JP2003226985A - Highly corrosion resistant plated stainless steel sheet and production method therefor - Google Patents
Highly corrosion resistant plated stainless steel sheet and production method thereforInfo
- Publication number
- JP2003226985A JP2003226985A JP2002028243A JP2002028243A JP2003226985A JP 2003226985 A JP2003226985 A JP 2003226985A JP 2002028243 A JP2002028243 A JP 2002028243A JP 2002028243 A JP2002028243 A JP 2002028243A JP 2003226985 A JP2003226985 A JP 2003226985A
- Authority
- JP
- Japan
- Prior art keywords
- titanium
- stainless steel
- steel sheet
- titanium oxide
- cathodic protection
- Prior art date
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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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
- C23C28/322—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
- C23C28/321—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal alloy layer
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
- C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
- C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
- C23C28/3455—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer with a refractory ceramic layer, e.g. refractory metal oxide, ZrO2, rare earth oxides or a thermal barrier system comprising at least one refractory oxide layer
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Physical Vapour Deposition (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、厳しい腐食環境下
でも光を吸収することで高い耐食性を呈するめっきステ
ンレス鋼板及び製造方法に関する。TECHNICAL FIELD The present invention relates to a plated stainless steel sheet which exhibits high corrosion resistance by absorbing light even in a severe corrosive environment, and a manufacturing method.
【０００２】[0002]
【従来の技術】バンドギャップ以上のエネルギーを有す
る波長の光を照射した場合、光励起により伝導帯に電子
が生じ、価電子帯には正孔が生じる物質は、正孔が強い
酸化力を有するので、光照射の下で、有機物や水の分解
等に使用されている。このような物質として、Ｔｉ
Ｏ2，ＺｎＯ，ＺｒＯ2，ＷＯ3，Ｆｅ2Ｏ3，ＦｅＴｉ
Ｏ3，ＳｒＴｉＯ3等が挙げられる。なかでも酸化チタン
を利用するものが最も多く実用化されている。スパッタ
リング法やゾルゲル法で酸化チタンを直接被覆したステ
ンレス鋼板は、光照射の下で酸化チタン層を非犠牲アノ
ードとして、基板のステンレス鋼板のもつ腐食電位より
卑な電位を示すことが知られている。2. Description of the Related Art When a light having a wavelength having an energy larger than a band gap is irradiated, an electron is generated in a conduction band by photoexcitation and a hole is generated in a valence band, so that a hole has a strong oxidizing power. It is used to decompose organic substances and water under light irradiation. As such a substance, Ti
O 2 , ZnO, ZrO 2 , WO 3 , Fe 2 O 3 , FeTi
Examples include O 3 and SrTiO 3 . Among them, the one using titanium oxide is most practically used. It is known that the stainless steel sheet directly coated with titanium oxide by the sputtering method or the sol-gel method shows a base potential lower than the corrosion potential of the stainless steel sheet of the substrate when the titanium oxide layer is used as a non-sacrificial anode under light irradiation. .
【０００３】[0003]
【発明が解決しようとする課題】前記の酸化チタン被覆
ステンレス鋼板における酸化チタン層と基材との界面に
は、不動態皮膜や不純物が存在することから、実環境で
ある沿岸等の腐食環境下でステンレス鋼板はカソード防
食されず赤錆を発生する。一方、特開平８−２４６１９
２号公報には、チタンまたはチタン基合金基材の表面
に、酸化チタン層を形成することにより、光励起を有す
ることが紹介されている。しかし、これらのチタン基材
表面に、酸化チタン層を形成する場合、チタン基材を陽
極酸化した後、酸化性雰囲気中で加熱処理する必要があ
る。酸化チタン層と基材との間に絶縁膜が形成されるた
め、光照射により酸化チタン層を非犠牲アノードとし
て、基材をカソード防食することは望めない。Since a passive film and impurities are present at the interface between the titanium oxide layer and the base material in the titanium oxide-coated stainless steel sheet described above, it is not possible to use it in a corrosive environment such as a coastal environment which is the actual environment. Therefore, the stainless steel plate is not cathodic protected and red rust occurs. On the other hand, JP-A-8-24619
Japanese Unexamined Patent Publication No. 2 (1993) describes that a titanium oxide layer is formed on the surface of a titanium or titanium-based alloy base material to have photoexcitation. However, when forming a titanium oxide layer on the surface of these titanium base materials, it is necessary to subject the titanium base material to anodization and then perform heat treatment in an oxidizing atmosphere. Since the insulating film is formed between the titanium oxide layer and the base material, it is not possible to use the titanium oxide layer as a non-sacrificial anode to perform cathodic protection of the base material by light irradiation.
【０００４】[0004]
【課題を解決するための手段】本発明は、このような問
題を解消すべく案出されたものであり、所定量のチタン
またはチタン合金を被覆した金属板を酸化性雰囲気中で
熱処理することによって、該チタンまたはチタン合金の
表層に薄膜の酸化チタン層を形成させ、光照射でカソー
ド防食が可能な材料を提供することを目的とする。The present invention has been devised to solve such a problem, and heat-treats a metal plate coated with a predetermined amount of titanium or titanium alloy in an oxidizing atmosphere. A thin titanium oxide layer is formed on the surface layer of the titanium or titanium alloy to provide a material capable of cathodic protection by light irradiation.
【０００５】本発明は、その目的を達成するために、ス
テンレス鋼板を基板に、厚さ０．０５μｍ以上のチタン
またはチタン合金めっきを施し、該めっき最表層に酸化
チタン皮膜を形成した。ステンレス鋼板基板へのチタン
またはチタン合金めっき被覆はスパッタリング法にて行
い、めっき層形成後に酸化性雰囲気４００℃以上の温度
で熱処理し、表層に酸化チタン皮膜を形成した。In the present invention, in order to achieve the object, a stainless steel plate is coated on a substrate with titanium or titanium alloy having a thickness of 0.05 μm or more, and a titanium oxide film is formed on the outermost layer of the plating. The titanium or titanium alloy plating coating on the stainless steel plate substrate was performed by a sputtering method, and after the plating layer was formed, a heat treatment was performed at a temperature of 400 ° C. or higher in an oxidizing atmosphere to form a titanium oxide film on the surface layer.
【０００６】[0006]
【発明の実施の形態】本発明の高耐食性めっきステンレ
ス鋼板は、ステンレス基板表面にチタンまたはチタン合
金めっき層を施し、酸化性雰囲気中で熱処理すること
で、最表層に形成された酸化チタン層を非犠牲アノード
として作用させ、カソード防食が可能となる。チタンま
たはチタン合金をステンレス鋼板に被覆する方法は、物
理蒸着法等が挙げられる。なかでも、廃液等の発生がな
く、効率的に被覆するためにはスパッタリング法が好ま
しい。スパッタリング法により形成されたチタンまたは
チタン合金層の厚さは、０．０５μｍ以上とする。チタ
ンまたはチタン合金層の厚さが０．０５μｍ未満では、
カソード防食効果が得られない。BEST MODE FOR CARRYING OUT THE INVENTION The highly corrosion-resistant plated stainless steel sheet of the present invention has a titanium or titanium alloy plating layer formed on the surface of a stainless steel substrate and heat-treated in an oxidizing atmosphere to form a titanium oxide layer formed on the outermost layer. It acts as a non-sacrificial anode and allows cathodic protection. Examples of the method of coating the stainless steel plate with titanium or a titanium alloy include physical vapor deposition. Among them, the sputtering method is preferable in order to coat efficiently without generation of waste liquid. The thickness of the titanium or titanium alloy layer formed by the sputtering method is 0.05 μm or more. When the thickness of the titanium or titanium alloy layer is less than 0.05 μm,
Cathodic protection cannot be obtained.
【０００７】チタンまたはチタン合金めっきステンレス
鋼板を４００℃以上の酸化性雰囲気中で３０秒間以上熱
処理する。酸化性雰囲気温度が４００℃未満であった
り、３０秒に達しない短時間処理では、最表層全体が酸
化チタン層にならず、十分なカソード防食機能が発現で
きない。また、基板の軟化温度を越える熱処理では、基
板形状が損なわれるので好ましくない。熱処理により形
成される酸化チタン層は薄膜であり、加工しても酸化チ
タン層へ影響する程の応力集中はないものと考えられ
る。したがって、本発明の酸化チタン層を有するチタン
合金めっきステンレス鋼板を、成形加工で変形しても、
酸化チタン層の剥離は皆無であり、加工部のカソード防
食機能を十分発揮できる。最表層に酸化チタン層が形成
されたチタンまたはチタン合金めっきを施すことによる
カソード防食は、ステンレス鋼のみならず、光非照射時
の浸漬電位（腐食電位）が光照射時より貴な電位を示す
金属であれば、めっき鋼板等種々の金属にも応用でき
る。A titanium or titanium alloy-plated stainless steel plate is heat-treated for 30 seconds or longer in an oxidizing atmosphere at 400 ° C. or higher. If the oxidizing atmosphere temperature is less than 400 ° C. or a short time treatment that does not reach 30 seconds, the entire outermost layer does not become a titanium oxide layer, and a sufficient cathodic protection function cannot be exhibited. Further, the heat treatment exceeding the softening temperature of the substrate is not preferable because the shape of the substrate is impaired. The titanium oxide layer formed by the heat treatment is a thin film, and it is considered that there is no stress concentration enough to affect the titanium oxide layer even if it is processed. Therefore, even if the titanium alloy-plated stainless steel sheet having the titanium oxide layer of the present invention is deformed by molding,
There is no peeling of the titanium oxide layer, and the cathodic protection function of the processed part can be fully exerted. Cathodic protection by applying titanium or titanium alloy plating with titanium oxide layer formed on the outermost layer shows not only stainless steel, but also the immersion potential (corrosion potential) when exposed to light, which is noble than when exposed to light. Any metal can be applied to various metals such as plated steel sheets.
【０００８】このように、最表層に酸化チタン層が形成
されたチタンまたはチタン合金めっきステンレス鋼板
は、光照射下において、酸化チタン層を非犠牲アノード
とするカソード防食が可能となり、腐食環境下において
も高耐食性を呈するため、沿岸等の屋外や蛍光灯の光が
存在する屋内でも使用可能である。As described above, the titanium or titanium alloy-plated stainless steel sheet having the titanium oxide layer formed on the outermost layer can be subjected to cathodic protection using the titanium oxide layer as a non-sacrificial anode under light irradiation, and in a corrosive environment. Since it has high corrosion resistance, it can be used outdoors such as on the coast or indoors where there is light from a fluorescent lamp.
【０００９】[0009]
【実施例】板厚０．５ｍｍのＳＵＳ４３０ステンレス鋼
板に、マグネトロン型スパッタリング装置（出力；１０
ＫＷ）で厚さ０．０１〜５μｍの純チタン（９９．９ｗ
ｔ％Ｔｉ）を被覆した後、大気中で６００℃×３０秒間
熱処理した。なお、ディツプコーティング装置（ゾルゲ
ル法）で酸化チタンを形成した（大気中で４５０℃×３
分間焼成、酸化チタンの厚さ０．１μｍ）ものを比較材
とした。これらの金属板表面に光照射を行い、カソード
防食効果を次に示す方法で調査した。EXAMPLE A magnetron type sputtering device (output: 10) was used on a SUS430 stainless steel plate having a plate thickness of 0.5 mm.
KW) pure titanium with a thickness of 0.01-5 μm (99.9w
After coating with t% Ti), it was heat-treated in the atmosphere at 600 ° C. for 30 seconds. Titanium oxide was formed by a dip coating device (sol-gel method) (450 ° C. × 3 in air).
A material that was calcined for one minute and had a titanium oxide thickness of 0.1 μm) was used as a comparative material. The surface of these metal plates was irradiated with light, and the cathodic protection effect was investigated by the following method.
【００１０】光非照射時の浸漬電位より光照射時の浸漬
電位が卑な電位を示すことがカソード防食の必須条件で
あり、まず、光照射有無による試料の電位測定を行っ
た。光源には、ブラックライト（紫外線強度；９ｍＷ／
ｃｍ2）を用い、試料は０．３質量％ＮａＣｌ水溶液に
浸漬し、浸漬面を４×４ｃｍ□とした。浸漬電位は水溶
液を攪拌しながら、非照射２０分間、照射後３０分間、
非照射２０分間のサイクルで測定した。比較電極はＡｇ
／ＡｇＣｌを用いた。光照射時の浸漬電位が、光非照射
時の浸漬電位よりも５０ｍＶ以上卑な電位であり、か
つ、基板のＳＵＳ４３０ステンレス鋼板の浸漬電位より
も５０ｍＶ以上卑な電位である場合をカソード防食効果
があるとして○、いずれの浸漬電位よりも５０ｍＶ未満
卑な電位である場合をカソード防食効果に改善がないと
して×とした。It is an essential condition for cathodic protection that the immersion potential when exposed to light is lower than the immersion potential when not exposed to light. First, the potential of the sample was measured with and without light irradiation. Black light (UV intensity; 9 mW /
cm 2 ), the sample was immersed in a 0.3 mass% NaCl aqueous solution, and the immersion surface was set to 4 × 4 cm □. The immersion potential is 20 minutes for non-irradiation and 30 minutes after irradiation while stirring the aqueous solution.
The measurement was performed in a non-irradiated cycle of 20 minutes. The reference electrode is Ag
/ AgCl was used. When the immersion potential at the time of light irradiation is 50 mV or more lower than the immersion potential at the time of non-irradiation and is 50 mV or more lower than the immersion potential of the SUS430 stainless steel plate of the substrate, the cathodic protection effect is obtained. If the potential was less than 50 mV lower than any of the immersion potentials, there was no improvement in the cathodic protection effect, and the result was rated as x.
【００１１】表１に、各めっきステンレス鋼板の浸漬電
位によるカソード防食効果を示す。チタンの厚さ０．０
５μｍ未満では、カソード防食効果がないのに対し、
０．０５μｍ以上では高いカソード防食効果を示した。
また、比較材のゾルゲル材はカソード防食効果がなく、
光照射によるカソード防食は望めない。Table 1 shows the cathodic protection effect by the immersion potential of each plated stainless steel plate. Titanium thickness 0.0
If it is less than 5 μm, there is no cathodic protection, whereas
When it was 0.05 μm or more, a high cathodic protection effect was exhibited.
Also, the sol-gel material of the comparative material has no cathodic protection,
Cathodic protection by light irradiation cannot be expected.
【００１２】[0012]
【表１】 [Table 1]
【００１３】次に、耐食性を調査するため、光照射下
（紫外線強度；９ｍＷ／ｃｍ2）、２５℃雰囲気で塩水
浸漬２０時間，乾燥４時間のサイクル試験を行い、１ヶ
月後の赤錆発生有無を観察した。表２に、各めっきステ
ンレス鋼板の耐食性試験結果を示す。ステンレス鋼板ま
ま、及びチタンの厚さが０．０５μｍ未満では赤錆の発
生が著しいのに対し、チタンの厚さが０．０５μｍ以上
では、赤錆の発生が認められず、高いカソード防食効果
を示した。また、比較材のゾルゲル材はカソード防食効
果がなく、光照射によるカソード防食は望めない。Next, in order to investigate the corrosion resistance, a cycle test was conducted under irradiation of light (ultraviolet intensity; 9 mW / cm 2 ) in a 25 ° C. atmosphere in salt water for 20 hours and drying for 4 hours. Was observed. Table 2 shows the corrosion resistance test results of each plated stainless steel sheet. When the thickness of titanium was less than 0.05 μm, red rust was remarkable, whereas when the thickness of titanium was 0.05 μm or more, no red rust was observed and a high cathodic protection effect was exhibited. . Moreover, the sol-gel material of the comparative material has no cathodic protection, and cathodic protection by light irradiation cannot be expected.
【００１４】[0014]
【表２】 [Table 2]
【００１５】板厚０．５ｍｍのＳＵＳ４３０ステンレス
鋼板に、厚さ０．５μｍの純チタンを被覆し、大気中で
４００〜８００℃×３０分間熱処理した。これらの試料
について、光照射有無による電位測定と、塩水浸漬によ
る耐食性試験を行った結果を表３に示す。非熱処理材で
は、カソード防食効果に改善がみられず、赤錆が発生し
たのに対し、本発明のめっきステンレス鋼板は、何れも
高いカソード防食効果を示し、赤錆の発生が認められな
かった。A 0.5 mm-thick SUS430 stainless steel plate was coated with pure titanium having a thickness of 0.5 μm and heat-treated in the atmosphere at 400 to 800 ° C. for 30 minutes. Table 3 shows the results of the potential measurement of these samples with and without light irradiation and the corrosion resistance test by immersion in salt water. In the non-heat treated material, no improvement was observed in the cathodic protection effect and red rust was generated, whereas the plated stainless steel sheets of the present invention showed a high cathodic protection effect, and no red rust was observed.
【００１６】[0016]
【表３】 [Table 3]
【００１７】さらに、Ｔｉ−５Ａｌ−２Ｓｎ−２Ｚｒ−
４Ｍｏ−４ｗｔ％Ｃｒ，Ｔｉ−６Ａｌ−４ｗｔ％Ｖ，Ｔ
ｉ−６Ａｌ−６Ｖ−２ｗｔ％Ｓｎ，Ｔｉ−６Ａｌ−２Ｓ
ｎ−４Ｚｒ−２ｗｔ％Ｍｏ，Ｔｉ−６Ａｌ−２Ｓｎ−４
Ｚｒ−６ｗｔ％Ｍｏ，Ｔｉ−８Ａｌ−１Ｖ−１ｗｔ％Ｍ
ｏ，Ｔｉ−９Ｖ−２Ｍｏ−３ｗｔ％Ａｌ，Ｔｉ−１０Ｖ
−２Ｆｅ−３ｗｔ％Ａｌ，Ｔｉ−１５Ｖ−３Ｓｎ−３Ｃ
ｒ−３ｗｔ％Ａｌ，Ｔｉ−３４ｗｔ％Ａｌ，Ｔｉ−３６
ｗｔ％Ａｌの各種チタン合金を被覆したステンレス鋼板
について、同様な熱処理を行い、光照射の有無による試
料の電位測定と、塩水浸漬による耐食性試験を行った結
果、本発明のめっきステンレス鋼板は何れも高いカソー
ド防食効果を示した。Further, Ti-5Al-2Sn-2Zr-
4Mo-4wt% Cr, Ti-6Al-4wt% V, T
i-6Al-6V-2wt% Sn, Ti-6Al-2S
n-4Zr-2wt% Mo, Ti-6Al-2Sn-4
Zr-6wt% Mo, Ti-8Al-1V-1wt% M
o, Ti-9V-2Mo-3wt% Al, Ti-10V
-2Fe-3wt% Al, Ti-15V-3Sn-3C
r-3 wt% Al, Ti-34 wt% Al, Ti-36
The same heat treatment was performed on the stainless steel sheets coated with various titanium alloys of wt% Al, the potential of the sample was measured with or without light irradiation, and the corrosion resistance test by salt water immersion was performed. It showed a high cathodic protection effect.
【００１８】[0018]
【発明の効果】以上に説明したように、本発明に従った
所定量のチタンまたはチタン合金めっきステンレス鋼板
は、めっき後酸化性雰囲気中で熱処理することにより、
最表層に薄膜酸化チタンを形成させ、光照射した場合、
酸化チタン層を非犠牲アノードとして作用し、ステンレ
ス鋼板のカソード防食が可能になる。そのため、沿岸等
の外装及び内装建材等の各種形状に加工しても高耐食性
を呈する。As described above, the predetermined amount of titanium or titanium alloy-plated stainless steel sheet according to the present invention is treated by heat treatment in an oxidizing atmosphere after plating,
When thin film titanium oxide is formed on the outermost layer and irradiated with light,
The titanium oxide layer acts as a non-sacrificial anode, enabling cathodic protection of stainless steel plates. Therefore, it exhibits high corrosion resistance even when processed into various shapes such as exterior and interior building materials on the coast.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4K029 AA02 BA48 BC01 CA05 DC03 DC39 EA01 EA08 GA01 4K044 AA03 AB02 BA02 BA12 BB03 BC02 CA12 CA13 ─────────────────────────────────────────────────── ─── Continued front page F-term (reference) 4K029 AA02 BA48 BC01 CA05 DC03 DC39 EA01 EA08 GA01 4K044 AA03 AB02 BA02 BA12 BB03 BC02 CA12 CA13
Claims (2)
μｍ以上のチタンまたはチタン合金めっきを施し、該め
っき最表層に酸化チタン皮膜を形成することを特徴とす
る高耐食性めっきステンレス鋼板。1. A stainless steel plate as a substrate with a thickness of 0.05.
A highly corrosion-resistant plated stainless steel sheet, characterized by being plated with titanium or titanium alloy having a thickness of at least μm and forming a titanium oxide film on the outermost surface layer of the plating.
チタン合金めっき層をスパッタリング法にて厚さ０．０
５μｍ以上施した後、酸化性雰囲気４００℃以上の温度
で熱処理することにより、酸化チタン皮膜を形成するこ
とを特徴とする高耐食性めっきステンレス鋼板の製造方
法。2. A stainless steel plate is used as a substrate, and a titanium or titanium alloy plating layer is formed by sputtering to a thickness of 0.0.
A method for producing a highly corrosion-resistant plated stainless steel sheet, which comprises forming a titanium oxide film by applying a heat treatment at a temperature of 400 ° C. or more in an oxidizing atmosphere after applying the coating having a thickness of 5 μm or more.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007518881A (en) * | 2004-01-21 | 2007-07-12 | フォルシュングスツェントルム・ユーリッヒ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Protective layer for aluminum-containing alloys for use at high temperatures and method for producing such a protective layer |
| JP2015515538A (en) * | 2012-02-23 | 2015-05-28 | トレードストーン テクノロジーズ インク | Metal substrate surface coating method, electrochemical device, and fuel cell plate |
-
2002
- 2002-02-05 JP JP2002028243A patent/JP2003226985A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007518881A (en) * | 2004-01-21 | 2007-07-12 | フォルシュングスツェントルム・ユーリッヒ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Protective layer for aluminum-containing alloys for use at high temperatures and method for producing such a protective layer |
| JP2015515538A (en) * | 2012-02-23 | 2015-05-28 | トレードストーン テクノロジーズ インク | Metal substrate surface coating method, electrochemical device, and fuel cell plate |
| KR102061922B1 (en) * | 2012-02-23 | 2020-01-02 | 트레드스톤 테크놀로지스, 인크. | Corrosion resistant and electrically conductive surface of metal |
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