JPS63166954A - Method for forming ceramic member - Google Patents
Method for forming ceramic memberInfo
- Publication number
- JPS63166954A JPS63166954A JP30905386A JP30905386A JPS63166954A JP S63166954 A JPS63166954 A JP S63166954A JP 30905386 A JP30905386 A JP 30905386A JP 30905386 A JP30905386 A JP 30905386A JP S63166954 A JPS63166954 A JP S63166954A
- Authority
- JP
- Japan
- Prior art keywords
- base material
- film
- ceramic
- thermal spraying
- ceramic member
- 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
- 239000000919 ceramic Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims description 19
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000007751 thermal spraying Methods 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 3
- 238000005507 spraying Methods 0.000 claims abstract description 3
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 3
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 3
- 229910052735 hafnium Inorganic materials 0.000 claims abstract 2
- 239000003870 refractory metal Substances 0.000 claims description 6
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 abstract description 3
- 230000001590 oxidative effect Effects 0.000 abstract description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 229910052760 oxygen Inorganic materials 0.000 abstract description 2
- 239000001301 oxygen Substances 0.000 abstract description 2
- 230000009970 fire resistant effect Effects 0.000 abstract 2
- 230000003647 oxidation Effects 0.000 abstract 2
- 238000007254 oxidation reaction Methods 0.000 abstract 2
- 238000000465 moulding Methods 0.000 description 5
- 238000005245 sintering Methods 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/18—After-treatment
- C23C4/185—Separation of the coating from the substrate
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
Description
【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） この発明は、セラミックス部材の成形技術に関する。[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a technology for molding ceramic members.
（従来の技術）
セラミックスはほとんどの場合、ぜい性な材料であり、
鍛造など塑性変形を利用した加工は不可能である。現在
構造用のセラミックス部材は、ほとんど焼結法を用いて
作られている。これは、さまざまな方法により製品形状
に成形した後焼結を行ない、仕上げ加工を施して製品と
する。このようなプロセスにはいくつかの問題点がある
。ひとつは高融点のセラミックスを焼結するため、高温
を必要とし、そのためコストが高くなることである。ま
た複雑な形状の部材を作ろうとする場合、焼結後に大幅
な切削加工を行なわねばならず、これも高コストとなる
。これはセラミックスは一般に硬度が高くもろいため、
ダイヤモンド研摩などの方法に依らねば加工ができない
からである。(Conventional technology) Ceramics are mostly brittle materials;
Processing using plastic deformation such as forging is impossible. Currently, most structural ceramic members are made using the sintering method. It is formed into a product shape using various methods, then sintered and finished. There are several problems with such a process. One is that sintering ceramics with a high melting point requires high temperatures, which increases costs. Furthermore, if a member with a complicated shape is to be manufactured, extensive cutting must be performed after sintering, which also results in high costs. This is because ceramics are generally hard and brittle.
This is because processing cannot be performed without using methods such as diamond polishing.
（問題点を解決するための手段）
すなわち本発明のセラミックス部材成形方法ｇｔ、両射
方法を用いたセラミック部材の成形方法に８いて、耐火
金属よりなる金属層で表面が被覆さｔ′ｔ。(Means for Solving the Problems) That is, in the ceramic member molding method gt of the present invention and the ceramic member molding method using a bi-injection method, the surface is coated with a metal layer made of a refractory metal.
た所定の形状の溶射の基材上にセラミックス材料の溶射
を行なう第１の工程と、前記第１の工程の後大気中で加
熱して前記金属層を酸化する第２の工程と、前記第２の
工程の後、前言己基材よりセラミックスの成形体を分離
する第３の工程とを具えたことを特徴とする。a first step of thermally spraying a ceramic material onto a thermal spraying base material having a predetermined shape; a second step of oxidizing the metal layer by heating in the atmosphere after the first step; After step 2, the present invention is characterized by comprising a third step of separating the ceramic molded body from the base material.
本発明の工程の具体的な一例として、円筒体を成形する
場合を以下に第１図を用いて説明する。As a specific example of the process of the present invention, the case of molding a cylindrical body will be described below with reference to FIG.
（１）形成しようとする形状に対応した表面形状を成す
溶射の基材１１を用意する。この基材は、後のプロセス
を考えると金属製であってたとえば軟鋼製等であること
が好ましい。（第１図（ａ））（２）次に該基材１１の
表面上に、Ｗ、Ｍｏ、Ｔａ。(1) A thermal spray base material 11 having a surface shape corresponding to the shape to be formed is prepared. Considering the subsequent process, this base material is preferably made of metal, such as mild steel. (FIG. 1(a)) (2) Next, on the surface of the base material 11, W, Mo, and Ta are applied.
Ｈｆ等の耐火金属よりなる金属皮膜１４を形成する。こ
こでは溶射装置１２を用いているが、可能であれば他の
方法でももちろんかまわない。この時溶射を施工する際
、該金属皮膜が酸化して、密着性や強度を失わぬよう冷
却装置１３を用いることは有効である。（第１図（ｂ）
）
（３）金属層の形成が終了した後、セラミックスの溶射
を、所期の淳さのセラミックス層１５が形成するまで行
なう。A metal film 14 made of a refractory metal such as Hf is formed. Although the thermal spraying device 12 is used here, other methods may of course be used if possible. When performing thermal spraying at this time, it is effective to use the cooling device 13 to prevent the metal coating from oxidizing and losing its adhesion and strength. (Figure 1(b)
(3) After the formation of the metal layer is completed, thermal spraying of ceramics is carried out until the ceramic layer 15 of the desired thickness is formed.
（４）このセラミックス層１５を形成した後、大気中な
どの酸素を含む雰囲気中において、加熱装置１６により
５００℃以上の温度に加熱する。この工程により金属皮
膜１４は著しく酸化する。（第１図（Ｃ））
（５）付着力が小さくなった基材１１とセラミックス層
１５を分離する。（第１図（ｄ））（６）所期のセラミ
ックスの成形体を得る。(4) After forming this ceramic layer 15, it is heated to a temperature of 500° C. or higher using a heating device 16 in an atmosphere containing oxygen such as the atmosphere. This process significantly oxidizes the metal film 14. (FIG. 1(C)) (5) Separate the base material 11 and the ceramic layer 15 whose adhesion has become weaker. (Figure 1(d)) (6) Obtain the desired ceramic molded body.
以上の方法により、焼結などの工程を経ずに成形体が得
られる。必要に応じて成形の後、仕上げ加工を行なう。By the above method, a molded body can be obtained without going through steps such as sintering. After molding, finish processing is performed as necessary.
（第１図（ｅ））
（作用）
本願発明は、基材の表面上にＷ等の耐火金属よりなる皮
膜を形成することで、密着性良くセラミックスの部材を
形成することができ、さらに容易にその基材からセラミ
ックスの部材を分離することができる。これはＷ等が例
えば５００℃程度で大気中で加熱されると、急激に酸化
して粉末状となり、密着性や強度を失う性質を用いたも
のである０（実施例）
第１の実施例
内径４０ｍ、肉厚２ｍ＋、長ｉｉｋ３００ｍのＺｒＯ，
−８ａｔｆ６Ｙｔ Ｏｓ 裏門筒体を以下のようにして
成形した。(Fig. 1(e)) (Function) The present invention can form a ceramic member with good adhesion by forming a film made of a refractory metal such as W on the surface of a base material, and it is even easier to form a ceramic member. The ceramic member can be separated from the base material. This is based on the property that when W or the like is heated in the atmosphere at about 500°C, it rapidly oxidizes and becomes powdery, losing adhesion and strength.0 (Example) First Example ZrO with inner diameter 40m, wall thickness 2m+, length 300m,
-8atf6Yt Os The back gate cylinder body was molded as follows.
まず、外径３９．５１１１１−、肉厚３ Ｉｌｌ 、厚
さ３５０龍の円筒のｓｔｒｓａｏ４ｇの管を用意した。First, a cylindrical tube with an outer diameter of 39.51111 mm, a wall thickness of 3 Ill, and a thickness of 350 mm and weighing 4 g was prepared.
そして溶射に先立ってアルミナ粉末によるサンドブラス
ト処理を行なった。次いでこの円筒を支持具に水平に固
定して回転させながら、かつ水平方向に移動してＷの溶
射を行なった。またこの時、同時に高圧空気により溶射
部の冷却を行なった。そして、約２００μｍの厚さのＷ
皮膜を形成した。次いでＺｒＯ２−ｓ％Ｙ、０．の溶射
を行ない、２龍の溶射層を形成した。Prior to thermal spraying, sandblasting with alumina powder was performed. Next, this cylinder was horizontally fixed to a support, rotated, and moved horizontally to perform thermal spraying of W. At this time, the sprayed area was simultaneously cooled with high-pressure air. Then, about 200 μm thick W
A film was formed. Then ZrO2-s%Y, 0. Thermal spraying was carried out to form two thermal sprayed layers.
これらの溶射条件を以下の第１表に示す。These thermal spray conditions are shown in Table 1 below.
第１表
さらに、このＺｒＯ，−８％ＹｔＯ，の溶射層を形成し
た後、６００℃の電気炉中に７時間保持した。その結果
Ｗが酸化して基材からセラミックス層を容易に分離、す
ることができた。こうして形成したＺ ｒｏ。Table 1 Furthermore, after forming this sprayed layer of ZrO and -8% YtO, it was held in an electric furnace at 600°C for 7 hours. As a result, W was oxidized and the ceramic layer could be easily separated from the base material. Thus formed Z ro.
８ Ｔｏ Ｙｔ Ｏｓ円筒体にはクラックなどは観察さ
れなかった。No cracks were observed in the 8 To Yt Os cylinder.
第２の実施例
６０＃Ｘ６０ｍの中ぐりるつぼ形状の軟鋼の基材を用意
した。第１の実施例と同様にして、Ｗおよびアルミナ層
をそれぞれ２００μｍ、２關の厚さで溶射により形成し
た。溶射後２００℃の電気炉中に１時間保持した。基板
とアルミナ溶射層は、はとんど手を加えずに容易に分離
することができた。Second Example A mild steel base material in the shape of a bored crucible of 60# x 60m was prepared. In the same manner as in the first example, W and alumina layers were each formed by thermal spraying to a thickness of 200 μm and 2 inches. After thermal spraying, it was kept in an electric furnace at 200°C for 1 hour. The substrate and the alumina sprayed layer could be easily separated with little modification.
本発明のセラミックス部材形成方法によれば、形成した
セラミックス部材を基材から容易に分離することが可能
となり、その工業的価値は犬である。According to the ceramic member forming method of the present invention, it becomes possible to easily separate the formed ceramic member from the base material, and its industrial value is enormous.
第１図（ａ） 、 （ｂ） 、 （Ｃ） 、 （ｄ）
、 （ｅ） 、は本発明の製造方法の工程の一例を示し
た模擬図である。
１１・・・基材、１２・・・溶射装置、１３・・・冷却
装置、１４・・・金属皮膜、１５・・・セラミックス層
、１６・・・加熱装置。Figure 1 (a), (b), (C), (d)
, (e) are schematic diagrams showing an example of the steps of the manufacturing method of the present invention. DESCRIPTION OF SYMBOLS 11... Base material, 12... Thermal spraying device, 13... Cooling device, 14... Metal film, 15... Ceramic layer, 16... Heating device.
Claims (3)
いて、耐火金属よりなる金属層で表面が被覆された所定
の形状の溶射の基材上にセラミックス材料の溶射を行な
う第１の工程と、前記第１の工程の後大気中で加熱して
前記金属層を酸化する第２の工程と、前記第２の工程の
後、前記基材よりセラミックスの成形体を分離する第３
の工程とを具えたことを特徴とするセラミックス部材成
形方法。(1) In a method of forming a ceramic member using a thermal spraying method, a first step of thermally spraying a ceramic material onto a thermally sprayed base material of a predetermined shape whose surface is coated with a metal layer made of a refractory metal; a second step of heating in the atmosphere to oxidize the metal layer after the first step; and a third step of separating the ceramic molded body from the base material after the second step.
A ceramic member forming method characterized by comprising the steps of:
ばれた少なくとも１種よりなることを特徴とする特許請
求の範囲第１項記載のセラミックス部材成形方法。(2) The method for forming a ceramic member according to claim 1, wherein the refractory metal is made of at least one selected from W, Mo, Ta, and Hf.
請求の範囲第２項に記載のセラミックス部材成形方法。(3) The method for forming a ceramic member according to claim 2, characterized in that W is used as the refractory metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30905386A JPS63166954A (en) | 1986-12-27 | 1986-12-27 | Method for forming ceramic member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30905386A JPS63166954A (en) | 1986-12-27 | 1986-12-27 | Method for forming ceramic member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63166954A true JPS63166954A (en) | 1988-07-11 |
Family
ID=17988305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30905386A Pending JPS63166954A (en) | 1986-12-27 | 1986-12-27 | Method for forming ceramic member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63166954A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02156060A (en) * | 1988-12-07 | 1990-06-15 | Babcock Hitachi Kk | Surface treatment of metallic material |
| FR2663872A1 (en) * | 1990-06-29 | 1992-01-03 | Gen Electric | MANUFACTURE OF TUBES USING A REUSABLE CHUCK. |
| JP2000516561A (en) * | 1996-11-01 | 2000-12-12 | テトラ ラバル ホールデイングス エ フイナンス ソシエテ アノニム | Flip cap closure integrally molded |
| JP2006151491A (en) * | 2004-11-30 | 2006-06-15 | Yoshino Kogyosho Co Ltd | Cap with lid |
-
1986
- 1986-12-27 JP JP30905386A patent/JPS63166954A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02156060A (en) * | 1988-12-07 | 1990-06-15 | Babcock Hitachi Kk | Surface treatment of metallic material |
| FR2663872A1 (en) * | 1990-06-29 | 1992-01-03 | Gen Electric | MANUFACTURE OF TUBES USING A REUSABLE CHUCK. |
| JP2000516561A (en) * | 1996-11-01 | 2000-12-12 | テトラ ラバル ホールデイングス エ フイナンス ソシエテ アノニム | Flip cap closure integrally molded |
| JP2006151491A (en) * | 2004-11-30 | 2006-06-15 | Yoshino Kogyosho Co Ltd | Cap with lid |
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