られた。The sheets were then obtained according to DIN 53 167 and subjected to a salt spray test for 240 hours according to DIN 50 021. According to the evaluation according to DIN 53167, a false creep value of 3 m... was obtained.

ＤＩＮ５３　２０９による評価によれば、ブリスタ一度
は、ｍ　Ｏ／　Ｗ　Ｏの値ごあった。According to the evaluation according to DIN 53 209, the blister once had a value of m O/W O.

実施例２ 市販クロム（ＩＩＩ）エタノエート２＆／（！（Ｃｒ”
０４；ｔ／Ｑに相当）おヨヒｌＪン酸０　、１　ｇ／Ｒ
（１）　０４３０１「／ρに相当）を含む溶液を調製し
た。溶液のｐ　ｉ（値は約３９であった。Example 2 Commercially available chromium(III) ethanoate 2&/(!(Cr”
04; equivalent to t/Q) Oyohynic acid 0,1 g/R
(1) A solution containing 04301 "/ρ" was prepared. The p i (value of the solution was approximately 39).

アルカリ洗浄溶液により５５°Ｃて６０秒間予め洗浄し
た船被覆鋼ノートに、上記溶液を４０°Ｃで６０秒間噴
霧した。次いで、ソートを、水および完全に脱イオンし
た水で洗浄し、圧縮空気を吹き付（Ｊろことによって乾
燥した。The above solution was sprayed at 40°C for 60 seconds on a ship-coated steel notebook that had been previously cleaned with an alkaline cleaning solution for 60 seconds at 55°C. The sort was then washed with water and fully deionized water and dried by blowing with compressed air (J filter).

次いてノートをビンケルマン（Ｗ　ｉｎｋｃｌｍａｎｎ
）ポリウレタンラッカーで被覆した。Next, I wrote down my notebook to Winkelmann (W inkclmann).
) coated with polyurethane lacquer.

次いてノートからＤＩＮ５３　１６７に従ってンングル
カソトを得、１）ＩＮ５００２＋に従って２４０時間で
塩水噴霧試験を行った。ｌ’）　Ｉ　Ｎ　５３１６７に
よる評価によれは、３ｍｍ未／ｌ！ｌ’ｉのクリープ値
か得られた。Nungurukasoto was then obtained from the notebook according to DIN 53 167 and 1) a salt spray test was carried out according to IN 5002+ at 240 hours. l') According to the evaluation by I N 53167, the deviation is less than 3 mm/l! The creep value of l'i was obtained.

ＤＩＮ５３　２０９による評価によイ１は、ブリスタ一
度（」、ｍＯ／７０の値であった。Evaluation according to DIN 53 209 gave a value of mO/70.

実施例３ 市販クロム（ＩＩＩ）エタノエート４９／ρ（Ｃｒ３＋
０８９／ρに相当）およびリン酸０．３ｇ１０．（１）
０４’　０３９１０に相当）を含む溶液を調製した。溶
液のｐ　Ｉ−ｉ値は３５てあ−）た。Example 3 Commercially available chromium (III) ethanoate 49/ρ (Cr3+
089/ρ) and 0.3 g of phosphoric acid10. (1)
04' corresponding to 03910) was prepared. The pI-i value of the solution was 35.

アルカリ洗浄溶液中に６５℃で３分間浸漬することによ
って予め洗浄した鉛被覆工業用燃料タンクを、上記溶液
に２２℃で２分間浸漬した。次いて、タンクを、水およ
び完全に脱イオンした水で洗浄し、圧縮空気を吹き付け
ることによって乾燥しノこ。A lead-coated industrial fuel tank, previously cleaned by immersion in an alkaline cleaning solution for 3 minutes at 65°C, was immersed in the above solution for 2 minutes at 22°C. The tank is then rinsed with water and fully deionized water and dried by blowing with compressed air.

次いでタンクをヒンケルマン（Ｗ　ｉｎｋｅｌｍａｎｎ
）ポリウレタンラッカーで被覆した。The tank was then fitted with a Hinkelmann
) coated with polyurethane lacquer.

欠いてタンクからＤＩＮ５３　１６７に従ってノングル
カットを得、１）ＩＮ５００２＋に従って２４０時間で
塩水噴霧試験を行った。ＤＩＮ５３１６７による評価に
よれば、３ｍｍ未７ｉ！〜のクリープ値が得られた。A non-glue cut was obtained from the tank according to DIN 53 167 and 1) a salt spray test was carried out at 240 hours according to IN 5002+. According to the evaluation according to DIN53167, 3mm less than 7i! A creep value of ~ was obtained.

１）ｌＮ５３２０９による評価によれは、ブリスタ一度
は、ｍＯ／９０の値であった。1) According to the evaluation using IN53209, the value of the blister was mO/90.

比較例Ｉ アルカリ洗浄溶液を５５℃で６０秒間噴霧することによ
って鉛被覆鋼ノー１〜を洗浄した。次いて、ノートを、
水および完全に脱イオンした水で洗浄し、圧縮空気を吹
きイ」（ツることによって乾燥した。Comparative Example I Lead-coated steel No. 1 was cleaned by spraying an alkaline cleaning solution at 55° C. for 60 seconds. Next, the notes
Wash with water and fully deionized water and dry by blowing with compressed air.

次いでノートをヒンケルマン（Ｗ　ｉｎｋｅｌｍａｎｎ
）ポリウレタンラッカーで被覆した。Next, the notebook was written by Winkelmann (Winkelmann).
) coated with polyurethane lacquer.

咋　　　　　　　　　　　　　　次いでノートからＤＩ
Ｎ５３　１６７に従ってノングルカットを得、ＤＩＮ５
００２１に従って２４０時間で塩水噴霧試験を行った。Kui Then DI from the notebook
Obtain non-glue cuts according to N53 167, DIN5
A salt spray test was conducted in accordance with 0021 for 240 hours.

ＤＩＮ５３＋６７によるａ−＋′＋曲によれば、２０ｍ
ｍ以１−８のクリープ値か得られた。According to the a-+′+ song according to DIN53+67, 20 m
Creep values of 1-8 were obtained.

ＤＩＮ５３　２０９による評価によれ（Ｊ、ブリスタ一
度は、ｍ５／９５の値てあ−った。・本比較例（Ｊ、本
発明の方法によって防食において著しい改良が得られろ
ことを示している。According to the evaluation according to DIN 53 209 (J), the blister resistance had a value of m5/95. This comparative example (J) shows that a significant improvement in corrosion protection can be obtained by the method of the invention.

特許出願人　ケルハルト・コラルディン・ゲゼルノヤフ
ト・ミツト・Patent applicant Kerhard Koraldin Geselnojaft Mituto

Claims (1)

【特許請求の範囲】 １、鉛および鉛含有表面を、要すれば脱脂の後に、０．
０１〜１０ｇ／ｌの量のクロム（III）イオン含有酸性
水溶液に接触させることを特徴とする鉛および鉛含有表
面の不動態化方法。 ２、クロム（III）イオン含量は使用溶液の０．０２〜
５ｇ／ｌに調節する特許請求の範囲第１項記載の方法。 ３、クロム（III）イオンは、弱有機カルボン酸の水溶
性クロム（III）塩の形態で、好ましくはクロム（III）
エタノエートの形態で使用溶液に導入される特許請求の
範囲第１項または第２項に記載の方法。 ４、処理溶液のｐＨ値は２〜６、好ましくは３２〜４２
に調節する特許請求の範囲第１〜３項のいずれかに記載
の方法。 ５、鉛または鉛含有表面は、クロム（III）イオンおよ
び更に０．００１〜１０ｇ／ｌ、好ましくは００１〜５
ｇ／ｌのＰＯ＿４＾３＾−イオンを含有する溶液に接触
させる特許請求の範囲第１〜４項のいずれかに記載の方
法。 ６、鉛および鉛含有表面を ａ）アルカリ洗浄溶液で洗浄し、 ｂ）２０〜４０℃において０．０１〜１０ｇ／ｌの量の
クロム（ｍ）含有酸性水溶液で噴霧または浸漬すること
によって処理し、次いで ｃ）水および完全な脱イオン水もしくは低塩水で洗浄す
る 特許請求の範囲第１〜５項のいずれかに記載の方法。[Claims] 1. Lead and lead-containing surfaces, optionally after degreasing, are treated with 0.
A method for passivating lead and lead-containing surfaces, characterized in that they are brought into contact with an acidic aqueous solution containing chromium(III) ions in an amount of 0.01 to 10 g/l. 2.The chromium (III) ion content of the solution used is 0.02~
The method according to claim 1, wherein the amount is adjusted to 5 g/l. 3. Chromium (III) ions are in the form of water-soluble chromium (III) salts of weak organic carboxylic acids, preferably chromium (III)
3. A process according to claim 1, which is introduced into the use solution in the form of ethanolate. 4. The pH value of the treatment solution is 2-6, preferably 32-42
4. A method according to any one of claims 1 to 3 for adjusting the temperature. 5. Lead or lead-containing surfaces contain chromium (III) ions and further 0.001-10 g/l, preferably 0.001-5
5. A method according to any one of claims 1 to 4, wherein the method is brought into contact with a solution containing g/l of PO_4^3^- ions. 6. Lead and lead-containing surfaces are treated by a) cleaning with an alkaline cleaning solution and b) spraying or dipping with an acidic aqueous solution containing chromium (m) in an amount of 0.01 to 10 g/l at 20 to 40 °C. , and then c) washing with water and fully deionized or low salt water.
JP60175628A 1984-08-10 1985-08-08 Passivation for lead and lead-containing surface Pending JPS6148575A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843429532 DE3429532A1 (en) 1984-08-10 1984-08-10 METHOD FOR PASSIVATING LEAD AND LEAD-BASED SURFACES
DE3429532.1 1984-08-10

Publications (1)

Publication Number Publication Date
JPS6148575A true JPS6148575A (en) 1986-03-10

Family

ID=6242814

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60175628A Pending JPS6148575A (en) 1984-08-10 1985-08-08 Passivation for lead and lead-containing surface

Country Status (4)

Country Link
EP (1) EP0171043B1 (en)
JP (1) JPS6148575A (en)
CA (1) CA1261716A (en)
DE (2) DE3429532A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4135524C2 (en) * 1991-10-28 1995-01-26 Gc Galvano Consult Gmbh Method and means for chromating surfaces made of zinc or cadmium or alloys thereof
GB9409811D0 (en) * 1994-05-17 1994-07-06 Imi Yorkshire Fittings Improvements in copper alloy water fittings
US10400338B2 (en) 2017-05-12 2019-09-03 Chemeon Surface Technology, Llc pH stable trivalent chromium coating solutions

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB118182A (en) * 1917-10-04 1918-08-22 Edwin Ebenezer Burnett Depositing Chromium upon Metals, particularly Iron, Chemically.
US3592747A (en) * 1966-08-17 1971-07-13 Samuel L Cohn & Charles C Cohn Method of forming a decorative and protective coating on a surface
DE2031358C3 (en) * 1970-06-25 1981-10-15 Gerhard Collardin GmbH, 5000 Köln Process for the production of protective layers on aluminum, iron and zinc by means of acidic solutions containing complex fluorides
GB1461244A (en) * 1974-06-17 1977-01-13 Lubrizol Corp Treatment of metal surfaces with trivalent chromium solutions
JPS57500248A (en) * 1980-02-06 1982-02-12
GB2117414B (en) * 1982-03-26 1985-11-13 Usui Kokusai Sangyo Kk Ferrous substrates hot dip coated with lead alloy

Also Published As

Publication number Publication date
DE3582833D1 (en) 1991-06-20
EP0171043A2 (en) 1986-02-12
CA1261716A (en) 1989-09-26
EP0171043A3 (en) 1988-06-08
EP0171043B1 (en) 1991-05-15
DE3429532A1 (en) 1986-02-20

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