JPH04227688A - セラミック表面用の乾性潤滑剤及び潤滑方法 - Google Patents

セラミック表面用の乾性潤滑剤及び潤滑方法

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Publication number
JPH04227688A
JPH04227688A JP3103632A JP10363291A JPH04227688A JP H04227688 A JPH04227688 A JP H04227688A JP 3103632 A JP3103632 A JP 3103632A JP 10363291 A JP10363291 A JP 10363291A JP H04227688 A JPH04227688 A JP H04227688A
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JP
Japan
Prior art keywords
fluoride
lubricant
rare earth
ceramic
binder
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
JP3103632A
Other languages
English (en)
Inventor
Olivier Azema
オリビエ・アズマ
Maurice Godet
モーリス・ゴデ
Francis Platon
フランシス・プラトン
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.)
Rhodia Chimie SAS
Original Assignee
Rhone Poulenc Chimie SA
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Filing date
Publication date
Application filed by Rhone Poulenc Chimie SA filed Critical Rhone Poulenc Chimie SA
Publication of JPH04227688A publication Critical patent/JPH04227688A/ja
Pending legal-status Critical Current

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    • C10M2229/054—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing phosphorus
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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】
【０００１】
【産業上の利用分野】本発明は、セラミック／セラミッ
ク及び金属／セラミックの摩擦つがい用の乾性潤滑剤並
びに潤滑方法に関する。
【０００２】
【従来の技術及び発明が解決しようとする課題】可動部
品の潤滑は、一般に、粒子を充填し得るまたは充填し得
ないオイルまたはグリースにより確保される。しかしな
がら、これらの潤滑剤の使用は使用温度によって制限さ
れる。
【０００３】従って、高温の用途において、可動部品の
潤滑は、一般に、グラファイト、弗化カルシウムまたは
硫化モリブデンのような耐熱性の無機材料により保証さ
れている。この潤滑は、低温で用いる液体潤滑に対して
、乾性の表面潤滑である。
【０００４】これらの固体潤滑剤は摩擦が生じる表面上
に種々の厚さの堆積物の形で導入される。それらは、粉
末状で直接、あるいは有機または無機のバインダーとの
組成物の形で堆積される。
【０００５】しかしながら、これらの高温に耐え且つ摩
擦表面に導入される固体潤滑剤は、この表面に適当な潤
滑を与えることができない。従って、相対的に動作して
いる二つのセラミック間に堆積したグラファイト層は極
めて早く除去される。この現象は多くの知られた固体潤
滑剤により修正されてきた。
【０００６】本発明の目的は、一方で、潤滑される二つ
の表面間に安定な層を形成し、他方で、特に外部条件、
特に、極めて高い温度及び高荷重の下で極めて低い摩擦
係数をもたらす、ひとつがセラミック材料からできた表
面用の固体潤滑剤を提供することによってこれらの欠点
を解消することにある。
【０００７】要するに、本発明は、第１の材料からでき
た第１の表面とセラミック材料でできた第２の表面間の
接触を乾性潤滑するための材料を提供する。この潤滑剤
は、主成分として少なくとも一種の希土類弗化物を含む
。
【０００８】希土類とは、原子番号５７〜７１に渡るラ
ンタン系列の元素を意味し、原子番号３９のイットリウ
ムを含む。従って、例えば、セリウム、ランタン、ネオ
ジム、ガドリニウム弗化物を挙げ得る。
【０００９】本発明の好ましい態様に従えば、本発明の
潤滑剤は、潤滑されるべき表面の一の面の上に層または
フィルム状に配置される。潤滑剤は密集（圧縮）するの
が有利である。
【００１０】本発明の別の態様に従えば、本発明の潤滑
剤は、また、希土類弗化物が分散されるバインダーを形
成する無機または有機化合物を含む。例えば、ポリキノ
キシリン、ポリベンズイミダゾール、ポリイミド、アク
リル、ポリビニル、アセテート、フェノール、シリコー
ン、エポキシ、ポリアミド、ウレタン、ポリビニルブチ
ラールまたは同様のポリマーを有機バインダーとして挙
げ得る。
【００１１】同様に、本発明に好適な鉱物のまたは無機
バインダーとして、例えば、珪酸ナトリウム並びに、ナ
トリウム及び／またはカリウム及び／またはアルミニウ
ム珪酸塩のような珪酸塩または燐酸塩を挙げ得る。
【００１２】本発明の潤滑剤は、また耐蝕性の改善用ま
たは、潤滑剤、着色剤、湿潤剤、粘度改質剤等の用途促
進用の種々の添加剤を含み得る。
【００１３】バインダー及び希土類弗化物の濃度は臨界
的ではない。しかしながら、本発明の好ましい具体例に
従えば、潤滑剤中の希土類弗化物の重量濃度は少なくと
も５０％、好ましくは８０％〜９５％である。
【００１４】上記第１面は任意の材料で作製し得るが、
この材料は、例えば、ニッケルまたはコバルト含有合金
のような耐火型の金属材料、または非酸化物（ＳｉＣ、
Ｓｉ３　Ｎ４　、ＢＮ）または酸化物セラミック（ムラ
イト、ジルコニア等）のようなセラミックのような高温
度に耐え得る材料であるのが有利である。
【００１５】本発明の好ましい態様において、本発明の
潤滑剤はセラミック材料でできた二つの面間の潤滑を確
保するのに特に適した材料にするのが有利である。
【００１６】該セラミックの性質は臨界的ではなく、Ｓ
ｉＣ、ＢＮ、Ｓｉ３　Ｎ４　、ジルコニア、ムライト等
を基質とするセラミックを挙げ得る。
【００１７】従って、セラミック材料でできた面間に配
置された潤滑剤は、特に高温度で且つ高荷重の下で有効
な潤滑を保証する。さらに、潤滑剤は除去されず、従っ
て、長期間（数十時間）適度な潤滑を可能にする。
【００１８】さらに、希土類弗化物は高温で安定である
ので、良好なレベルの潤滑が長期使用後でさえも維持さ
れる。
【００１９】本発明の別の課題は、少なくとも一方がセ
ラミック材料でできた二つの面間の接触部を潤滑する方
法にある。この方法は潤滑すべき二つの表面間に、少な
くとも一種の希土類弗化物を含む潤滑剤の層またはフィ
ルムを挿入することからなる。
【００２０】本発明の好ましい希土類元素として、上に
希土類元素を掲げた。
【００２１】本発明の好ましい態様に従えば、潤滑剤は
、希土類弗化物が分散される有機または無機のバインダ
ーを含む。
【００２２】これらの有機または無機バインダーは、本
発明の好ましいバインダー及び希土類組成物を有するも
のとして上に掲げた。
【００２３】用いる希土類弗化物は、平均粒子径が好ま
しくは５０μｍ以下である粉末が有利である。
【００２４】潤滑剤の層またはフィルムを、潤滑される
べき材料の一方のまたは両方の面上に、それらの材料を
配置する前に堆積する。
【００２５】部品を、加熱処理にかけてバインダーが含
み得る任意の溶剤を蒸発し得る。また、加熱処理は、潤
滑剤のバインダーを少なくとも部分的に熱分解するため
に部品を装着する前にしてもよい。
【００２６】部品を運転させる前に、潤滑剤のフィルム
または層を圧縮するのが有利になり得る。
【００２７】本発明の方法の別の具体例に従えば、潤滑
剤を、任意の慣用の方法を用いて組成物を成形すること
によって、例えば、リング、ワッシャー等のような所望
の形状に成形し得る。
【００２８】本発明の方法のさらに別の具体例に従えば
、潤滑剤を、プラズマトーチかあるいはフレームブロー
トーチのいずれかを用いて材料の一方の面に被覆する。 従って、この場合にバインダーは不要である。
【００２９】本発明の別の目的、利点及び詳細は、詳細
な説明、単なる模範として以下に与えた例、及び添付の
図面により一層明らかになる。
【００３０】第１図に示すような一方が特定の方向に回
転運動している二つのセラミック部品１、２に関する試
験を、潤滑剤で部品１の面３を覆い、例えば、潤滑剤を
該面に拡散することによって実施する。
【００３１】図示した組立体において、環４及び５をそ
れらがセラミック部品１の面にもたれるように配置する
。それらの環は粉末を充填しそして画定した容量に圧縮
することを可能にする。これらの環は潤滑剤が堆積した
後に、この材料を圧縮した後に、取り去るのが有利であ
る。
【００３２】従って、部品が運転状態に入る前に、１０
０〜３００ｋｇの荷重がかけて潤滑剤を伸ばし広げる。
【００３３】次いで部品を運転させる。例えば、部品２
を０．１ｍ／ｓの速度で回転させることによって運転す
る。
【００３４】潤滑剤の有効性を決定するために、部品２
を回転運動させるのに必要な運転トルクを種々の温度（
２０℃〜１０００℃）で測定する。このトルクを測定す
ると摩擦係数（Ｋ）が求められる。これらの測定をセラ
ミック部品１及び２にかけられる種々の荷重に関して実
行する。
【００３５】種々の潤滑剤により実行した試験結果を以
下の表に掲げる。
【００３６】
【表１】 　　例　　　　温度（℃）　　　　潤滑剤　　　　　　
　　　　　　時間（分）　　　　　　　　　　摩擦係数
　　　　　　　　　　　　　　　　　　　　　　　　　
　　　　　　　　　　　　　　　　　　　　　　　　　
　　　　　　　　　　　　　　　　　　　　　　　　１
　　　　　　　　　　　　　　　　グラファイト繊維　
　　　１０　　　　　　　　　　　　　　　　０．９５
　　　　　　　　　　　　　　　　　　　　　　　　　
　　　　　　　　　　　　　　　　　　　３０　　　　
　　　　　　　　　　　　０．７５　　　　　　　　　
　　　　　　　　　　　　　　　　　　　　　　　　　
　　　　　　　　　　６０　　　　　　　　　　　　　
　　　０．７５　　　　　　２　　　　２０　　　　　
　　　ＫＳ７５（Ｌｏｎｚａ）　　　　　　　５　　　
　　　　　　　　　　　　　０．８０　　　　　　　　
　　　　　　　　　　　　　　　　グラファイト＋　　
　　　　３０　　　　　　　　　　　　　　　　０．８
０　　　　　　　　　　　　　　　　　　　　　　　　
バインダー　　　　　　　　　　６０　　　　　　　　
　　　　　　　　０．８０　　　　　　３　　　　２０
　　　　　　　　ＣｅＦ３　＋　　　　　　　　　　　
　５　　　　　　　　　　　　　　　　０．５０　　　
　　　　　　　　　　　　　　　　　　　　　バインダ
ー　　　　　　　　　　３０　　　　　　　　　　　　
　　　　０．３０　　　　　　　　　　　　　　　　　
　　　　　　　　　　　　　　　　　　　　　　　　　
　　６０　　　　　　　　　　　　　　　　０．３２　
　　　　　４　　１０００　　　　　　ＣｅＦ３　＋　
　　　　　　　　　　　５　　　　　　　　　　　　　
　　　０．１８　　　　　　　　　　　　　　　　　　
　　　　　　バインダー　　　　　　　　　　３０　　
　　　　　　　　　　　　　　０．１２　　　　　　　
　　　　　　　　　　　　　　　　　　　　　　　　　
　　　　　　　　　　　　６０　　　　　　　　　　　
　　　　　０．０６　　　　実験条件：摺動速度は０．
１ｍ／ｓ 標準荷重は１０００Ｎ
【００３７】試験１及び２は、摩擦係数の値が短時間の
運転後に高いので、接触部に導入された材料が”トラッ
プ”されていないことをはっきりと示している。この現
象は、第２図の曲線によって表わされ、摩擦係数の値（
Ｋ）の急激な上昇は潤滑剤の離脱に起因する（例１及び
２）。
【００３８】これに対して、本発明に従う潤滑剤（例３
及び４）により、トラッピングは永久であり且つ適用さ
れた荷重が増加したときでさえ（図４）また温度が上昇
したとき（図５）でも、安定な運転状態（図３）をもた
らす。
【００３９】接触部分の潤滑剤のトラッピングは、粒子
間及び第１材料に対する粒子の自己接着性を増加するこ
とにより改良され得る。例３及び４において、ＣｅＦ３
　粉末は、重量基準により５％の割合で有機バインダー
（モンサント（Ｍｏｎｓａｎｔｏ）Ｂ７４ポリビニル樹
脂）により処理した。
【００４０】同様の結果は、１０％及び２０％のバイン
ダー濃度及び一層高い分子量のポリビニル樹脂でも観測
された。
【００４１】更に、試験を、２５〜４０μｍの粒径の粉
末をプラズマトーチを用いて噴霧することにより金属部
品の表面上にＣｅＦ３　の層を堆積して行なった。この
金属部品とＳｉＣセラミック部品との摩擦係数を種々の
温度及び種々の荷重の下で測定した。
【００４２】こうして、室温で摩擦係数は高いが、温度
が上昇したときに急速に減少し、５００℃を超える温度
、例えば、２００ｄａＮから１０００ｄａＮの高い荷重
のもとでさえも、８００℃の温度で、時間の関数として
摩擦係数の変化を示す図６ａ及び適用した荷重Ｆ（ｄａ
Ｎ）時間を関数としてに示す図６ｂように、非常に低く
なる。
【図面の簡単な説明】
【図１】本発明の方法に従い潤滑された二つのセラミッ
ク部品の断面図を示す。
【図２】例２におけるグラファイト潤滑剤を備えた二つ
のＳｉＣセラミック環の間の摩擦係数（Ｋ）の変化を時
間の関数として示す。
【図３】例３におけるＣｅＦ３　潤滑剤＋バインダーを
備えた二つのＳｉＣセラミック環の間の摩擦係数（Ｋ）
の変化を時間の関数として示す。
【図４】４ａ及び４ｂは、例４におけるＣｅＦ３　潤滑
剤＋バインダーを備えたセラミック（ＳｉＣ）環と金属
環との間の荷重（Ｆ）及び摩擦係数（Ｋ）の変化を時間
の関数として示す。
【図５】５ａ及び５ｂは、例５におけるＣｅＦ３　潤滑
剤＋バインダーを備えたセラミック（ＳｉＣ）環と金属
環との間の荷重（Ｆ）及び摩擦係数（Ｋ）の変化を時間
の関数として示す。
【図６】プラズマトーチを用いて金属部品の表面上にＣ
ｅＦ３　の層を堆積して試験を行った場合、８００℃の
温度にて、図６（ａ）は時間の関数として摩擦係数の変
化を示し、図６（ｂ）は適用した荷重Ｆ（ｄａＮ）を時
間を関数として示す。

Claims (19)

    【特許請求の範囲】
  1. 【請求項１】　　第１の材料でできた第１面とセラミッ
    クでできた第２面との間の接触部を乾性潤滑するための
    固体材料であって、少なくとも一種の希土類弗化物を含
    むことを特徴とする上記固体材料。
  2. 【請求項２】　　セリウム、ランタン、ネオジムまたは
    ガドリニウム弗化物を含む請求項１の材料。
  3. 【請求項３】　　希土類弗化物が圧縮されている請求項
    １または２の材料。
  4. 【請求項４】　　希土類弗化物が、プラズマトーチまた
    はフレームブロートーチを用いて表面に被覆された請求
    項１または２の方法。
  5. 【請求項５】　　バインダーを形成する無機または有機
    化合物を含む請求項１〜３のいずれか一項の材料。
  6. 【請求項６】　　バインダーを形成する化合物が、ポリ
    キノキシリン、ポリベンズイミダゾール、ポリイミド、
    アクリル、ポリビニル、アセテート、フェノール、シリ
    コーン、エポキシ、ポリアミドまたはウレタンポリマー
    のような樹脂からなる群から選ばれる有機樹脂である請
    求項５の材料。
  7. 【請求項７】　　バインダーを形成する化合物が、珪酸
    塩または燐酸塩を含む化合物からなる群から選ばれる無
    機化合物である請求項５の材料。
  8. 【請求項８】　　第１の面が耐火物型のニッケルまたは
    コバルト含有金属材料並びに非酸化物セラミックである
    ＳｉＣ，Ｓｉ３　Ｎ４　，ＢＮ及び酸化物セラミックで
    あるムライト，ジルコニアから選ばれるセラミック材料
    からなる群から選ばれる材料でできている請求項１〜７
    のいずれか一項の材料。
  9. 【請求項９】　　二つの表面がセラミック材料でできて
    いる請求項１〜８のいずれか一項の材料。
  10. 【請求項１０】　　セラミック材料が、ＳｉＣ，ＢＮ，
    Ｓｉ３　Ｎ４　，ジルコニア及びムライトを含むセラミ
    ックからなる群から選ばれる請求項１〜９のいずれか一
    項の材料。
  11. 【請求項１１】　　一方がセラミック材料からできた二
    つの面間の接触部を乾性潤滑する方法であって、潤滑さ
    れるべき二つの面間に少なくとも一種の希土類弗化物を
    含む潤滑剤の層を挿入することを特徴とする上記方法。
  12. 【請求項１２】　　潤滑剤が、少なくとも一種の希土類
    弗化物が分散される無機または有機バインダーを含む請
    求項１１の方法。
  13. 【請求項１３】　　希土類弗化物が、重量基準で潤滑剤
    の少なくとも５０％を示す請求項１２の方法。
  14. 【請求項１４】　　有機バインダーが、ポリキノキシリ
    ン、ポリベンズイミダゾール、ポリイミド、アクリル、
    ポリビニル、アセテート、フェノール、シリコーン、エ
    ポキシ、ポリアミド及びウレタンポリマーのような樹脂
    からなる群から選ばれる請求項１２または１３の方法。
  15. 【請求項１５】　　無機バインダーが珪酸塩または燐酸
    塩を含む化合物からなる群から選ばれる請求項１２の方
    法。
  16. 【請求項１６】　　潤滑剤を、プラズマトーチまたはフ
    レームブロートーチを用いて、潤滑されるべき面の一方
    に堆積する請求項１１の方法。
  17. 【請求項１７】　　希土類弗化物が弗化セリウム、弗化
    ランタン、弗化ネオジム及び弗化ガドリニウムからなる
    群から選ばれる一種である請求項１１〜１６の方法。
  18. 【請求項１８】　　潤滑剤の層を潤滑されるべき二つの
    表面間で圧縮する請求項１１〜１５及び１７のいずれか
    一項の方法。
  19. 【請求項１９】　　潤滑剤の層を、潤滑されるべき面間
    に配置する前に、所望の形状に圧縮する請求項１１〜１
    ５及び１７〜１８のいずれか一項の方法。
JP3103632A 1990-04-13 1991-04-10 セラミック表面用の乾性潤滑剤及び潤滑方法 Pending JPH04227688A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9004817A FR2660930A1 (fr) 1990-04-13 1990-04-13 Lubrifiant pour surface en ceramique et procede de lubrification.
FR90-04817 1990-04-13

Publications (1)

Publication Number Publication Date
JPH04227688A true JPH04227688A (ja) 1992-08-17

Family

ID=9395779

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3103632A Pending JPH04227688A (ja) 1990-04-13 1991-04-10 セラミック表面用の乾性潤滑剤及び潤滑方法

Country Status (7)

Country Link
EP (1) EP0452189A1 (ja)
JP (1) JPH04227688A (ja)
KR (1) KR910018524A (ja)
CA (1) CA2040356A1 (ja)
FR (1) FR2660930A1 (ja)
IE (1) IE911246A1 (ja)
PT (1) PT97356A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009278971A (ja) * 2008-05-19 2009-12-03 F Hoffmann La Roche Ag 改良された冷却器／加熱器の構成

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2684684B1 (fr) * 1991-12-06 1994-03-18 Rhone Poulenc Chimie Pieces denses autolubrifiantes en fluorures de terres rares frittes et leur procede d'obtention.
US5538649A (en) * 1995-09-28 1996-07-23 John Crane Inc. Carbon composite mateiral for tribological applications
NL1022222C2 (nl) * 2002-12-20 2004-06-22 Te Strake Surface Technology B Smeersysteem van het type vaste film dat geschikt is voor het bedekken van een metalen, keramisch of polymeer materiaal dat aan wrijving onderhevig is.
NL1022223C2 (nl) * 2002-12-20 2004-06-22 Te Strake Surface Technology B Smeersysteem van het type vaste film dat geschikt is voor het bedekken van een metalen, keramisch of polymeer materiaal dat aan wrijving onderhevig is.
NL1023420C1 (nl) * 2002-12-20 2004-06-22 Te Strake Surface Technology B Smeersysteem van het type vaste film dat geschikt is voor het bedekken van een metalen, keramisch of polymeer materiaal dat aan wrijving onderhevig is.
NL1022221C2 (nl) * 2002-12-20 2004-06-22 Te Strake Surface Technology B Smeersysteem van het type vaste film dat geschikt is voor het bedekken van een metalen, keramisch of polymeer materiaal dat aan wrijving onderhevig is.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3830280A (en) * 1971-01-25 1974-08-20 Mallory & Co Inc P R Rare earth flouride lubricant for die casting components
JPS5017608A (ja) * 1973-05-14 1975-02-25
US4728448A (en) * 1986-05-05 1988-03-01 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Carbide/fluoride/silver self-lubricating composite
EP0315532A1 (fr) * 1987-11-06 1989-05-10 Compagnie Francaise De Produits Industriels Procédé de lubrification de la surface de pièces métalliques, en cuivre ou en alliages à base de fer ou de cuivre, devant être déformées à froid ou à chaud et moyens de lubrification mis en oeuvre

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Publication number Priority date Publication date Assignee Title
GB1602603A (en) * 1978-05-30 1981-11-11 Rocol Ltd Coated metalworking tools
JPS6071581A (ja) * 1983-09-29 1985-04-23 工業技術院長 耐熱耐摺動損傷無機系構造材料
US4831977A (en) * 1987-07-17 1989-05-23 Ethyl Corporation Pistons with wear resistant solid film lubricant coatings
US4900579A (en) * 1988-02-18 1990-02-13 Adolph Coors Company Process for applying and bonding a solid lubricant on a substrate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3830280A (en) * 1971-01-25 1974-08-20 Mallory & Co Inc P R Rare earth flouride lubricant for die casting components
JPS5017608A (ja) * 1973-05-14 1975-02-25
US4728448A (en) * 1986-05-05 1988-03-01 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Carbide/fluoride/silver self-lubricating composite
EP0315532A1 (fr) * 1987-11-06 1989-05-10 Compagnie Francaise De Produits Industriels Procédé de lubrification de la surface de pièces métalliques, en cuivre ou en alliages à base de fer ou de cuivre, devant être déformées à froid ou à chaud et moyens de lubrification mis en oeuvre

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009278971A (ja) * 2008-05-19 2009-12-03 F Hoffmann La Roche Ag 改良された冷却器／加熱器の構成

Also Published As

Publication number Publication date
PT97356A (pt) 1991-12-31
CA2040356A1 (fr) 1991-10-14
EP0452189A1 (fr) 1991-10-16
KR910018524A (ko) 1991-11-30
IE911246A1 (en) 1991-10-23
FR2660930A1 (fr) 1991-10-18

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