JP5076137B2 - 高純度タンタルおよびそれを含む、スパッタターゲットのような製品 - Google Patents
高純度タンタルおよびそれを含む、スパッタターゲットのような製品 Download PDFInfo
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- JP5076137B2 JP5076137B2 JP2006250087A JP2006250087A JP5076137B2 JP 5076137 B2 JP5076137 B2 JP 5076137B2 JP 2006250087 A JP2006250087 A JP 2006250087A JP 2006250087 A JP2006250087 A JP 2006250087A JP 5076137 B2 JP5076137 B2 JP 5076137B2
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- tantalum
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- 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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
-
- 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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/3407—Cathode assembly for sputtering apparatus, e.g. Target
- C23C14/3414—Metallurgical or chemical aspects of target preparation, e.g. casting, powder metallurgy
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/24—Obtaining niobium or tantalum
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S148/00—Metal treatment
- Y10S148/014—Capacitor
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S148/00—Metal treatment
- Y10S148/158—Sputtering
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Physical Vapour Deposition (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
Description
本発明は少なくとも99.995%の純度を有する金属タンタルに関する。好適には、金属タンタルは少なくとも99.999%の純度を有し、約99.995%から約99.999%以上の純度に及びうる。他の範囲は約99.998%から約99.999%、および約99.999%から約99.9992%、および約99.999%から約99.9995%を含む。さらに本発明は、合金の1成分として高純度タンタルを含有するタンタルにもとづく合金もしくは他の合金のような、高純度金属タンタルからなる金属合金に関する。
ナトリウム還元された市販グレードのタンタル粉末の数多くのサブロット(それぞれ約90〜360kg(約200〜800ポンド)の目方がある)が、電子ビーム溶融用の99.999%Ta原料としての適合性を化学的に分析された。各粉末ロットからの代表試料がグロー放電質量分析(GDMS)により分析された:ニオブ(Nb)、モリブデン(Mo)およびタングステン(W)の合計不純物含量8ppm 未満の粉末サブロットが溶融のために選ばれた。
フルオロタンタル酸カリウム(Potassium fluotantalate)(K2TaF7)が得られ、スパーク光源(spark source)質量分析によるとK2TaF7は5ppm 以下のニオブを示した。MoおよびWの含量も分光検出により分析され、含量はMo 5ppm 未満、W 100ppm 未満であった。特に、K2TaF7はNb 2ppm 以下、Mo 1ppm 未満、そしてW 2ppm 以下の含量を有していた。各試料において、Nb,MoおよびWの合計記録量は5ppm 未満であった。それぞれ約990kg(2200ポンド)の4ロットが分析された。
2つの異なる処理方法が使用された。第1に、99.998%純度のタンタルインゴットが用いられ、3回の電子ビーム溶融に供され、公称約30cm(12インチ)径のインゴットを得た。インゴットは、約28.8cm(11.5インチ)まできれいに機械加工され、ついで空気中で約260℃に4〜8時間加熱された。ついでインゴットは平たく鍛造加工され、切断され、スラブ(4インチ×10インチ、長さ約28〜32インチ)に機械加工され、ついでHF/HNO3/水溶液で酸洗浄された。スラブは1050,1150および1300℃で、5×10-4Torrの真空下、2時間アニールされ、ついで0.500および0.250インチ規格の板片に冷間圧延された。この冷間圧延は厚さ4インチ、幅10インチ、長さ30インチのスラブを得、それをインゴット軸に垂直に、幅31インチに対してパスあたり0.200インチで圧延することにより達成された。ついで板はインゴット軸に平行に、厚さ0.650インチもしくは0.500インチに対してパスあたり0.100インチで圧延された。両方の圧延は2−ハイブレークダウン圧延ミルで行なわれた。各板はパスあたり0.500インチの多数のパス、ついでパスあたり0.025インチで、0.500インチ板もしくは0.250インチ板の仕上げ規格に適合するように最終的調整をされることにより4つの高度仕上げ圧延ミルを用いて圧延された。板はついで950〜1150℃の温度で仕上げアニールに供された。
粒径および集合組織が、圧延板ならびに鍛造加工および圧延されたディスクから採取された試料の縦もしくは半径に沿って、それぞれ測定された。粒径はASTME−112法を用いて測定された。平形および円形処理により得られた製品についてのアニール検討からの結果は、それぞれ表3および4に示される。中間アニール処理は最終製品の粒径に注目に値する影響を与えていなかった。さらに、板について、0.500および0.250インチ厚さのタンタルの最終粒径は同等であった。材料の粒径に著しく影響がみられたのは最終アニール温度であった:最終アニール温度が高ければ高いほど、得られる粒径は大きくなる。
本発明の他の態様は、本明細書を考慮して、そしてここに開示された本発明の実施から当業者に明らかであろう。本明細書および実施例は例証的なものであり、発明の真の範囲および趣旨は請求範囲の記載に示される。
Claims (9)
- 少なくとも99.995%の純度、150μm以下(約75μm以下を除く)の平均粒度および2mm〜3.8cm(0.080〜1.50インチ)の厚みを有する平板状金属タンタルであって、該平板状金属タンタルの全厚みのいたるところで、
a)(100)極点図が該平板状金属タンタルの全厚みのいかなる5%厚さ区分内でも0ランダムから5ランダムの中心ピーク強度を有する、および
b)同一区分内での(111):(100)中心ピーク強度の比の自然対数が−1.5〜7または−3〜5である、
を満たす集合組織を有する、スパッタターゲット用の平板状金属タンタル。 - 該金属が十分に再結晶化されている、請求項1記載の平板状金属タンタル。
- 該金属が少なくとも部分的に再結晶化されている、請求項1記載の平板状金属タンタル。
- 該金属の98%以上が再結晶化されている、請求項1記載の平板状金属タンタル。
- 該金属の80%以上が再結晶化されている、請求項1記載の平板状金属タンタル。
- 該比の自然対数が−1.5から7.0である、請求項1記載の平板状金属タンタル。
- 99.995%から99.999%の純度を有する、請求項1記載の平板状金属タンタル。
- 請求項1記載の平板状金属タンタルを使用してなる、スパッタターゲット。
- 請求項3記載の平板状金属タンタルを使用してなる、スパッタターゲット。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/199,569 US6348113B1 (en) | 1998-11-25 | 1998-11-25 | High purity tantalum, products containing the same, and methods of making the same |
US09/199,569 | 1998-11-25 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000584117A Division JP4652574B2 (ja) | 1998-11-25 | 1999-11-24 | 高純度タンタルおよびそれを含む、スパッタターゲットのような製品 |
Related Child Applications (1)
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---|---|---|---|
JP2011080406A Division JP2011190537A (ja) | 1998-11-25 | 2011-03-31 | 高純度タンタルおよびそれを含む、スパッタターゲットのような製品 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2007084931A JP2007084931A (ja) | 2007-04-05 |
JP2007084931A5 JP2007084931A5 (ja) | 2011-05-26 |
JP5076137B2 true JP5076137B2 (ja) | 2012-11-21 |
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ID=22738107
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000584117A Expired - Lifetime JP4652574B2 (ja) | 1998-11-25 | 1999-11-24 | 高純度タンタルおよびそれを含む、スパッタターゲットのような製品 |
JP2006250087A Expired - Lifetime JP5076137B2 (ja) | 1998-11-25 | 2006-09-14 | 高純度タンタルおよびそれを含む、スパッタターゲットのような製品 |
JP2011080406A Withdrawn JP2011190537A (ja) | 1998-11-25 | 2011-03-31 | 高純度タンタルおよびそれを含む、スパッタターゲットのような製品 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000584117A Expired - Lifetime JP4652574B2 (ja) | 1998-11-25 | 1999-11-24 | 高純度タンタルおよびそれを含む、スパッタターゲットのような製品 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011080406A Withdrawn JP2011190537A (ja) | 1998-11-25 | 2011-03-31 | 高純度タンタルおよびそれを含む、スパッタターゲットのような製品 |
Country Status (15)
Country | Link |
---|---|
US (4) | US6348113B1 (ja) |
EP (2) | EP1496130A1 (ja) |
JP (3) | JP4652574B2 (ja) |
KR (1) | KR100624630B1 (ja) |
CN (2) | CN101407881B (ja) |
AT (1) | ATE279542T1 (ja) |
AU (1) | AU764689B2 (ja) |
BR (1) | BR9915674A (ja) |
CA (1) | CA2352336A1 (ja) |
DE (1) | DE69921181T3 (ja) |
ID (1) | ID29867A (ja) |
MX (1) | MXPA01005264A (ja) |
RU (1) | RU2233899C2 (ja) |
TW (1) | TW530091B (ja) |
WO (1) | WO2000031310A1 (ja) |
Cited By (1)
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US11177119B2 (en) | 2017-03-30 | 2021-11-16 | Jx Nippon Mining & Metals Corporation | Tantalum sputtering target |
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1998
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11177119B2 (en) | 2017-03-30 | 2021-11-16 | Jx Nippon Mining & Metals Corporation | Tantalum sputtering target |
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