JPH0610112A - Method for strengthening inorganic coating film - Google Patents
Method for strengthening inorganic coating filmInfo
- Publication number
- JPH0610112A JPH0610112A JP17135692A JP17135692A JPH0610112A JP H0610112 A JPH0610112 A JP H0610112A JP 17135692 A JP17135692 A JP 17135692A JP 17135692 A JP17135692 A JP 17135692A JP H0610112 A JPH0610112 A JP H0610112A
- Authority
- JP
- Japan
- Prior art keywords
- coating
- coating film
- strengthening
- film
- ceramics
- 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
Links
Landscapes
- Coating By Spraying Or Casting (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、溶融メッキ浴に使用す
るロールのような耐磨耗、耐食、耐熱性機械部材や、各
種器具類に施されているセラミックス、サーメット等の
溶射皮膜を、使用に適するように改質強化する方法に関
する。BACKGROUND OF THE INVENTION The present invention relates to a wear-resistant, corrosion-resistant and heat-resistant mechanical member such as a roll used in a hot dip bath, ceramics applied to various instruments, and a thermal spray coating such as cermet. It relates to a method of modifying and strengthening it so that it is suitable for use.
【０００２】[0002]
【従来の技術】従来、溶融メッキ浴に使用するロールの
ような耐磨耗、耐食、耐熱性機械部材等の表面部分には
これら部材の特性を発揮させるためセラミックスやサー
メットの溶射による皮膜形成が行なわれ、実用に供され
てきた。これら皮膜は緻密で気孔率の小さいものがよい
とされてきたため、溶射皮膜の緻密化、低気孔率化には
各種の技術開発が行なわれてきた。2. Description of the Related Art Conventionally, a film formed by thermal spraying of ceramics or cermet has been formed on the surface portion of wear-resistant, corrosion-resistant, heat-resistant mechanical members such as rolls used for hot dipping baths in order to exert the characteristics of these members. It has been performed and put into practical use. Since it has been considered that these coatings should be dense and have a low porosity, various technical developments have been carried out for making the spray coating dense and having a low porosity.
【０００３】また表面コーティング剤として各種の無機
質コーティング剤が開発され、薄いセラミックス膜の形
成方法が提案されている。Various inorganic coating agents have been developed as surface coating agents, and methods for forming thin ceramic films have been proposed.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、セラミ
ックスの溶射皮膜を緻密化しようとすると、皮膜の機能
が低下したり、また、コーティング剤の場合は密着性に
難点があって、厚手のセラミックス皮膜を得ることは困
難であり、適切な方法が知られていなかった。However, when attempting to densify the thermal sprayed coating of ceramics, the function of the coating deteriorates, and in the case of a coating agent, there is a difficulty in adhesion, and a thick ceramics coating is used. It was difficult to obtain and no suitable method was known.
【０００５】本発明は前記した問題点を解消し、密着力
が高く、しかも気孔率が小さい耐磨耗、耐食あるいは耐
熱性のセラミック皮膜を機械部材等の所定の表面に形成
する方法を提供することを目的としている。The present invention solves the above-mentioned problems and provides a method for forming a wear-resistant, corrosion-resistant or heat-resistant ceramic coating having a high adhesion and a low porosity on a predetermined surface of a mechanical member or the like. Is intended.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、本発明者は鋭意研究を重ねた結果、気孔率が大きい
セラミックス溶射皮膜は、基材への密着処理が容易であ
ることに着目し、かかる皮膜にたいして封孔処理を施す
ことが効果的であることを知見して、本発明を完成する
に至った。In order to achieve the above object, the inventors of the present invention have conducted extensive studies, and as a result, have noticed that a ceramic sprayed coating having a large porosity can be easily adhered to a substrate. The inventors have found that it is effective to apply a sealing treatment to such a film, and have completed the present invention.
【０００７】すなわち、本発明は、溶融メッキ浴に使用
するロールのような基材表面に、セラミックス、サーメ
ット等の溶射を行なって多気孔の皮膜を形成し、その気
孔部分に無機質液状コーティング剤を含浸、封孔処理
し、必要により焼成処理を施して生成するセラミックス
で前記皮膜を緻密化し強化する事を特徴とする、無機質
皮膜の強化方法を要旨としている。また溶射皮膜の表面
より微小孔を無数にあける加工を施し、該微小孔に無機
質液状コーティング剤を含浸、封孔処理し、必要により
焼成処理を施して生成するセラミックスで前記皮膜を緻
密化し強化する事を特徴とする、無機質皮膜の強化方法
をも要旨としている。That is, according to the present invention, ceramics, cermet or the like is sprayed on the surface of a base material such as a roll used in a hot dip bath to form a multi-pore film, and an inorganic liquid coating agent is applied to the pores. The gist is a method for strengthening an inorganic film, which is characterized by densifying and strengthening the film with a ceramic produced by impregnation, sealing treatment, and optionally firing treatment. In addition, a number of fine pores are processed from the surface of the sprayed coating, the fine pores are impregnated with an inorganic liquid coating agent, a pore-sealing treatment is performed, and if necessary, a baking treatment is performed to densify and strengthen the coating. The gist is also the method of strengthening the inorganic film, which is characterized by this.
【０００８】[0008]
【作用】本発明の構成と作用を説明する。本発明方法
は、溶射による基材上への皮膜生成と、該皮膜へのコー
ティング剤含浸の各工程から構成される。The structure and operation of the present invention will be described. The method of the present invention comprises steps of forming a film on a substrate by thermal spraying and impregnating the film with a coating agent.
【０００９】皮膜形成のための溶射工程は、後から含浸
させるコーティング剤を吸着するため、ある程度ポーラ
スである事が好ましい。しかし気孔率の大きい溶射皮膜
は概して密着力が低い。したがってこの場合の皮膜に
は、密着力の高いサーメット材料を、気孔を持つよう溶
射するのがよい。セラミックス溶射の場合には、気孔率
は大きいので適当な密着強度を持つように、溶射バウダ
ーの粒度、溶射条件を選定する。It is preferable that the thermal spraying process for forming the film is porous to some extent in order to adsorb the coating agent to be impregnated later. However, a sprayed coating having a large porosity generally has low adhesion. Therefore, the coating in this case is preferably sprayed with a cermet material having high adhesion so as to have pores. In the case of ceramics thermal spraying, since the porosity is large, the particle size of the thermal spraying bower and the thermal spraying conditions are selected so as to have an appropriate adhesion strength.
【００１０】サーメット材料としては、基材への密着性
が必要なため、Ｎｉ，Ｃｏ等の金属成分を重量で１５％
以下含有する材料が好ましい。セラミックス材料として
はアルミナ、チタニア等で好結果が得られている。ま
た、皮膜のセラミックス量を増量した場合、皮膜強度が
下がり、破壊され易くなる。As a cermet material, it is necessary to have adhesion to a base material, and therefore, metal components such as Ni and Co are 15% by weight.
The materials contained below are preferable. Good results have been obtained with alumina, titania, etc. as the ceramic material. Further, when the amount of ceramics in the film is increased, the film strength is lowered and the film is easily broken.
【００１１】一方、皮膜強度の高いセラミックスでも、
機能的には不十分な場合がある。これらの場合、含浸処
理により、別の有用なセラミックス皮膜を形成させるこ
とができる。したがって気孔率の範囲は一義的には定ま
らないが、高気孔率皮膜を含浸強化する場合、気孔率と
しては、５〜２０％の範囲が適当であることが確認され
ている。On the other hand, even with ceramics having high film strength,
It may not be functionally sufficient. In these cases, the impregnation treatment can form another useful ceramic film. Therefore, although the range of the porosity is not uniquely determined, it has been confirmed that the range of 5 to 20% is suitable as the porosity when the high porosity coating is impregnated and strengthened.
【００１２】含浸封孔剤は、目的とするセラミックスの
皮膜特性によって選定する。現在、各種の塗料やコーテ
ィング剤があるが、好結果が得られるのは、珪酸エチル
のような金属アルコキシドをアルコールに溶解したゾ
ル、ゲル法による薄膜形成、クロム酸塗布によるＣｒ2
Ｏ3薄膜形成などである。The impregnating and sealing agent is selected according to the film characteristics of the desired ceramic. Currently, there are various paints and coating agents, but good results are obtained by sol in which metal alkoxide such as ethyl silicate is dissolved in alcohol, thin film formation by gel method, Cr 2 by chromic acid coating.
For example, forming an O 3 thin film.
【００１３】また多成分系のアルコキシド・アルコール
溶液で、複合酸化物を充填することも可能である。また
これらの含浸剤は、多くの場合酸化物形成のために焼成
が必要となるが、その温度は数百℃以下で十分である。It is also possible to fill the complex oxide with a multi-component alkoxide / alcohol solution. In many cases, these impregnating agents require calcination for oxide formation, but the temperature is several hundreds of degrees Celsius or lower.
【００１４】緻密な溶射皮膜であっても、溶射層表面よ
り微細孔加工を行なうことによって、気孔と同様の目的
を達しうる。微細孔加工の方法としては、放電加工、レ
ーザー加工等が可能である。Even a dense thermal spray coating can achieve the same purpose as pores by processing fine pores from the surface of the thermal spray layer. As a method of fine hole processing, electric discharge processing, laser processing and the like are possible.
【００１５】溶射皮膜の厚さとしては、通常５０〜３０
０μｍの範囲がよく、含浸処理での皮膜への浸透深さは
溶射皮膜全厚でよいが、余盛厚は５０μｍ以下に押さえ
るのがよいようである。余盛皮膜が厚すぎるとセラミッ
クス皮膜のため剥離し易くなる。すなわち密着力の強い
溶射皮膜で、皮膜厚さを十分にとり、含浸コーティン
グ、焼成処理で皮膜気孔と連結した極薄の表面無機質皮
膜を１０μｍ程度付けるのがよいことが分かった。The thickness of the sprayed coating is usually 50 to 30.
The range of 0 μm is preferable, and the depth of penetration into the coating during the impregnation treatment may be the total thickness of the thermal spray coating, but the surplus thickness seems to be suppressed to 50 μm or less. If the surplus coating is too thick, it will be easy to peel because it is a ceramic coating. That is, it has been found that it is preferable that the coating film has a strong adhesion and the coating thickness is sufficient, and the ultrathin surface inorganic coating connected to the coating pores by impregnation coating and firing treatment is applied to about 10 μm.
【００１６】[0016]
【実施例】本発明の構成・効果を実施例により具体的に
説明するが、これにより本発明が限定されるものではな
い。本発明を溶融メッキ浴に使用するロールに適用した
実施例および比較例を、表１にまとめて示した。EXAMPLES The constitution and effects of the present invention will be specifically described by way of examples, but the present invention is not limited thereto. Table 1 collectively shows Examples and Comparative Examples in which the present invention was applied to a roll used in a hot dip bath.
【００１７】[0017]
【表１】 [Table 1]
【００１８】表１において、比較材と対比してみるとＮ
ｏ．１，Ｎｏ．２はセラミック溶射の場合で、気孔率が
大きいため含浸処理で密着強度は改善され、溶融Ｚｎ侵
入による表面のＺｎ付着面積率は大きく改善されてい
る。また、Ｎｏ．３，Ｎｏ．４のサーメット溶射の場合
も同様で、サーメット皮膜のため密着強度が高く、溶融
Ｚｎ侵入によるＺｎの付着が非常に少なくなっている。In Table 1, in comparison with the comparative material, N
o. 1, No. In the case of ceramic spraying, No. 2 has a high porosity, so that the adhesion strength is improved by the impregnation treatment, and the Zn adhesion area ratio on the surface due to molten Zn intrusion is greatly improved. In addition, No. 3, No. The same applies to the case of cermet thermal spraying of No. 4, because of the cermet coating, the adhesion strength is high, and the adhesion of Zn due to the penetration of molten Zn is extremely small.
【００１９】Ｎｏ．５は表面加工の場合で、表面加工の
みでは溶融Ｚｎの侵入があり、Ｚｎが付着するが、アル
ミニウム・アルコキシドアルコール液か、チタン・アル
コキシドアルコール液を塗布、焼成することにより、Ｚ
ｎ付着面積率は大きく低下した。しかし、比較材のよう
に研磨面に塗布したのみでは、形成セラミックス皮膜が
剥がれ易く、必ずしも良結果とはなっていない。すなわ
ち溶射皮膜の気孔が表層セラミックス皮膜のアンカー効
果を発揮していると考えられ、多孔質皮膜、含浸処理材
が溶融Ｚｎ付着が少ないことが分かる。No. No. 5 is a case of surface treatment, in which molten Zn penetrates only by the surface treatment and Zn adheres, but by applying and baking aluminum / alkoxide alcohol solution or titanium / alkoxide alcohol solution, Z
The n adhesion area ratio was greatly reduced. However, just by applying it to the polished surface like the comparative material, the formed ceramic film is easily peeled off, and the result is not always good. That is, it is considered that the pores of the thermal spray coating exert the anchor effect of the surface ceramics coating, and it is understood that the molten Zn adhesion of the porous coating and the impregnated material is small.
【００２０】[0020]
【発明の効果】本発明は、以上説明したように構成され
ているから、多孔質溶射皮膜の強度が著しく改善され、
高密着性という機能を付加する手段として極めて有用で
あり、産業上益するところ極めて大である。Since the present invention is constituted as described above, the strength of the porous sprayed coating is remarkably improved,
It is extremely useful as a means of adding the function of high adhesiveness, and is extremely large for industrial benefit.
Claims (3)
の溶射を行なって多気孔の皮膜を形成し、その気孔部分
に無機質液状コーティング剤を含浸、封孔処理し、必要
により焼成処理を施して生成するセラミックスで前記皮
膜を緻密化し強化する事を特徴とする、無機質皮膜の強
化方法。1. A surface of a base material is sprayed with ceramics, cermet or the like to form a multi-pore coating, and the pores are impregnated with an inorganic liquid coating agent, sealed, and optionally baked. A method for strengthening an inorganic coating, characterized in that the ceramic produced is densified to strengthen the coating.
加工を施す請求項１記載の無機質皮膜の強化方法。2. The method for strengthening an inorganic coating according to claim 1, wherein a process for forming a large number of micropores is performed on the surface of the thermal spray coating.
る請求項１または２記載の無機質皮膜の強化方法。3. The method for strengthening an inorganic coating according to claim 1, wherein the base material is a roll used in a hot dip bath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17135692A JPH0610112A (en) | 1992-06-29 | 1992-06-29 | Method for strengthening inorganic coating film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17135692A JPH0610112A (en) | 1992-06-29 | 1992-06-29 | Method for strengthening inorganic coating film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0610112A true JPH0610112A (en) | 1994-01-18 |
Family
ID=15921672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17135692A Pending JPH0610112A (en) | 1992-06-29 | 1992-06-29 | Method for strengthening inorganic coating film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0610112A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997032053A1 (en) * | 1996-02-28 | 1997-09-04 | Nippon Steel Hardfacing Co., Ltd. | A method of forming spray deposit |
| AU682696B2 (en) * | 1993-05-28 | 1997-10-16 | Combitech Traffic Systems Ab | A method and a device for the registration of the movement of a vehicle |
| JP2012062511A (en) * | 2010-09-15 | 2012-03-29 | Mitsubishi Heavy Ind Ltd | High temperature resistant member and gas turbine |
| JP2013129917A (en) * | 2013-03-19 | 2013-07-04 | Mitsubishi Heavy Ind Ltd | High temperature resistant member and gas turbine |
| JP2013136845A (en) * | 2013-03-19 | 2013-07-11 | Mitsubishi Heavy Ind Ltd | High temperature resistant member and gas turbine |
-
1992
- 1992-06-29 JP JP17135692A patent/JPH0610112A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU682696B2 (en) * | 1993-05-28 | 1997-10-16 | Combitech Traffic Systems Ab | A method and a device for the registration of the movement of a vehicle |
| WO1997032053A1 (en) * | 1996-02-28 | 1997-09-04 | Nippon Steel Hardfacing Co., Ltd. | A method of forming spray deposit |
| US5952054A (en) * | 1996-02-28 | 1999-09-14 | Nippon Steel Hardfacing Co., Ltd. | Method of forming spray deposit and integrated sealer layer |
| JP2012062511A (en) * | 2010-09-15 | 2012-03-29 | Mitsubishi Heavy Ind Ltd | High temperature resistant member and gas turbine |
| JP2013129917A (en) * | 2013-03-19 | 2013-07-04 | Mitsubishi Heavy Ind Ltd | High temperature resistant member and gas turbine |
| JP2013136845A (en) * | 2013-03-19 | 2013-07-11 | Mitsubishi Heavy Ind Ltd | High temperature resistant member and gas turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20001031 |