JPH03120400A - Matting treatment of titanium alloy - Google Patents
Matting treatment of titanium alloyInfo
- Publication number
- JPH03120400A JPH03120400A JP1255909A JP25590989A JPH03120400A JP H03120400 A JPH03120400 A JP H03120400A JP 1255909 A JP1255909 A JP 1255909A JP 25590989 A JP25590989 A JP 25590989A JP H03120400 A JPH03120400 A JP H03120400A
- Authority
- JP
- Japan
- Prior art keywords
- product
- electrolysis
- titanium alloy
- alloy
- anode
- 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
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 18
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 17
- 239000008151 electrolyte solution Substances 0.000 claims description 6
- 239000002932 luster Substances 0.000 abstract description 8
- 229910045601 alloy Inorganic materials 0.000 abstract description 2
- 239000000956 alloy Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 230000003292 diminished effect Effects 0.000 abstract 2
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 abstract 1
- 230000001788 irregular Effects 0.000 abstract 1
- 229910001000 nickel titanium Inorganic materials 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 229910001007 Tl alloy Inorganic materials 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000003486 chemical etching Methods 0.000 description 2
- 235000019646 color tone Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- -1 and in particular Inorganic materials 0.000 description 1
- 238000007743 anodising Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/02—Etching
- C25F3/08—Etching of refractory metals
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明はチタン合金（金属間化合物も含む。）の表面処
理方法に係り、特に金属光沢を抑えた表面を容易に得る
ことのできるチタン合金の無光沢化処理方法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for surface treatment of titanium alloys (including intermetallic compounds), and in particular, titanium alloys that can easily obtain surfaces with suppressed metallic luster. The present invention relates to a matte treatment method.
［従来の技術］
近年、我国においても普及しつつある歯列矯正において
は矯正実施中の審美性が特に要求されるが、現在主とし
て用いられている形状記憶特性を有するＮｉ−Ｔｉ合金
に対しては、その超弾性効果を失わずに着色化や無光沢
化することが非常に困難であり、金属光沢を有した状態
で使用されているのが現状である。[Prior Art] In recent years, orthodontics has become popular in Japan, and aesthetics during the orthodontic treatment are particularly required. It is very difficult to color or make it matte without losing its superelastic effect, and it is currently used in a state with metallic luster.
即ち、チタン合金の着色化処理としては陽極酸化法や熱
酸化法が、−力無光沢化処理法としては化学的にエツチ
ング処理する方法が検討されているが、以下に述べるよ
うな問題がある。That is, anodic oxidation and thermal oxidation methods are being considered for coloring titanium alloys, and chemical etching methods are being considered for matte treatment methods, but they have the following problems. .
陽極酸化法は被処理物の陽極酸化により、また熱酸化法
は被処理物を高温の酸化性雰囲気中に保持することによ
り、その表面に透明な酸化皮膜を形成し、この皮膜の表
面と下地金属表面との間で生ずる多重反射により干渉色
を生ぜしめるものであり、上記の干渉色は皮膜が厚くな
るに従い、種々の色調を呈するが、干渉色は特定の波長
を強く反射するため色調のスペクトル幅が狭く、彩やか
な単色系の色調しか得られないという欠点がある。The anodic oxidation method forms a transparent oxide film on the surface of the object by anodizing the object to be treated, and the thermal oxidation method forms a transparent oxide film on the surface of the object by maintaining it in a high-temperature oxidizing atmosphere. Interference colors are produced by multiple reflections that occur with the metal surface, and the above interference colors take on a variety of color tones as the film becomes thicker. Interference colors strongly reflect specific wavelengths, so the color tone varies. The disadvantage is that the spectral width is narrow and only colorful monochromatic tones can be obtained.
さらに陽極酸化法では、酸化皮膜の密６強度が小さく皮
膜生成後に密着強度を向上させるための強化処理を必要
とし、熱酸化法では発色に長時間を要する上発色ムラを
生じ易く、さらに加熱により形状記憶特性が失われる可
能性も増大するという問題もある。Furthermore, in the anodic oxidation method, the oxide film has a low density 6 strength and requires a strengthening treatment to improve the adhesion strength after the film is formed, and in the thermal oxidation method, it takes a long time to develop the color and tends to cause uneven color development. Another problem is that the possibility of losing shape memory properties also increases.
一方、化学的エツチングによる方法は、化学的処理によ
り被処理物表面に微細な凹凸を形成し、光の乱反射によ
り金属光沢を抑えるものであるが、被処理物の種類や処
理液の種類によりその効果は大きく依存しており、チタ
ン合金に対して種々検討した結果満足する表面状態は得
られなかった。On the other hand, in the chemical etching method, fine irregularities are formed on the surface of the workpiece through chemical treatment, and the metallic luster is suppressed by diffused reflection of light. The effects are highly dependent on each other, and as a result of various studies on titanium alloys, a satisfactory surface condition could not be obtained.
［発明が解決しようとする課題］
本発明は上記の問題を解決するためになされたもので、
チタン合金の金属光沢を容易に抑えることのできる無光
沢化処理方法を提供することをその目的とする。[Problems to be solved by the invention] The present invention has been made to solve the above problems.
The object is to provide a matting treatment method that can easily suppress the metallic luster of a titanium alloy.
本発明の方法においては、素材の性質が変化せず、かつ
曲げ加工等に対して剥離し易い皮膜等を有しないため、
特に歯列矯正用の形状記憶特性を有するＮ１−Ｔｌ合金
の処理に好適する。In the method of the present invention, the properties of the material do not change and there is no film that easily peels off during bending, etc.
It is particularly suitable for processing N1-Tl alloys with shape memory properties for orthodontics.
［課題を解決するための手段］
上記目的を達成するために、本発明のチタン合金の無光
沢化処理方法は、チタン合金よりなる被処理物を電解液
中に浸漬し、前記被処理物を陽極として２．５〜５．５
Ｖの直流電解を施すものである。[Means for Solving the Problems] In order to achieve the above object, the titanium alloy matting treatment method of the present invention immerses a workpiece made of a titanium alloy in an electrolytic solution, and 2.5-5.5 as anode
It performs direct current electrolysis of V.
本発明においては、直流電解後必要に応じて電解により
生成した酸化皮膜を酸液等により除去することが行なわ
れる。In the present invention, after DC electrolysis, the oxide film generated by electrolysis is removed using an acid solution or the like, if necessary.
上記直流電解時の電圧は被処理物を陽極として印加され
るが、２．５Ｖ未満であると表面に凹凸が形成されるも
のの均一で微細な表面性状を得ることができず、また５
、５Ｖを越えると表面が平滑となり金属光沢を抑えるこ
とができないため２．５〜５．５Ｖの範囲に設定する。The voltage during the above DC electrolysis is applied with the object to be treated as an anode, but if it is less than 2.5V, unevenness will be formed on the surface but it will not be possible to obtain a uniform and fine surface texture.
If the voltage exceeds 5V, the surface becomes smooth and metallic luster cannot be suppressed, so the voltage is set in the range of 2.5 to 5.5V.
［作用］
本発明において、電解液中でチタン合金を陽極として電
解を行うとチタン合金表面よりチタンやその他の含有元
素が溶出する。この時電解時の電圧を所定範囲内に設定
するとチタン合金の表面で孔食を生じ微細でかつ均一な
凹凸を有する表面が得られ、これにより金属光沢を抑え
ることができる。[Function] In the present invention, when electrolysis is performed in an electrolytic solution using a titanium alloy as an anode, titanium and other contained elements are eluted from the surface of the titanium alloy. At this time, if the voltage during electrolysis is set within a predetermined range, pitting corrosion will occur on the surface of the titanium alloy, resulting in a surface with fine and uniform irregularities, thereby suppressing metallic luster.
（実施例） 以下本発明の一実施例について説明する。(Example) An embodiment of the present invention will be described below.
実施例１〜２
外径φ０．３５＋ｎｍ、長さ３０ｍ＋＊の旧−７１合金
線（ＴＩ−５０ａｔ％ＴＩ ＞を陽極としステンレスを
陰極として、０１１３ Ｃ００Ｉ＋ ９４％および１Ｉ
ｃ１０４ ８％の電解液中で直流電解を行った。Examples 1-2 Old -71 alloy wire with outer diameter φ0.35+nm and length 30m+* (TI-50at%TI> is used as an anode and stainless steel is used as a cathode, 0113 C00I+ 94% and 1I
Direct current electrolysis was performed in a c104 8% electrolyte.
次いで電解により生じた酸化皮膜を弗硝酸水溶液により
除去した。尚電解中の電解液の液温は３５℃に設定した
。Next, the oxide film produced by electrolysis was removed with a fluoronitric acid aqueous solution. The temperature of the electrolytic solution during electrolysis was set at 35°C.
第１表に電解条件と表面状態のＳＥＭ（走査型７ｕ子顕
微１２）による観察結果を示す。Table 1 shows the observation results of the electrolytic conditions and surface state by SEM (scanning type 7u electron microscope 12).
（以下余白）
第１表
実施例３
外径φ０．３５＋ｍ、長さ ｌ ４０ ｗｉｇのＮ１−
Ｔｌ合金線（Ｎｌ−５０ａｔ％Ｔｌ）を陽極とし旧を陰
極として、１１２ ＳＯ４６０％およびＩ［２０２Ｇ％
の電解液中で直流電解を行った。尚電解中の電解液の液
温は２０℃に設定した。(Margin below) Table 1 Example 3 Outer diameter φ0.35+m, length l 40 wig N1-
Using the Tl alloy wire (Nl-50at%Tl) as the anode and the old wire as the cathode, 112SO460% and I [202G%
DC electrolysis was performed in an electrolyte solution. The temperature of the electrolytic solution during electrolysis was set at 20°C.
第２表に電解条件とＳＥＭによる観察結果を示す。Table 2 shows the electrolysis conditions and SEM observation results.
（以下余白）
第２表
ため、チタン合金の無光沢化を達成することができ、か
つその方法も簡便である。本方法により処理されたＮ１
−Ｔｌ合金線は歯列矯正用の線材に好適する。(The following is a blank space) Table 2 Therefore, it is possible to make the titanium alloy matte, and the method is also simple. N1 treated by this method
-Tl alloy wire is suitable for orthodontic wire rods.
Claims (2)
、前記被処理物を陽極として２．５〜５．５Ｖの直流電
解を施すことを特徴とするチタン合金の無光沢化処理方
法。(1) A method for matting a titanium alloy, which comprises immersing a titanium alloy workpiece in an electrolytic solution, and subjecting the workpiece to DC electrolysis at 2.5 to 5.5V using the workpiece as an anode. .
よりなる請求項１記載のチタン合金の無光沢化処理方法
。(2) The method for matting a titanium alloy according to claim 1, wherein the object to be treated is an Nl-Ti alloy having shape memory properties.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1255909A JPH03120400A (en) | 1989-09-29 | 1989-09-29 | Matting treatment of titanium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1255909A JPH03120400A (en) | 1989-09-29 | 1989-09-29 | Matting treatment of titanium alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03120400A true JPH03120400A (en) | 1991-05-22 |
Family
ID=17285258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1255909A Pending JPH03120400A (en) | 1989-09-29 | 1989-09-29 | Matting treatment of titanium alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03120400A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102899711A (en) * | 2012-11-20 | 2013-01-30 | 重庆大学 | Electrolytic polishing solution for titanium and titanium alloys and electrolytic polishing process |
| CN111621841A (en) * | 2020-05-21 | 2020-09-04 | 南京理工大学 | TiAl single crystal EBSD sample-based electrolytic polishing solution and electrolytic method thereof |
| CN115522254A (en) * | 2021-06-25 | 2022-12-27 | 赛诺神畅医疗科技有限公司 | Electrolytic polishing solution and electrolytic polishing method suitable for nickel-titanium alloy stent |
-
1989
- 1989-09-29 JP JP1255909A patent/JPH03120400A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102899711A (en) * | 2012-11-20 | 2013-01-30 | 重庆大学 | Electrolytic polishing solution for titanium and titanium alloys and electrolytic polishing process |
| CN102899711B (en) * | 2012-11-20 | 2016-01-27 | 重庆大学 | A kind of electrolytic polishing liquid for titanium or titanium alloy and electrolytic polishing process |
| CN111621841A (en) * | 2020-05-21 | 2020-09-04 | 南京理工大学 | TiAl single crystal EBSD sample-based electrolytic polishing solution and electrolytic method thereof |
| CN111621841B (en) * | 2020-05-21 | 2022-05-10 | 南京理工大学 | TiAl single crystal EBSD sample-based electrolytic polishing solution and electrolytic method thereof |
| CN115522254A (en) * | 2021-06-25 | 2022-12-27 | 赛诺神畅医疗科技有限公司 | Electrolytic polishing solution and electrolytic polishing method suitable for nickel-titanium alloy stent |
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