JPS6332868B2 - - Google Patents
Info
- Publication number
- JPS6332868B2 JPS6332868B2 JP4663381A JP4663381A JPS6332868B2 JP S6332868 B2 JPS6332868 B2 JP S6332868B2 JP 4663381 A JP4663381 A JP 4663381A JP 4663381 A JP4663381 A JP 4663381A JP S6332868 B2 JPS6332868 B2 JP S6332868B2
- Authority
- JP
- Japan
- Prior art keywords
- metal oxide
- oxide film
- hydrochloric acid
- powder
- film
- 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.)
- Expired
Links
Landscapes
- ing And Chemical Polishing (AREA)
Description
本発明は基板に被覆された金属酸化物被膜の除
去方法に関する。
古くより、ガラスに電導性、色彩性、装飾性、
鏡面効果等を付与する目的でガラス表面に金属酸
化物被膜を被覆することが広く行なわれてきた。
このような金属酸化物被膜としては、電導性を目
的としたSn、In、Znなどの酸化物膜、色彩性、
装飾性、鏡面効果等を目的とするものとして、
Co、Sn、Cu、Fe、Cr、Ni、Mn、Al、Ｖ、Mo、
Ｗなどの酸化物膜をあげることができる。
これらの金属酸化物被膜の内、In2O3あるいは
SnO2膜の如きは真空蒸着法、あるいはスパツタ
リング法により製造され、またその他の多くの金
属酸化物被膜は高温に加熱されたガラス表面に目
的とする金属を含む有機化合物の溶液、又は蒸気
を吹付け、ガラス表面で該有機化合物を熱分解す
る熱分解法により製造されている。
このように基板表面に被覆された金属酸化物被
膜はその使用目的によつて該被膜の一部を除去し
て使用される。
従来、In2O3又はSnO2よりなる被膜の除去方法
として該被膜の一部分にZn微粉末を付着させ、
しかる後に酸で処理することが行われていた。し
かしながら、従来の被膜の除去方法は特にSnO2
被膜や、Co、Cu、Fe、Crなどの酸化物被膜を完
全に除去することが困難であつた。
本発明は前記した従来法の欠点を解決するため
になされたものであつて、基板に強固に付着した
金属酸化物被膜を完全に除去する方法を提供す
る。
すなわち、本発明はFe、Cr、Co、Cu、Ni、
Mn、Zn、In、Sn、Al、Ｖ、Mo、及びＷの酸化
物より選ばれた１種又は２種以上の基板に付着し
た金属酸化物被膜の一部分にCrの粉末を付着さ
せ、しかる後に塩酸を含む溶液に接触せしめるこ
とにより、該基板から該Crの粉末を付着した金
属酸化物被膜を除去する方法である。
本発明において、金属酸化物被膜を除去するに
要する時間は処理溶液中の塩酸濃度と処理温度に
左右され、処理溶液は塩酸の含有量が４重量％以
上であることが好ましく、また処理温度は高温で
あるほど被膜を除去するに要する時間が短くな
る。
また本発明は基板から金属酸化物被膜の除去を
望まない部分に塩酸に安定な保護膜、例えばセロ
ハンテープ等を該部分に付着せしめ、しかる後に
塩酸溶液による処理を実施することにより、基板
上に残された金属酸化物被膜に塩酸処理の悪影響
を及ぼすことなく実施できる。
本発明によれば、簡単な操作で、しかも基板に
強固に付着した金属酸化物被膜の所望個所を短時
間で除去できるので、所定形状の金属酸化物被膜
を付着した基板を容易に製造することができる。
以下、本発明の具体的な実施例について詳述す
る。
580℃に加熱した板ガラス表面に鉄アセチルア
セトテート、クロムアセチルアセトナート、及び
コバルトアセチルアセトナートを有機溶媒に溶か
した混合溶液を吹付け、重量比でFe2O3が20％、
Cr2O3が30％、Co2O3が50％よりなる金属酸化物
被膜を付着した板ガラスを製造した。
次にこの金属酸化物被膜付着板ガラスの被膜の
一部表面に粘結性樹脂に溶いたCrの微粉末を塗
付し、その後濃度が35.5重量％の70℃の塩酸溶液
で４分間接触したところ、Crの微粉末を塗付し
た部分の金属酸化物被膜は全部板ガラスから除去
できた。
比較例として前述のCrの微粉末の代え、Zn、
Fe、Co、Cuの微粉末を用いて、同称の処理をし
たところ、いずれの場合にも板ガラスから金属酸
化物被膜を完全に除去することはできなかつた。
また処理液に98重量％の濃度の硫酸又は63重量
％の濃度の硝酸を塩酸の代わりに用いた場合には
いずれの金属微粉末を使用した場合にも板ガラス
から金属酸化物被膜を除去することができなかつ
た。
以上の被膜除去処理の結果を第１表に示した。
一方、前述の金属酸化物被膜付着板ガラスの被膜
の一部表面にCrの微粉末を塗布し、70℃の種々
の濃度の塩酸溶液で４分間処理した結果を第２表
に示す。
The present invention relates to a method for removing a metal oxide film coated on a substrate. Since ancient times, glass has been valued for its electrical conductivity, color, and decorative properties.
It has been widely used to coat glass surfaces with metal oxide films for the purpose of imparting mirror effects and the like.
Such metal oxide films include oxide films of Sn, In, Zn, etc. for electrical conductivity, color properties,
For decorative purposes, mirror effects, etc.
Co, Sn, Cu, Fe, Cr, Ni, Mn, Al, V, Mo,
An example is an oxide film such as W. Among these metal oxide films, In 2 O 3 or
SnO 2 films are produced by vacuum evaporation or sputtering, and many other metal oxide films are produced by spraying a solution or vapor of an organic compound containing the target metal onto a glass surface heated to a high temperature. It is manufactured by a thermal decomposition method in which the organic compound is thermally decomposed on the glass surface. The metal oxide film coated on the substrate surface in this manner is used by removing a portion of the film depending on the intended use. Conventionally, as a method for removing a film made of In 2 O 3 or SnO 2 , Zn fine powder is attached to a part of the film,
This was followed by treatment with acid. However, traditional coating removal methods are particularly sensitive to SnO 2
It has been difficult to completely remove coatings and oxide coatings such as Co, Cu, Fe, and Cr. The present invention has been made to solve the above-mentioned drawbacks of the conventional method, and provides a method for completely removing a metal oxide film that is firmly adhered to a substrate. That is, the present invention uses Fe, Cr, Co, Cu, Ni,
Cr powder is attached to a part of the metal oxide film attached to one or more substrates selected from oxides of Mn, Zn, In, Sn, Al, V, Mo, and W, and then This is a method of removing the metal oxide film to which the Cr powder is attached from the substrate by bringing it into contact with a solution containing hydrochloric acid. In the present invention, the time required to remove the metal oxide film depends on the concentration of hydrochloric acid in the treatment solution and the treatment temperature, and the treatment solution preferably has a hydrochloric acid content of 4% by weight or more, and the treatment temperature is The higher the temperature, the shorter the time required to remove the coating. The present invention also provides a method of attaching a protective film that is stable to hydrochloric acid, such as cellophane tape, to a portion of the substrate from which removal of the metal oxide film is not desired, and then treating the portion with a hydrochloric acid solution. Hydrochloric acid treatment can be carried out without any adverse effects on the remaining metal oxide film. According to the present invention, a desired portion of a metal oxide film firmly adhered to a substrate can be removed in a short time with a simple operation, so that a substrate with a metal oxide film of a predetermined shape attached can be easily manufactured. Can be done. Hereinafter, specific examples of the present invention will be described in detail. A mixed solution of iron acetylacetate, chromium acetylacetonate, and cobalt acetylacetonate dissolved in an organic solvent was sprayed onto the surface of a plate glass heated to 580°C, and Fe 2 O 3 was 20% by weight.
A plate glass was produced to which a metal oxide coating consisting of 30% Cr 2 O 3 and 50% Co 2 O 3 was deposited. Next, fine powder of Cr dissolved in caking resin was applied to a part of the surface of the glass plate coated with the metal oxide coating, and then contacted with a hydrochloric acid solution at 70°C with a concentration of 35.5% by weight for 4 minutes. The entire metal oxide film on the area where the fine Cr powder was applied could be removed from the glass plate. As a comparative example, instead of the above-mentioned Cr fine powder, Zn,
When the same process was performed using fine powders of Fe, Co, and Cu, the metal oxide film could not be completely removed from the glass plate in any case. In addition, if sulfuric acid with a concentration of 98% by weight or nitric acid with a concentration of 63% by weight is used in the treatment solution instead of hydrochloric acid, metal oxide coatings can be removed from sheet glass regardless of whether fine metal powder is used. I couldn't do it. The results of the above film removal treatment are shown in Table 1.
On the other hand, fine Cr powder was applied to a part of the surface of the metal oxide coated plate glass described above and treated with hydrochloric acid solutions of various concentrations at 70° C. for 4 minutes. Table 2 shows the results.
【表】【table】
【表】
第２表から、塩酸濃度が４重量％以上のもので
あれば、金属酸化物被膜の除去に実用的であるこ
とが理解できる。
また、塩酸濃度が35.5重量％の溶液の場合には
処理温度が室温であつても４分間の処理で前記被
膜を完全に除去できた。[Table] From Table 2, it can be seen that if the hydrochloric acid concentration is 4% by weight or more, it is practical for removing metal oxide coatings. Furthermore, in the case of a solution with a hydrochloric acid concentration of 35.5% by weight, the film could be completely removed in a 4-minute treatment even when the treatment temperature was room temperature.
Claims (1)
Al、Ｖ、Mo、及びＷの酸化物より選ばれた１種
又は２種以上の基板に付着した金属酸化物被膜の
一部分にCrの粉末を付着させ、しかる後に塩酸
を含む溶液に接触せしめることにより、該基板か
ら該Crの粉末を付着した金属酸化物被膜を除去
する方法。1 Fe, Cr, Co, Cu, Ni, Mn, Zn, In, Sn,
Applying Cr powder to a part of the metal oxide film adhered to one or more substrates selected from oxides of Al, V, Mo, and W, and then contacting with a solution containing hydrochloric acid. A method of removing a metal oxide film to which the Cr powder is attached from the substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4663381A JPS57161066A (en) | 1981-03-30 | 1981-03-30 | Removing method for metallic oxide film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4663381A JPS57161066A (en) | 1981-03-30 | 1981-03-30 | Removing method for metallic oxide film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57161066A JPS57161066A (en) | 1982-10-04 |
| JPS6332868B2 true JPS6332868B2 (en) | 1988-07-01 |
Family
ID=12752692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4663381A Granted JPS57161066A (en) | 1981-03-30 | 1981-03-30 | Removing method for metallic oxide film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57161066A (en) |
-
1981
- 1981-03-30 JP JP4663381A patent/JPS57161066A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57161066A (en) | 1982-10-04 |
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