JPH0345552A - Production of oxide superconducting sintered compact - Google Patents
Production of oxide superconducting sintered compactInfo
- Publication number
- JPH0345552A JPH0345552A JP1179723A JP17972389A JPH0345552A JP H0345552 A JPH0345552 A JP H0345552A JP 1179723 A JP1179723 A JP 1179723A JP 17972389 A JP17972389 A JP 17972389A JP H0345552 A JPH0345552 A JP H0345552A
- Authority
- JP
- Japan
- Prior art keywords
- oxide superconducting
- molded body
- molded article
- organic material
- laser
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000000843 powder Substances 0.000 claims abstract description 12
- 239000011368 organic material Substances 0.000 claims abstract description 9
- 238000000465 moulding Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 16
- 239000007787 solid Substances 0.000 claims 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract description 9
- 239000000314 lubricant Substances 0.000 abstract description 2
- 239000004014 plasticizer Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 2
- 229910009203 Y-Ba-Cu-O Inorganic materials 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- -1 flocculant Substances 0.000 abstract 1
- 239000004088 foaming agent Substances 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 239000002887 superconductor Substances 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 239000004604 Blowing Agent Substances 0.000 description 1
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229920000314 poly p-methyl styrene Polymers 0.000 description 1
- 229920001490 poly(butyl methacrylate) polymer Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
Landscapes
- Laser Beam Processing (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）技術分野
本発明は、酸化物超電導、焼結体の製造方法に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field The present invention relates to an oxide superconductor and a method for producing a sintered body.
（ロ）従来技術
従来から、酸化物超電導焼結体の製造方法としては、次
記の様な方法が提案され、実際実施されている方法もあ
るが、それぞれ欠点がある。(B) Prior Art Conventionally, the following methods have been proposed as methods for producing oxide superconducting sintered bodies, and some of them are actually in practice, but each has its own drawbacks.
即ち、ａ）酸化物超電導粉を１〜１０ｕＬ程度に粉砕し
、これを金型プレスや静水圧プレスによってペレットや
板、棒状等に成型した後、焼成して焼結体を作製する方
法や、ｂ）上記ａ）の方法において超電導粉以外にバイ
ンダーと分散剤を用いて成型性を向上させて成型体を作
製し、これを焼成して焼結体を作製する方法が提案され
ているが、始めから金型等を用いて目的とする成型体を
作製しようとする場合、即ち焼成して最終製品である焼
結体を作製する前に目的とする成型体を作製する方法で
は、成型するための型が複雑となり、壓自体の作製が極
めて難しく、かつコスト高となる。That is, a) a method of pulverizing oxide superconducting powder to about 1 to 10 μL, molding it into a pellet, plate, rod shape, etc. using a mold press or isostatic press, and then firing it to produce a sintered body; b) In the method a) above, a method has been proposed in which a binder and a dispersant are used in addition to the superconducting powder to improve moldability and a molded body is produced, and the molded body is fired to produce a sintered body. When attempting to produce the desired molded body from the beginning using a mold, etc., that is, in a method of producing the desired molded body before firing to produce the final product, the sintered body, The mold is complicated, making the bottle itself extremely difficult and expensive to manufacture.
Ｃ）またａ）、ｂ）において１作製したｒ＆型体を機械
加工し、穴をあけたり切断したりして目的とする成形体
を作製した後に焼成して焼結体を作製する方法も提案さ
れているが、この方法では焼結する前の成型体は脆いの
で、切断・研削加工時に破損してしまう虞れがある。C) We also propose a method in which the R& mold body produced in step a) and b) is machined, holes are made and cut to produce the desired molded body, and then fired to produce a sintered body. However, with this method, the molded body before sintering is brittle, so there is a risk of it being damaged during cutting and grinding.
ｄ）更に上記ａ）、ｂ）によって作製した焼結体を穿孔
や切断等の機械加工を施して目的とする焼結体を作製す
る方法も提案されているが、切断、研削等の機械加工に
長時間が必要であり、コスト高となる等の欠点がある。d) Furthermore, a method has been proposed in which the sintered body produced by the above a) and b) is subjected to machining such as drilling or cutting to produce the desired sintered body. There are drawbacks such as a long time required and high cost.
（ハ）発明の開示
本発明は、上記のような状況に鑑みて諸欠点を解消すべ
く検討した結果なされたものであり、即ち酸化物超電導
粉にバインダーや分散剤として有機材料を加えてプレス
成型することにより一次成々１体を形成した後、該−次
ｔｉ、型体をレーザーにより加工して二次成型体を形成
せしめ、その後に該二次成形体を焼成して焼結体とする
酸化物超電導焼結体の製造方法を提供するものである。(C) Disclosure of the Invention The present invention was made as a result of studies to eliminate the various drawbacks in view of the above-mentioned circumstances. Namely, the present invention was made as a result of studies to eliminate various drawbacks in view of the above-mentioned circumstances. After forming a primary molded body by molding, the secondary molded body is processed with a laser to form a secondary molded body, and then the secondary molded body is fired to form a sintered body. The present invention provides a method for producing an oxide superconducting sintered body.
Ｌ記のように、焼結する前の成型体を機械加工する場合
には大きな負荷がかかるので、該成型体は破損し易いが
、本発明にようにレーザー加工によれば無負荷であるた
め、焼結前の成型体でも破損させずに加工することがで
きるのである。As shown in item L, when machining a molded body before sintering, a large load is applied and the molded body is easily damaged, but with laser machining as in the present invention, no load is applied. , even a pre-sintered molded body can be processed without damaging it.
また、焼結後の焼結体をレーザー加工する場合には、焼
結体の熱伝導性が良いため、レーザー加工時のレーザー
熱が周囲に拡散し、切断面が溶融して凹凸状となって綺
麗に仕上げられないが、本発明法のように焼結前の成型
体をレーザー加工する場合には、ＭＪｔ、導粉どうしが
分離されているために熱伝導性が低く、しかも有機材料
が超電導粉どうしの間に存在しているためにレーザー加
工され易く、更にバインダーとなっている上記有機材料
が燃焼して完全に消失してしまうので、切除や切断加工
もし易いのである。In addition, when laser processing a sintered body after sintering, since the sintered body has good thermal conductivity, the laser heat during laser processing spreads to the surrounding area, causing the cut surface to melt and become uneven. However, when laser processing a molded body before sintering as in the method of the present invention, the thermal conductivity is low because the MJt and the guiding powder are separated, and the organic material is Since it exists between superconducting powders, it is easy to be processed by laser, and since the organic material serving as the binder burns and completely disappears, it is also easy to cut or cut it.
即ち、本発明法によれば有機材料が一次成型体作製時に
超電導粉どうしを結びつけるバインダーとして作用する
と同時に、一次成型体の熱伝導性の低下をもたらすので
、レーザー熱が拡散し難く、更にそのバインダーとして
の有機材料が燃焼して消失してしまうため、切断効果を
著しく向上させることができるのである。That is, according to the method of the present invention, the organic material acts as a binder to bind superconducting powder to each other during the production of the primary molded body, and at the same time causes a decrease in the thermal conductivity of the primary molded body, making it difficult for the laser heat to diffuse, and furthermore, the binder Since the organic material is burned and lost, the cutting effect can be significantly improved.
本発明はＹ−Ｂａ−Ｃｕ−０系超電導粉のみならず、各
種酸化物超電導粉の成葉加工に適用することができ、高
能率で高精度の加工が安価にできるのである。The present invention can be applied not only to Y-Ba-Cu-0 based superconducting powder but also to the processing of various oxide superconducting powders, and enables highly efficient and highly accurate processing at low cost.
本発明に使用されるレーザーは原子型９分子型、イオン
η！等の各種気体レーザーを始め、混入型誘電体レーザ
ーのＮｄ３＋ガラスレーザーやＮｄａ＋イツトリウム・
アルミニウム・ガーネット（ＹＡＧ）レーザー等が使用
できるのである。The laser used in the present invention has an atomic type of 9 molecules, and an ion η! In addition to various gas lasers such as Nd3+ glass lasers, which are mixed dielectric lasers, and Nda+Yttrium lasers,
An aluminum garnet (YAG) laser or the like can be used.
また、本発明に係る有機材料としては、代表的なバイン
ダーとしてアクリル系樹脂、 ＰＭＳ 、 ＰＶＡ 、
ＰＢＭＡ 、セルローズ等が有効であり、その添加埴は
酸化物超電導粉に対して０．５〜２０ｗｔ％であり、好
ましくは２〜１５ｗＬ％である。０．５ｗｔ％未満では
効果がほとんど認められず、２０ｗｔ％以上では効果が
飽和しかつコスト高となる。Further, as the organic material according to the present invention, typical binders include acrylic resin, PMS, PVA,
PBMA, cellulose, etc. are effective, and the amount added thereof is 0.5 to 20 wt%, preferably 2 to 15 wL%, based on the oxide superconducting powder. If it is less than 0.5 wt%, hardly any effect will be observed, and if it is more than 20 wt%, the effect will be saturated and the cost will be high.
Ｅ記有機材料の助剤として、トルエンやアセトン等の溶
剤を適当量併用すれば更に効果は向上する。この際、滑
剤や可塑剤、解膠剤１発泡剤、濡れ改質材等の助剤を適
宜組合せ添加することにより、成型性を更に向１；させ
ることができる。The effect can be further improved by using an appropriate amount of a solvent such as toluene or acetone as an auxiliary agent for the organic material E. At this time, moldability can be further improved by adding a suitable combination of auxiliary agents such as a lubricant, a plasticizer, a deflocculant, a blowing agent, and a wetting modifier.
次に、本発明を実施例により説明する。Next, the present invention will be explained by examples.
（ニ）実施例
実施例１
ＹＢ ａ９ Ｃｕ、 ０７−Ｘ（７）粒径−３ｐｍ（７
）微粉２００ｇに対して、有Ｒ質バインダー（「アロセ
ット７０３５」 二日本触媒化学工業■製の商品名）２
ｗｔ％をトルエン：アセトン＝１：２に配合した有機溶
媒４００ｃｃと共に添加して混合、乾燥した後充分粉砕
して、これを供試試料とした。(D) Examples Example 1 YB a9 Cu, 07-X (7) Particle size -3 pm (7
) For 200 g of fine powder, add R-containing binder (“Arocet 7035”, trade name manufactured by Nippon Shokubai Chemical Co., Ltd.) 2
wt% was added together with 400 cc of an organic solvent blended in a ratio of toluene:acetone=1:2, mixed, dried, and thoroughly ground to obtain a test sample.
該試料を用いて５ｘ厚Ｘ ３１ｎｃｈ角の板を成型し、
一次成型体とした。この時の威型圧は１ ｔｏｎ／Ｃｍ
２である。Using the sample, mold a plate of 5x thickness x 31 nch square,
It was made into a primary molded body. The intimidating pressure at this time is 1 ton/Cm
It is 2.
この一次成型体をＣＯ２ガスレーザ−３０Ｗを用い、１
％スポットに焦点を合わせて円形に切断した。Using a CO2 gas laser-30W, this primary molded body was
% spot was focused and cut into a circle.
切断面は表面部分だけ溶けてはいるが、綺麗であった。The cut surface was clean, although only the surface part was melted.
また、切断所要時間は１％当り１０秒であり、極めて短
時間で切断することができた。Further, the required cutting time was 10 seconds per 1%, and the cutting could be performed in an extremely short time.
比較例
上記実施例１と同様の供試試料で成型した５’Ｘ厚Ｘ
３１ｎｃｈ角の板を、９４０℃ＸＩＯ時間焼成して焼結
体を作製した。この焼結体を実施例１と同様にＣＯ２ガ
スレーザ−３０Ｗを用いて円形に切断しようとしたが、
１％スポットの径の周辺４〜５φ近くまで溶融したうえ
、ｌｘｖ′Ｊ断するのに約５分を要し、良好な結果は得
られなかった。Comparative example 5'X thickness
A 31 nch square plate was fired at 940°C for XIO hours to produce a sintered body. An attempt was made to cut this sintered body into a circular shape using a 30W CO2 gas laser as in Example 1, but
In addition to melting to about 4 to 5 φ around the diameter of the 1% spot, it took about 5 minutes to cut lxv'J, and good results were not obtained.
この結果から、焼結体の加工は極めて難しいことが分る
。This result shows that processing the sintered body is extremely difficult.
実施例２
実施例１で使用したＣＯ？ガスレーザー３０Ｗに代えて
ＹＡＧレーザ−１００Ｗを使用し、その他の諸条件はす
べて実施例１と同様にしてｌ１００ｐスポツトに焦点を
合わせて一吹成型体を切断した。Example 2 CO? used in Example 1? A 100 W YAG laser was used in place of the 30 W gas laser, and all other conditions were the same as in Example 1, focusing on the 1100p spot to cut the one-blow molded body.
その結果は、実施例１の場合と同様に良好な結果が得ら
れた。The results were as good as in Example 1.
（ホ）発明の効果
ヒ述したように、本発明法によれば従来極めて難しかっ
た酸化物超電導体の成型加工を極めて容易かつ短時間で
高能率・高精度で行なうことができ、しかも安価に各種
形状にレーザー加工できるのである。(E) Effects of the Invention As mentioned above, according to the method of the present invention, the molding process of oxide superconductors, which was conventionally extremely difficult, can be carried out extremely easily, in a short time, with high efficiency and precision, and at a low cost. It can be laser processed into various shapes.
なお、上記実施例ではＹ −Ｂ−ａ −Ｃｕ −０系の
酸化物超電導体の成型加工について説明したが、本発明
法が他の酸化物超電導体にも適用できることは勿論であ
る。In addition, although the above-mentioned example explained the molding process of Y-B-a-Cu-0 type oxide superconductor, it goes without saying that the method of the present invention can be applied to other oxide superconductors.
Claims (1)
より一次成型体を形成した後、該一次成型体をレーザー
加工して二次成型体を形成せしめ、該二次成型体を焼成
して焼結体とすることを特徴とする酸化物超電導焼結体
の製造方法。After forming a primary molded body by adding an organic material to oxide superconducting powder and press-molding, the primary molded body is laser-processed to form a secondary molded body, and the secondary molded body is fired. A method for producing an oxide superconducting sintered body, the method comprising forming an oxide superconducting sintered body into a solid body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1179723A JP2699201B2 (en) | 1989-07-12 | 1989-07-12 | Manufacturing method of oxide superconducting sintered body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1179723A JP2699201B2 (en) | 1989-07-12 | 1989-07-12 | Manufacturing method of oxide superconducting sintered body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0345552A true JPH0345552A (en) | 1991-02-27 |
| JP2699201B2 JP2699201B2 (en) | 1998-01-19 |
Family
ID=16070749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1179723A Expired - Fee Related JP2699201B2 (en) | 1989-07-12 | 1989-07-12 | Manufacturing method of oxide superconducting sintered body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2699201B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9302893B2 (en) | 2013-02-07 | 2016-04-05 | The Raymond Corporation | Vibration control systems and methods for industrial lift trucks |
| US9403667B2 (en) | 2011-03-18 | 2016-08-02 | The Raymond Corporation | Dynamic vibration control systems and methods for industrial lift trucks |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5964579A (en) * | 1982-10-05 | 1984-04-12 | 日産自動車株式会社 | Powder molding process |
| JPS63270348A (en) * | 1987-04-30 | 1988-11-08 | Matsushita Electric Ind Co Ltd | Manufacturing method for ceramic superconductors |
| JPS63285162A (en) * | 1987-05-15 | 1988-11-22 | Jgc Corp | Mixed powder and sintered material using said mixed powder |
| JPH01160860A (en) * | 1987-12-18 | 1989-06-23 | Toshiba Corp | Production of sintered material of oxide superconductor |
-
1989
- 1989-07-12 JP JP1179723A patent/JP2699201B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5964579A (en) * | 1982-10-05 | 1984-04-12 | 日産自動車株式会社 | Powder molding process |
| JPS63270348A (en) * | 1987-04-30 | 1988-11-08 | Matsushita Electric Ind Co Ltd | Manufacturing method for ceramic superconductors |
| JPS63285162A (en) * | 1987-05-15 | 1988-11-22 | Jgc Corp | Mixed powder and sintered material using said mixed powder |
| JPH01160860A (en) * | 1987-12-18 | 1989-06-23 | Toshiba Corp | Production of sintered material of oxide superconductor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9403667B2 (en) | 2011-03-18 | 2016-08-02 | The Raymond Corporation | Dynamic vibration control systems and methods for industrial lift trucks |
| US9302893B2 (en) | 2013-02-07 | 2016-04-05 | The Raymond Corporation | Vibration control systems and methods for industrial lift trucks |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2699201B2 (en) | 1998-01-19 |
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