JPH0274574A - ろう接続方法 - Google Patents

ろう接続方法

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Publication number
JPH0274574A
JPH0274574A JP1192469A JP19246989A JPH0274574A JP H0274574 A JPH0274574 A JP H0274574A JP 1192469 A JP1192469 A JP 1192469A JP 19246989 A JP19246989 A JP 19246989A JP H0274574 A JPH0274574 A JP H0274574A
Authority
JP
Japan
Prior art keywords
graphite
brazing
pyrolytic graphite
pyrolytic
reinforced
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
Application number
JP1192469A
Other languages
English (en)
Inventor
Guenter Kneringer
ギユンター、クネリンガー
Nikolaus Reheis
ニコラウス、レハイス
Walter Thalmann
ワルター、タールマン
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metallwerk Plansee GmbH
Original Assignee
Metallwerk Plansee GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Metallwerk Plansee GmbH filed Critical Metallwerk Plansee GmbH
Publication of JPH0274574A publication Critical patent/JPH0274574A/ja
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/001—Interlayers, transition pieces for metallurgical bonding of workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
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    • C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
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    • C04B37/023—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used
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  • Chemical & Material Sciences (AREA)
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Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、熱分解グラファイトからなる部材と金属部材
とをろうで接続する方法に関する。
〔従来の技術〕
グラファイトは高い耐熱性、良好な熱伝導性及び粉末化
率が少ないなどの特性から、特に断熱材として優れてい
る。またグラファイトは極く僅かな機械的強度及び僅少
な延性を有するに過ぎないことから、特殊な用途に対す
るあらゆる要件に適応させるためには金属との複合材料
として特殊な使用分野にのみ供される。
この目的で、多結晶質グラファイトを例えば銅、インコ
ネル、モリブデン又はＴＺＭのようなモリブデン合金な
どの適当な金属材料とろう付けすることは公知である。
この場合適当なろうとしては例えばＡｇ５Ｃｕ、Ｎｉ、
Ｐｄ、Ｔｉ、Ｚｒ、Ｃｒ元素と銅及びチタン成分との合
金が挙げられる。
ろう付けは真空中でそれぞれろうの組成に応じて８５０
℃〜１９００℃の温度で行う、この種の複合材料は例え
ば核融合炉での“第１壁”の構造部材又はダイバータ−
（Ｄｉｖｅｒｔｏｒ）及びリミッタ−（ＬｉＩｌｔ　ｔ
ｅｒ）の製造に際してを用であることが実証されている
。
耐熱性、熱伝導性及び低粉末化率に関して多結晶質グラ
ファイトに比べて遥かに優れた特性を存するグラファイ
ト材料はいわゆる熱分解グラファイトである。
熱分解グラファイトは気相から析出させることにより製
造される。その際原子層又は結晶層が配向する。熱分解
グラファイトのこのような成層は等方性特性を有する多
結晶質グラファイトとは異なる異方性特性をもたらす、
焼きなまし又は加圧下における焼きなましのような特殊
な後処理法により個々の特性において僅かな差異を有す
る種々の品質を得ることができる。
従って熱分解グラファイトは多結晶質グラファイトに比
べて著しく改良された熱伝導性をその層に対して平行方
向に有する。同時にこの方向での機械的強度は極めて高
くまた熱膨張率は僅かである。
これに対して成層に対して垂直な方向では熱伝導性及び
機械的強度は極く僅かであり、これに反して熱膨張率は
極めて高い。
これらの特殊な性質により熱分解グラファイトと、一般
に等方性特性を有する金属とをろう付けすることは困難
である。
多結晶質グラファイトと金属とのろう付けで有効な方法
は、熱分解グラファイトと金属とを十分に接続するのに
は適していない、特にこのろう付は法を用いた場合、熱
分解グラファイトには成層に対して平行方向並びに垂直
方向にも拡がる許容し得ない亀裂が生じる。
〔発明が解決しようとする課題］ 従って本発明の課題は、得られたろう接続がすべての熟
的及び機械的要件を満たしまた熱分解グラファイトに亀
裂を生じないようにした、熱分解グラファイトと金属と
をろう接続する方法を徒供することにある。
〔課題を解決するための手段〕
この課題は本発明によれば、熱分解グラファイトからな
る接続すべき部材と金属とを直接にではなく、炭素繊維
補強グラファイトからなる部材を中間に配置して互いに
ろう付けし、その際熱分解グラファイトと炭素繊維補強
グラファイトとを、熱分解グラファイトの層が炭素繊維
補強グラフディトの炭素繊維の主配向面に対してほぼ平
行になるように互いに配置することによって解決される
。
〔作用効果〕
炭素繊維補強グラファイトでは、そのグラファイト繊維
は通常側々の層内に不規則に存在し、また各層は上下に
ほぼ層を成して配置されており、その結果極く僅かに相
互結合されているにすぎない、この繊維間に多くの公知
方法の１つにより炭素を導入し、繊維と固定する。この
種の材料は他の多くのグラファイト材料に比べて高い熱
伝導性、高い機械的強度及び良好な耐真空性を有する。
炭素繊維補強グラファイトは熱分解グラファイトと同様
に異方性特性を存する物質であり、グラファイト中の炭
素繊維を一定に配向することにより特殊な特性に関して
優先方向を得ることができる８熱分解グラファイト及び
炭素繊維補強グラファイトを本発明におけるように配列
した場合、良好な熱伝導性及び同時にまた僅かな熱膨張
率に関して両物質の優先方向を同調させることができる
。
炭素繊維補強グラファイトからなる構成部材の厚みは、
複合部材内の温度勾配に起因する機械的応力が炭素繊維
補強グラファイトに亀裂をもたらさない程度にする必要
がある。必要な厚みはろう付は面の大きさに関係する。
〔実施態様〕
特に有利な方法ではろう付けすべき部材を、それぞれ１
１７０重量％、銅２７重量％及びチタ重量重景％の合金
からなるろう箔を中間に配置して互いに重ね合わせ、真
空下に約８５０℃の温度で互いにろう付けする。
〔実施例〕
本発明を１実施例に基づき以下に詳述する。
ろう付は試料を製造するために、寸法７５×５０×５腫
の熱分解グラファイトからなる３つの部材をそれぞれ０
．２５　ｍの間隔で炭素繊維補強グラファイトからなる
部材を中間に配置して寸法１５Ｘ５０Ｘ１５ｍのＴＺＭ
からなる部材と互いにろう付けした。その際熱分解グラ
ファイトからなる構造部材を、ＴＺＭからなる構造部材
の熱伝導方向が可能な限り大きくなるように、すなわち
その成層がろう付は面に対して垂直方向に生しるように
配置する。炭素繊維補強グラファイトとしてはカルボー
ネ・ロレイン（Ｃａｒｂｏｎｅ　Ｌｏｒｒａｉｎｅ）社
の［ランダムリー・デイストリビューテッド・クォリテ
ィ（ｒａｎｄｏｍｌｙ　ｄｉｓｔｒｉｂｕｔｅｄ　ｑｕ
ａｌｉｔｙ）　　と呼ばれる特殊な品種を使用した。特
に存効であるこの品種ではまず特別に配向することなく
配置されている短い炭素繊維をプレス加工し、ＣＶＤ法
（ｃｈｅｍｉｃａｌ　ｖａｐｏｕｒ　ｄｅｐｏｓｉｔｉ
ｏｎ）により純粋な炭素を含浸させる。この炭素繊維の
プレス加工により繊維に特定の配向がもたらされ、その
結果炭素繊維の主配向面はこの特殊な炭素繊維補強グラ
ファイトではプレス方向に対して垂直になる。
ろう付けのためＴＺＭからなる部材にＡｇ７０重量％、
Ｃｕ２７重量％及びＴｉ３重景重量組成の厚み０．１閣
のろう箔をかぶせた。その上に厚さ１０＋ｎの“ランダ
ムリー・デイストリビューテンド・クォリティ°゛品種
の炭素繊維補強グラファイトからなる部材を、炭素繊維
の主配向面が熱分解グラファイトからなる部材の成層に
対して平行になるようにかぶせた。更にその上にＡｇ７
０重量％、Ｃｕ２７重景％重量Ｔｉ３重量％の組成の厚
み０．１　ｖｍのろう箔をかぶせた。最後に熱分解グラ
ファイトからなる部材をかぶせた。この配列物を高真空
炉に装入した。炉を１０−’ｍバールの真空にし、引続
き８６０　’Ｃで３０分間加熱した。５分間この温度を
保持した後、この炉を真空下に２時間冷却した。
試料は申し分のないろう接続を示し、グラファイト中の
亀裂は走査電子顕微鏡でも認められなかった。
更に評価するため試料を１０−１〜１０弓パスカルの真
空中で連続する１０サイクルで３分以内で２００℃から
７００℃にほぼ均一に加熱し、更に１７分以内に再び２
００℃に冷却した。
その後この試料を新たに走査電子顕微鏡で検査した。ろ
う接続自体にもまた境を接する材料範囲にもいかなる暇
疵又は亀裂は発見できなかった。

Claims (1)

  1. 【特許請求の範囲】 １）熱分解グラファイトからなる部材と金属部材とをろ
    うで接続する方法において、両部材を直接にではなく、
    炭素繊維補強グラファイトからなる部材を中間に配置し
    て互いにろう付けし、その際熱分解グラファイトと炭素
    繊維補強グラファイトとを、熱分解グラファイトの層が
    炭素繊維補強グラファイトの炭素繊維の主配向面に対し
    てほぼ平行になるように互いに配置することを特徴とす
    るろう接続方法。 ２）ろう付けすべき各部材をそれぞれ、銀７０重量％、
    銅２７重量％及びチタン３重量％の合金からなるろう箔
    を中間に配置して互いに重ね合わせ、真空下に約８５０
    ℃の温度でろう付けすることを特徴とする請求項１記載
    の方法。
JP1192469A 1988-08-01 1989-07-25 ろう接続方法 Pending JPH0274574A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0193788A AT389832B (de) 1988-08-01 1988-08-01 Loetverbindung
AT1937/88 1988-08-01

Publications (1)

Publication Number Publication Date
JPH0274574A true JPH0274574A (ja) 1990-03-14

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ID=3524252

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Country Link
US (1) US4990402A (ja)
EP (1) EP0353820B1 (ja)
JP (1) JPH0274574A (ja)
AT (1) AT389832B (ja)
DE (1) DE58900451D1 (ja)

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JP2012521954A (ja) * 2009-03-28 2012-09-20 エスゲーエル カーボン ソシエタス ヨーロピア グラファイトとキャリア金属の接合部の製造法、並びに複合部材

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JP2006326294A (ja) * 2005-05-25 2006-12-07 General Electric Co <Ge> 超伝導マグネットを熱シールドするための装置
JP2012521954A (ja) * 2009-03-28 2012-09-20 エスゲーエル カーボン ソシエタス ヨーロピア グラファイトとキャリア金属の接合部の製造法、並びに複合部材

Also Published As

Publication number Publication date
EP0353820A1 (de) 1990-02-07
US4990402A (en) 1991-02-05
EP0353820B1 (de) 1991-11-13
DE58900451D1 (de) 1991-12-19
ATA193788A (de) 1989-07-15
AT389832B (de) 1990-02-12

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