JP2001199725A - Method for producing titanium oxide - Google Patents
Method for producing titanium oxideInfo
- Publication number
- JP2001199725A JP2001199725A JP2000002465A JP2000002465A JP2001199725A JP 2001199725 A JP2001199725 A JP 2001199725A JP 2000002465 A JP2000002465 A JP 2000002465A JP 2000002465 A JP2000002465 A JP 2000002465A JP 2001199725 A JP2001199725 A JP 2001199725A
- Authority
- JP
- Japan
- Prior art keywords
- titanium
- temperature
- titanium oxide
- base material
- cooling
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は酸化チタンの製造
方法に関し、特に、チタンあるいはチタン合金の表面に
酸化チタンの被膜を形成して、この被膜に接している酸
素や水分を分解して有機物の分解や抗菌作用を発揮する
ようにした酸化チタンの製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing titanium oxide, and more particularly to a method for forming a titanium oxide film on the surface of titanium or a titanium alloy and decomposing oxygen and moisture in contact with the film to form organic matter. The present invention relates to a method for producing titanium oxide which exhibits a decomposition and antibacterial action.
【０００２】[0002]
【従来の技術】現在、化学物質の分解を促すために光の
作用を用いる光触媒を使用することが知られている。こ
の光触媒とは酸化チタン、酸化亜鉛など光のエネルギー
を受けて化学反応を促進する物質の総称であり、たとえ
ば、水中で酸化チタンに光をあてると水が酸素と水素と
に分解されることから始まり、光触媒に紫外線が当たる
とマイナスの電荷を持つ電子と、プラスの電荷を持つ正
孔という部分ができ、これらが表面に接触している酸素
や水を分解して有機物の分解や抗菌作用を持つ活性酸素
を作り出すようになっている。2. Description of the Related Art At present, it is known to use photocatalysts that use the action of light to promote the decomposition of chemical substances. This photocatalyst is a general term for substances that promote chemical reactions by receiving light energy, such as titanium oxide and zinc oxide.For example, when light is applied to titanium oxide in water, water is decomposed into oxygen and hydrogen. When ultraviolet light hits the photocatalyst, it creates electrons with negative charges and holes with positive charges, which decompose oxygen and water that are in contact with the surface and decompose organic substances and have antibacterial action. It produces active oxygen.
【０００３】そして、酸化チタンにはルチル型やアナタ
ーゼ型というものが存在するが、それらは粉末や液状で
あるために、化粧品や塗料に混入した状態で使用するよ
うになっている。[0003] Titanium oxides include rutile type and anatase type, and since they are powder or liquid, they are used in a state of being mixed in cosmetics or paints.
【０００４】したがって、この発明の発明者らは光触媒
を粉末や液状ではなく、表面に酸化チタンの被膜、すな
わち、光触媒を形成することを日々研究していた。そし
て、その結果として、チタンおよびチタン合金の表面に
酸化チタンの被膜である光触媒を製造する方法を見いだ
した。Accordingly, the inventors of the present invention have been studying the formation of a photocatalyst, not a powder or a liquid, but a titanium oxide film on the surface, that is, a photocatalyst. As a result, they have found a method for producing a photocatalyst which is a film of titanium oxide on the surface of titanium and a titanium alloy.
【０００５】この発明の目的は、チタンおよびチタン合
金の表面に光触媒である酸化チタンの被膜を形成し、し
かも、酸化チタンの被膜の色彩および厚みを任意に設定
できる酸化チタンの製造方法を提供することにある。An object of the present invention is to provide a method for producing titanium oxide in which a titanium oxide film as a photocatalyst is formed on the surface of titanium and a titanium alloy, and the color and thickness of the titanium oxide film can be arbitrarily set. It is in.
【０００６】[0006]
【問題点を解決するための手段】上記の目的を達成する
ためにこの発明は、チタン材あるいはチタン合金材であ
る母材を酸洗い工程で酸洗いするとともに、この酸洗い
後に洗浄工程で洗浄し、こののち熱処理工程で酸素を加
えながら常温から約３００℃〜９００℃の範囲内の所定
の温度に昇温し、この所定の温度で酸素を供給しつつ所
定時間加熱保持し、その後冷却して常温に戻す構成を有
している。そして、前記チタン材あるいはチタン合金材
である母材は、酸洗いした後洗浄する間に、湿式および
乾式のバレル研磨がなされることも採用することができ
る。さらに、前記常温から約３００℃〜９００℃までの
昇温は１分０．５〜５℃の割りで行うようになってい
る。さらにまた、前記母材は陽極酸化されたチタン材あ
るいはチタン合金材を採用した構成を有している。そし
て、前記所定時間加熱保持した後の冷却は、急冷から自
然降下冷却あるいは徐冷である。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a method of pickling a base material, which is a titanium material or a titanium alloy material, in a pickling step, and cleaning in a cleaning step after the pickling. Thereafter, the temperature is raised from room temperature to a predetermined temperature in a range of about 300 ° C. to 900 ° C. while adding oxygen in a heat treatment step, and heated and held for a predetermined time while supplying oxygen at the predetermined temperature, and then cooled. To return to room temperature. In addition, it is also possible to adopt a method in which the base material made of the titanium material or the titanium alloy material is subjected to wet and dry barrel polishing during washing after pickling. Further, the temperature rise from the normal temperature to about 300 ° C. to 900 ° C. is performed at a rate of 0.5 ° C. to 5 ° C. for 1 minute. Furthermore, the base material has a configuration employing an anodized titanium material or titanium alloy material. The cooling after the heating and holding for the predetermined time is rapid cooling, spontaneous cooling, or slow cooling.
【０００７】[0007]
【作用】この発明は上記の手段を採用したことにより、
約３００℃〜９００℃の範囲内で加熱した温度に応じて
母材の表面に形成される酸化チタンの被膜である光触媒
の色彩および厚みを任意に設定することができることと
なる。According to the present invention, the above means are adopted.
The color and the thickness of the photocatalyst, which is a titanium oxide film formed on the surface of the base material, can be arbitrarily set according to the heating temperature in the range of about 300 ° C to 900 ° C.
【０００８】[0008]
【発明の実施の形態】以下、図面に示すこの発明の実施
の形態について説明する。図１にはこの発明による酸化
チタンの製造方法の工程が示されている。Embodiments of the present invention shown in the drawings will be described below. FIG. 1 shows steps of a method for producing titanium oxide according to the present invention.
【０００９】図１において、まず、酸洗い工程２におい
て母材１であるチタン材あるいはチタン合金材をフッ酸
と硝酸との混合液で酸洗いをし、この後に湿式のバレル
研磨工程３および乾式のバレル研磨工程４を行う。その
後に洗浄工程５において十分に洗浄を行った後に熱処理
工程６において約３００℃〜９００℃の範囲で熱処理を
行う。In FIG. 1, first, in a pickling step 2, a titanium material or a titanium alloy material as a base material 1 is pickled with a mixed solution of hydrofluoric acid and nitric acid, and thereafter, a wet barrel polishing step 3 and a dry Is performed in barrel polishing step 4. Thereafter, after sufficient cleaning is performed in a cleaning step 5, a heat treatment is performed in a heat treatment step 6 in a range of about 300 ° C. to 900 ° C.
【００１０】この熱処理工程６においては、常温から約
３００℃〜９００℃までの昇温は１分０．５〜５℃の温
度上昇で行うものであり、そして、目的の温度で所定時
間、たとえば５分〜２時間の間で加熱（温度保持）する
が、この昇温および保持時、すなわち、チタン材あるい
はチタン合金材の加熱中は積極的に空気（酸素）を供給
する。この空気の供給は大気を導入したり、酸素を導入
することで行われる。なお、前記加熱温度は、加熱した
温度によってチタン材あるいはチタン合金材の表面に形
成される被膜である酸化チタンの色彩および厚みが異な
るために、所望の色彩および厚みを得るために行われる
ものである。In the heat treatment step 6, the temperature is raised from room temperature to about 300 ° C. to 900 ° C. by a temperature rise of 0.5 to 5 ° C. for 1 minute, and is performed at a target temperature for a predetermined time, for example, for example. Heating (temperature holding) is performed for 5 minutes to 2 hours, and air (oxygen) is positively supplied during the heating and holding, that is, during heating of the titanium material or the titanium alloy material. This supply of air is performed by introducing air or oxygen. Note that the heating temperature is performed to obtain a desired color and thickness because the color and thickness of the titanium oxide, which is a film formed on the surface of the titanium material or the titanium alloy material, vary depending on the heating temperature. is there.
【００１１】上記のように所定の温度に昇温した後に所
定時間の温度保持をして加熱し、その後に徐冷すると、
チタン材あるいはチタン合金材の表面に被膜である酸化
チタンが形成され、この酸化チタンの被膜は光触媒とし
ての機能を有している。As described above, after the temperature is raised to the predetermined temperature, the temperature is maintained for a predetermined time and the heating is performed.
Titanium oxide, which is a coating, is formed on the surface of a titanium material or a titanium alloy material, and the titanium oxide coating has a function as a photocatalyst.
【００１２】上記のようにして製造された酸化チタンの
被膜は光触媒であるので、表面に接触している酸素や水
を分解して有機物の分解や抗菌作用を持つ活性酸素を作
り出すようになっている。Since the titanium oxide film produced as described above is a photocatalyst, it decomposes oxygen and water in contact with the surface to produce active oxygen having decomposition of organic substances and antibacterial action. I have.
【００１３】なお、前記熱処理工程６においては、チタ
ン材およびチタン合金材を母材１とするだけではなく、
陽極酸化したチタン材およびチタン合金材を母材１とす
ることができる。この場合、陽極酸化とは、酸化被膜を
電気の力で人工的に作ることを言い、チタン材あるいは
チタン合金材の表面に強い電場を与えて、その力によっ
てチタンイオンを引出して酸素と化合させて酸化チタン
層を形成させるものである。そのためには、酸性やアル
カリ性または中性の電解液の中で、チタンやチタン合金
素材を陽極（＋）に、カーボンやステンレスなどの電導
性を有するものを陰極（−）にして、１０ボルト〜２０
０ボルトの電圧をかけて電解すると、チタンやチタン合
金素材の表面に酸素と化合した酸化チタン層が形成され
る。この酸化チタン層は屈曲率の高い透明な膜を形成し
ており、この被膜がプリズムの役割を果たして、光線を
屈曲させる為、光が干渉し合って色々な色調をだすこと
ができる。なお、酸化チタン層の厚みは電解液の種類
と、温度、電圧、電解時間により変化するが、数オング
ストローム〜数ミクロンである。In the heat treatment step 6, not only the titanium material and the titanium alloy material are used as the base material 1, but also
The base material 1 can be an anodized titanium material and a titanium alloy material. In this case, anodic oxidation refers to the artificial formation of an oxide film by the use of electric power. A strong electric field is applied to the surface of a titanium material or a titanium alloy material, and titanium oxide is extracted by the force and combined with oxygen. To form a titanium oxide layer. For this purpose, in an acidic, alkaline or neutral electrolytic solution, titanium or a titanium alloy material is used as an anode (+), and a conductive material such as carbon or stainless steel is used as a cathode (-) and a voltage of 10 volts or more is used. 20
When electrolysis is performed with a voltage of 0 volt, a titanium oxide layer combined with oxygen is formed on the surface of the titanium or titanium alloy material. This titanium oxide layer forms a transparent film having a high bending ratio, and this film serves as a prism to bend light rays, so that light interferes with each other to produce various colors. The thickness of the titanium oxide layer varies depending on the type of the electrolyte, the temperature, the voltage, and the electrolysis time, but is from several angstroms to several microns.
【００１４】[0014]
【発明の効果】この発明は前記のように、チタン材ある
いはチタン合金材である母材を酸洗い工程で酸洗いする
とともに、この酸洗い後に洗浄工程で洗浄し、こののち
熱処理工程で酸素を加えながら常温から約３００℃〜９
００℃の範囲内の所定の温度に昇温し、この所定の温度
で所定時間加熱保持し、その後冷却して常温に戻すこと
で母材の表面に酸化チタンである光触媒の強固な被膜を
形成できるので、この被膜と接している酸素や水を分解
して有機物の分解や抗菌作用を持つ活性酸素を作りだす
ことができる。しかも、加熱する温度に応じて被膜の色
彩を得ることができるので装飾的に優れているととも
に、厚みも決められるので対磨耗性を高めることができ
る。そして、チタン材やチタン合金材を陽極酸化したも
のを母材としてこの発明によって処理することで、陽極
酸化だけの場合と比較して被膜が剥離し難くなり強固
で、しかも装飾的に優れた被膜を形成することができる
という効果を有している。According to the present invention, as described above, the base material, which is a titanium material or a titanium alloy material, is pickled in the pickling step, washed in the washing step after the pickling, and then oxygen is removed in the heat treatment step. From room temperature to about 300 ℃ -9 while adding
The temperature is raised to a predetermined temperature in the range of 00 ° C., heated and maintained at the predetermined temperature for a predetermined time, and then cooled and returned to a normal temperature, thereby forming a strong coating of a titanium oxide photocatalyst on the surface of the base material. As a result, it is possible to decompose oxygen and water in contact with this film and to produce active oxygen having decomposition of organic substances and antibacterial action. In addition, since the color of the coating can be obtained according to the heating temperature, the coating is excellent in decoration, and the thickness can be determined, so that the abrasion resistance can be enhanced. Then, by treating the titanium material or titanium alloy material by anodizing as a base material according to the present invention, the film is harder to be peeled off than in the case of only anodizing, and the film is strong and decoratively excellent. Can be formed.
【図１】この発明による酸化チタンの製造方法を実施す
るための工程を示す図である。FIG. 1 is a diagram showing steps for carrying out a method for producing titanium oxide according to the present invention.
１……母材 ２……酸洗い工程 ３……バレル研磨工程（湿式） ４……バレル研磨工程（乾式） ５……洗浄工程 ６……熱処理工程 DESCRIPTION OF SYMBOLS 1 ... Base material 2 ... Pickling process 3 ... Barrel polishing process (wet type) 4 ... Barrel polishing process (dry type) 5 ... Cleaning process 6 ... Heat treatment process
Claims (5)
材を酸洗い工程で酸洗いするとともに、この酸洗い後に
洗浄工程で洗浄し、こののち熱処理工程で酸素を加えな
がら常温から約３００℃〜９００℃の範囲内の所定の温
度に昇温し、この所定の温度で酸素を供給しつつ所定時
間加熱保持し、その後冷却して常温に戻すことを特徴と
する酸化チタンの製造方法。1. A method of pickling a base material, which is a titanium material or a titanium alloy material, in a pickling step, and after the pickling, cleaning in a cleaning step. A method for producing titanium oxide, comprising raising the temperature to a predetermined temperature within a range of 900 ° C., heating and maintaining the predetermined temperature while supplying oxygen at the predetermined temperature, and then cooling the temperature to a normal temperature.
る母材は、酸洗いした後洗浄する間に、湿式および乾式
のバレル研磨がなされる請求項１記載の酸化チタンの製
造方法。2. The method for producing titanium oxide according to claim 1, wherein the base material made of a titanium material or a titanium alloy material is subjected to wet and dry barrel polishing during washing after pickling.
の昇温は１分０．５〜５℃の割りで行う請求項１記載の
酸化チタンの製造方法。3. The method for producing titanium oxide according to claim 1, wherein the temperature is raised from room temperature to about 300 ° C. to 900 ° C. at a rate of 0.5 to 5 ° C. for 1 minute.
いはチタン合金材である請求項１記載の酸化チタンの製
造方法。4. The method according to claim 1, wherein the base material is an anodized titanium material or a titanium alloy material.
急冷から自然降下冷却あるいは徐冷である請求項１記載
の酸化チタンの製造方法。5. The cooling after heating and holding for a predetermined time,
2. The method for producing titanium oxide according to claim 1, wherein the cooling is from rapid cooling to natural cooling or slow cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000002465A JP2001199725A (en) | 2000-01-11 | 2000-01-11 | Method for producing titanium oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000002465A JP2001199725A (en) | 2000-01-11 | 2000-01-11 | Method for producing titanium oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001199725A true JP2001199725A (en) | 2001-07-24 |
Family
ID=18531569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000002465A Pending JP2001199725A (en) | 2000-01-11 | 2000-01-11 | Method for producing titanium oxide |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001199725A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5452744B1 (en) * | 2013-02-26 | 2014-03-26 | 株式会社昭和 | A method for producing a surface-treated metal titanium material or titanium alloy material, and a surface treatment material. |
| JP5490303B1 (en) * | 2013-12-27 | 2014-05-14 | 株式会社昭和 | A method for producing an edible oil deterioration preventing member and an edible oil deterioration preventing member. |
| KR20220130942A (en) * | 2021-03-19 | 2022-09-27 | 주식회사 기현테크 | Deburring method of processed surface of biocompatible parts made of titanium alloy material |
-
2000
- 2000-01-11 JP JP2000002465A patent/JP2001199725A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5452744B1 (en) * | 2013-02-26 | 2014-03-26 | 株式会社昭和 | A method for producing a surface-treated metal titanium material or titanium alloy material, and a surface treatment material. |
| WO2014132874A1 (en) * | 2013-02-26 | 2014-09-04 | 株式会社昭和 | Method for producing surface-treated metal titanium material or titanium alloy material, and surface-treated material |
| KR101504569B1 (en) | 2013-02-26 | 2015-03-20 | 가부시키가이샤 쇼와 | Method for producing surface-treated metal titanium material or titanium alloy material, and surface-treated material |
| CN104781449A (en) * | 2013-02-26 | 2015-07-15 | 株式会社昭和 | Method for producing surface-treated metal titanium material or titanium alloy material, and surface-treated material |
| CN104781449B (en) * | 2013-02-26 | 2017-03-01 | 株式会社昭和 | The manufacture method of surface treated metallic titanium material or titanium alloy material and finish materials |
| US10053762B2 (en) | 2013-02-26 | 2018-08-21 | Showa Co., Ltd. | Method for producing surface-treated metal titanium material or titanium alloy material, and surface-treated material |
| JP5490303B1 (en) * | 2013-12-27 | 2014-05-14 | 株式会社昭和 | A method for producing an edible oil deterioration preventing member and an edible oil deterioration preventing member. |
| WO2015020238A3 (en) * | 2013-12-27 | 2015-04-23 | 株式会社昭和 | Method for manufacturing edible oil deterioration preventing member, and edible oil deterioration preventing member |
| KR20220130942A (en) * | 2021-03-19 | 2022-09-27 | 주식회사 기현테크 | Deburring method of processed surface of biocompatible parts made of titanium alloy material |
| KR102528200B1 (en) * | 2021-03-19 | 2023-05-03 | 주식회사 기현테크 | Deburring method of processed surface of biocompatible parts made of titanium alloy material |
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