JPH04193785A - Method for reforming inorganic material surface by laser beam irradiation - Google Patents
Method for reforming inorganic material surface by laser beam irradiationInfo
- Publication number
- JPH04193785A JPH04193785A JP31801990A JP31801990A JPH04193785A JP H04193785 A JPH04193785 A JP H04193785A JP 31801990 A JP31801990 A JP 31801990A JP 31801990 A JP31801990 A JP 31801990A JP H04193785 A JPH04193785 A JP H04193785A
- Authority
- JP
- Japan
- Prior art keywords
- inorganic material
- laser beam
- ceramic
- laser
- solvent
- 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.)
- Granted
Links
Landscapes
- Surface Treatment Of Glass (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は天然石材等のシリカ成分の多い無機材料の表面
改質方法に係るものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for surface modification of inorganic materials containing a large amount of silica, such as natural stone.
（従来の技術）
無機材料の表面にレーザ照射を行うと、レーザの発生熱
によって同表面が瞬間にして１．ＯＯＯ’Ｃ−２、００
０°Ｃに達し、表面溶融が起こり、深さ０．５ｎ＋＋ｎ
−２ｎｗｎ程度のセラミック層が形成される。(Prior Art) When the surface of an inorganic material is irradiated with a laser, the surface instantly changes to 1. OOO'C-2,00
0°C reached, surface melting occurred, depth 0.5n++n
A ceramic layer of about -2nwn is formed.
（発明が解決しようとする課題）
しかしながらこの場合、レーザ照射時の急激な温度上昇
によって無機材料の表面付近の水分の蒸発、及びガスの
発生によって、レーザ照射によっけ形成された無機材料
表面のセラミック層内部に無数のミクロ的な気泡が発生
する場合があり、この気泡発生に、局部的な熱膨張、収
縮による力が加わると、部分的に無機材料が破壊してポ
ツプアップする等の問題点がある。(Problem to be solved by the invention) However, in this case, due to the rapid temperature rise during laser irradiation, water near the surface of the inorganic material evaporates and gas is generated, causing the surface of the inorganic material formed by the laser irradiation to evaporate. Countless microscopic bubbles may be generated inside the ceramic layer, and when the force of local thermal expansion and contraction is applied to these bubbles, the inorganic material partially breaks down and pops up. There is.
本発明は前記従来技術の有する問題点に鑑みて提案され
たもので、その目的とする処は無機材料表面に前処理を
施して、無機材料の破壊、ホップアップを防止できるレ
ーザ照射による無機材料の表面改質方法を提供する点に
ある。The present invention has been proposed in view of the problems of the prior art, and its purpose is to pre-treat the surface of the inorganic material to prevent destruction and hop-up of the inorganic material by laser irradiation. The object of the present invention is to provide a method for surface modification.
（課題を解決するための手段）
前記の目的を達成するため、本発明に係る無機材料の表
面改質方法によれば、無機材料の表面に溶剤を含浸した
のち、同面にレーザ照射を行ない、前記無機材料の表面
を白色化したセラミック状態にならしめるものである。(Means for Solving the Problem) In order to achieve the above object, according to the method for surface modification of an inorganic material according to the present invention, the surface of the inorganic material is impregnated with a solvent, and then the same surface is irradiated with a laser. , the surface of the inorganic material is made to have a white ceramic state.
（作用）
本発明によれば無機材料の表面にレーザ照射を行なう前
に、前処理として被照射面に溶剤を含浸せしめることに
よって、レーザ照射時において照射面周囲の溶剤を燃焼
せしめ、同溶剤の燃焼熱によってレーザ照射により無機
材料表面に生じた溶融池の周辺の水分やガスを溶融直前
に除去し、かくして気泡の発生を抑制し、且つ前記溶剤
の燃焼熱によって前記無機材料に生じる局部的な熱応力
を軽減させ、無機材料の破壊やホンプアップ等の欠陥を
防止し、無機材料表面に均一な白色セラミック層を生成
せしめるものである。(Function) According to the present invention, before performing laser irradiation on the surface of an inorganic material, by impregnating the irradiated surface with a solvent as a pretreatment, the solvent around the irradiated surface is burned during laser irradiation, and the solvent is Moisture and gas around the molten pool generated on the surface of the inorganic material by laser irradiation due to combustion heat are removed immediately before melting, thereby suppressing the generation of bubbles and eliminating localized gas generated on the inorganic material due to the combustion heat of the solvent. It reduces thermal stress, prevents defects such as breakage and bump-up of the inorganic material, and produces a uniform white ceramic layer on the surface of the inorganic material.
（実施例） 次に本発明を実施例について説明する。(Example) Next, the present invention will be explained with reference to examples.
本発明の方法に使用される無機材料は特に限定されるも
のではないが、通常は大谷石、抗火石、会津石、伊豆の
青石等の如き、シリカ分の多い無機材料が使用される。The inorganic material used in the method of the present invention is not particularly limited, but inorganic materials with a high silica content, such as Oya stone, anti-fire stone, Aizu stone, Izu blue stone, etc., are usually used.
而して同無機材料の表面にレーザ照射する前に、前処理
として同材料表面にメチルアルコール、エチルアルコー
ル、アセトーン、またはこれらと同効の有機系溶剤を含
浸させる。Before the surface of the inorganic material is irradiated with laser, the surface of the material is impregnated with methyl alcohol, ethyl alcohol, acetone, or an organic solvent having the same effect as these as a pretreatment.
なお同有機系溶剤の含浸量は材料にもよるが、通常は０
．０２ｇ／ｃ＋ｆｌ−０，１ｇ／ｃ＋ｆｌ程度のスプレ
ー塗布、または表面含浸で十分である。The amount of organic solvent impregnated depends on the material, but is usually 0.
．． Spray coating or surface impregnation on the order of 0.02g/c+fl-0.1g/c+fl is sufficient.
次いで濡れた無機材料の表面が乾燥するまで数分間待ち
、しかるのち直ちにレーザ照射を行なう。Next, wait several minutes until the surface of the wet inorganic material dries, and then immediately perform laser irradiation.
本方法に用いるレーザは特に限定されないが、材料表面
温度を１ 、０００ ’Ｃ−２，０００°Ｃまで加熱で
きるキロワット級の炭酸レーザ（波長１０．６μｍ）あ
るいはＮｄ ： ＹＡＧレーザ（波長１．０６ｐｍ）が
最も適している。The laser used in this method is not particularly limited, but may be a kilowatt-class carbon dioxide laser (wavelength 10.6 μm) that can heat the material surface temperature to 1,000'C to 2,000°C or a Nd:YAG laser (wavelength 1.06pm). ) is most suitable.
第１図は無機材料に対するレーザ照射方法の概要を示し
、レーザ発振機（図示せず）からのレーザ光線ａはジン
クセレーン（ＺｎＳｅ）の凸レンズより構成された集光
レンズ１によって一旦集光されたのち、固定ミラー２及
びオシレートミラー３によって順次反射されて、Ｘ−Ｙ
テーブル４上に置かれた無機材料５の表面に照射される
。Figure 1 shows an overview of the laser irradiation method for inorganic materials, in which a laser beam a from a laser oscillator (not shown) is once focused by a condenser lens 1 composed of a convex lens of zinc serene (ZnSe). Afterwards, it is sequentially reflected by the fixed mirror 2 and the oscillating mirror 3, and the X-Y
The surface of the inorganic material 5 placed on the table 4 is irradiated.
なおレーザ照射幅は１２ｍｍ−３０ｍｍの範囲で設定さ
れるようになっている。Note that the laser irradiation width is set within a range of 12 mm to 30 mm.
レーザ照射中に、無機材料５が置かれたＸ−Ｙテーブル
４を一定速度でレーザ光線の振幅方向（図示の実施例で
はＹ方向）に対して直角方向（図示の実施例ではＸ方向
）に移動することによって、無機材料５の表面に幅１２
〜３０ｍｍの白色セラミック帯が形成される。During laser irradiation, the X-Y table 4 on which the inorganic material 5 is placed is moved at a constant speed in a direction perpendicular (in the illustrated embodiment, the X direction) to the amplitude direction of the laser beam (in the illustrated embodiment, the Y direction). By moving, a width 12 is formed on the surface of the inorganic material 5.
A ~30 mm white ceramic band is formed.
このように形成される帯状セラミック層をＹ方向に順続
して重合させることによって無機材表面全体をセラミッ
ク化する。By sequentially polymerizing the band-shaped ceramic layers thus formed in the Y direction, the entire surface of the inorganic material is made into ceramic.
なお前記したレーザ照射中に無機材料における照射位置
周辺の溶剤が静かに燃焼するのが観察された。而してこ
の溶剤の燃焼反応によって気泡の発生が抑制され、均一
なセラミック層が形成される。During the laser irradiation described above, it was observed that the solvent around the irradiation position on the inorganic material was quietly burned. This combustion reaction of the solvent suppresses the generation of bubbles and forms a uniform ceramic layer.
なお同セラミック層の厚さは、レーザ光線のエネルギー
、前記テーブル５の移動速度、集光レンズ１の焦点距離
等、レーザ照射条件を調整することによって、０．５ｍ
ｍ −２ｍｍの範囲で選定できる。The thickness of the ceramic layer can be adjusted to 0.5 m by adjusting the laser irradiation conditions such as the energy of the laser beam, the moving speed of the table 5, and the focal length of the condenser lens 1.
It can be selected within the range of m -2mm.
次に本発明の実験例を挙げる。Next, an experimental example of the present invention will be given.
長さ２５０ｍｍ、幅１２５＋ｎｍ、厚さ１３ｍｍ大谷石
０表面に、メチルアルコールをスプレーガンにより０．
０５ｇ／ｃＪ程度均一に塗布し、常温で２分放置乾燥せ
しめ、その後直ちにＩＫＷ級の炭酸ガスレーザ照射機の
Ｘ−Ｙテーブルに固定し、下記の照射条件でレーザ照射
を行い、表面全体に均一な表面白色セラミック層を形成
させた、そのセラミック層の厚さは０．７胴であった。Methyl alcohol was applied to the surface of Oya stone, which is 250 mm long, 125 nm wide, and 13 mm thick, using a spray gun.
05g/cJ uniformly, leave it to dry for 2 minutes at room temperature, then immediately fix it on the X-Y table of an IKW class carbon dioxide laser irradiation machine, and perform laser irradiation under the following irradiation conditions to uniformly cover the entire surface. A white ceramic layer was formed on the surface, and the thickness of the ceramic layer was 0.7 mm.
レーザ出カニ ＩＫＷ照射幅：
１２ｍｍ照射ピッチ：
１０ｎｎ＋テ一ブル移動速度： ２５
０ｃｍ／ｍｉｎレーザビーム径：０．６肛
ビームオシレーションｍ波数： １００Ｈｚ以上のよう
に大谷石表面にメチルアルコールを塗布した後にレーザ
照射を行った場合のセラミック層表面の顕微鏡写真と、
メチルアルコール塗布を行わないでそのままレーザ照射
した場合の顕微鏡写真とを観察したところ、大谷石の表
面層は前者で気泡が少ない白色セラミック層であるのに
対し、後者ではミクロ気泡の多い透明な層になっており
、照射前のメチルアルコール塗布の気泡発生抑止効果が
顕著であることが判った。Laser output IKW irradiation width:
12mm irradiation pitch:
10nn+table movement speed: 25
0 cm/min Laser beam diameter: 0.6 Anal beam oscillation m Wave number: 100 Hz or more A micrograph of the ceramic layer surface when laser irradiation is performed after applying methyl alcohol to the Oya stone surface,
When we observed the micrographs of the case of laser irradiation without applying methyl alcohol, we found that the surface layer of Oya stone is a white ceramic layer with few bubbles in the former, while the surface layer of Oya stone is a transparent layer with many microbubbles in the latter. It was found that applying methyl alcohol before irradiation has a remarkable effect of inhibiting bubble generation.
（発明の効果）
本発明の方法によれば前記したように、予め溶剤を含浸
した無機材料表面にレーザ光線を照射することによって
、無機材料の破壊、ホップアップを起こすことなく、美
観を呈し、しかも耐久性の高い表面白色セラミック層を
得ることができる。(Effects of the Invention) As described above, according to the method of the present invention, by irradiating the surface of an inorganic material impregnated with a solvent in advance with a laser beam, a beautiful appearance can be achieved without causing destruction or hop-up of the inorganic material. Moreover, a highly durable ceramic layer with a white surface can be obtained.
また同セラミック層の深さを必要に応じてレーザ照射エ
ネルギー等の照射条件を調節することによって、０．５
ＩｎＩｎ−２ｒｎｍの範囲で任意に変化させることがで
きるものであり、本発明の方法によって得られる表面白
色セラミック化製品は無機系建設資材として好適である
。In addition, the depth of the ceramic layer can be adjusted to 0.5 by adjusting the irradiation conditions such as laser irradiation energy as necessary.
It can be arbitrarily changed within the range of InIn-2rnm, and the ceramicized product with a white surface obtained by the method of the present invention is suitable as an inorganic construction material.
第１図は本発明に係るレーザ照射による無機材料の表面
改質方法の一実施例の実施状況を示す正面図である。
１・・・集光レンズ、 ２・・・固定ミラー、３
・・・オシレートミラー、４・・・Ｘ−Ｙテーブル、５
・・・無機材料、 ａ・・・レーザ光線。FIG. 1 is a front view showing an embodiment of the method for surface modification of an inorganic material by laser irradiation according to the present invention. 1... Condenser lens, 2... Fixed mirror, 3
...Oscillating mirror, 4...X-Y table, 5
...Inorganic material, a...Laser beam.
Claims (1)
射を行ない、前記無機材料の表面を白色化したセラミッ
ク状態にならしめることを特徴とするレーザ照射による
無機材料の表面改質方法。A method for surface modification of an inorganic material by laser irradiation, characterized in that the surface of the inorganic material is impregnated with a solvent and then the same surface is irradiated with a laser to make the surface of the inorganic material into a white ceramic state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31801990A JP3165965B2 (en) | 1990-11-26 | 1990-11-26 | Surface modification method of inorganic material by laser irradiation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31801990A JP3165965B2 (en) | 1990-11-26 | 1990-11-26 | Surface modification method of inorganic material by laser irradiation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04193785A true JPH04193785A (en) | 1992-07-13 |
| JP3165965B2 JP3165965B2 (en) | 2001-05-14 |
Family
ID=18094588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31801990A Expired - Fee Related JP3165965B2 (en) | 1990-11-26 | 1990-11-26 | Surface modification method of inorganic material by laser irradiation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3165965B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996012684A1 (en) * | 1994-10-25 | 1996-05-02 | Dos Santos Simoes Fernando Ant | Method for colouring pieces of rock by laser rays |
| CN1046691C (en) * | 1992-06-29 | 1999-11-24 | 菲尔南多·安东尼奥·多斯-桑托斯-西蒙斯 | Method of coloring stones with laser beams |
| JP2009227472A (en) * | 2008-03-19 | 2009-10-08 | Taisei Corp | Method for surface-treating marble, and marble for floor |
-
1990
- 1990-11-26 JP JP31801990A patent/JP3165965B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1046691C (en) * | 1992-06-29 | 1999-11-24 | 菲尔南多·安东尼奥·多斯-桑托斯-西蒙斯 | Method of coloring stones with laser beams |
| WO1996012684A1 (en) * | 1994-10-25 | 1996-05-02 | Dos Santos Simoes Fernando Ant | Method for colouring pieces of rock by laser rays |
| JP2009227472A (en) * | 2008-03-19 | 2009-10-08 | Taisei Corp | Method for surface-treating marble, and marble for floor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3165965B2 (en) | 2001-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3527198A (en) | Method and apparatus for working diamonds by means of laser light beam | |
| Chwa et al. | Microstructures of ZrO2-8wt.% Y2O3 coatings prepared by a plasma laser hybrid spraying technique | |
| DK538987A (en) | PROCEDURE FOR SURFACE TREATMENT OF BODIES OF CERAMIC MATERIAL USING A LASER | |
| CN110586579A (en) | Device and method for laser cleaning and surface modification composite processing of carbon fiber composite material | |
| JP2009527359A5 (en) | ||
| Ushmaev et al. | Thermally sprayed coatings resistant to environmental degradation: Columnar-like coatings through laser ablation and surface melting approach | |
| JP3165965B2 (en) | Surface modification method of inorganic material by laser irradiation | |
| Marcu et al. | Pulsed laser deposition of YBCO thin films in a shadow mask configuration | |
| JPS55150238A (en) | Method of irradiating laser beam | |
| JPH04504986A (en) | Method and apparatus for treating granite surfaces using high temperature plasma jets | |
| US6037015A (en) | Method for coloring pieces of rocks by laser rays | |
| JP2008531845A (en) | Pulsed laser deposition method | |
| JP2000093885A (en) | Drying of coating film | |
| KR20060082800A (en) | Method and apparatus for drying lacquer coating | |
| DE19646331A1 (en) | Localised laser plastic deformation process | |
| Lasagni et al. | Direct patterning of polystyrene–polymethyl methacrylate copolymer by means of laser interference lithography using UV laser irradiation | |
| EP1280654A1 (en) | Method for applying a layer containing at least polymeric material | |
| Wu et al. | Preparation of molybdenum nitrides by laser-promoted nitridation reaction | |
| WO2023052549A2 (en) | Cutting a substrate or preparing a substrate for cleaving | |
| JPH11123577A (en) | Laser machining method for brittle material | |
| Haller et al. | Experimental study of the effect of a laser beam on the morphology of wood surfaces | |
| JPH0231863A (en) | Method for applying and maturating coating material | |
| JPS54123150A (en) | Surface treatment of metal | |
| Asshauer et al. | Holmium laser ablation of cartilage: effects of cavitation bubbles | |
| JPH11100680A5 (en) | Processing method and apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080309 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090309 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090309 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100309 Year of fee payment: 9 |
|
| LAPS | Cancellation because of no payment of annual fees |