JP6463746B2 - 高エネルギービームと共に目標方法/材料の組合せに適した粉体を用いる、粉体粒子の融解又は焼結による部品の付加的な製造方法 - Google Patents
高エネルギービームと共に目標方法/材料の組合せに適した粉体を用いる、粉体粒子の融解又は焼結による部品の付加的な製造方法 Download PDFInfo
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Description
例えば、−50℃の露点は、38.8パーツ・パー・ミリオン(ppm)の水蒸気圧力と関係している。
(d90%−d50%)/d50%≦0.66
及び
(d50%−d10%)/d50%≦0.33
と
(d90%−d10%)/d50%≦1.00
である平均粒径値d50%前後で狭い、という事実によって達成される。
好ましくは、「スパン」値によって定義される粒子の粒度分布
(d90%−d10%)/d50%
は、0.50以下であり、
(d90%−d50%)/d50%≦0.33
及び
(d 50%−d10%)/d50%≦0.17
である。
「球形度」という用語は、次のワーデルによって定義される球形度係数(無次元数)を意味するように用いられ、球形度係数は、対象となる粒子の表面積に対する、粒子と同じ体積である球体の表面積の比率(ΨV)であり、また、体積相当径(volume equivalent diameter)と面積相当径(area equivalent diameter)との比率の二乗にも等しい。
・具体的には溶媒、分散剤、可塑剤並びにバインダ(安定性、均一性、レオロジー挙動及び沈降)を適切に選択することによる、スリップの配合段階。
・スリップの噴霧段階並びに液滴の乾燥段階(液滴の粒径、粒度分布、速度及び乾燥方法)。懸濁液の形態である個々の粒子の混合物のこの造粒は、(高温の空気又は不活性ガスの流れにおける)低温での微粒化によって、粒子を、凝集体であって、球状で粒径が等しく、50μmを超える場合が多く、優れた流動性の凝集体に変化させることができる。
・高い密度で凝集性のある凝集体を有することが所望される場合、このようにして形成された顆粒を統合する段階(オーブン、火炎又はプラズマトーチ処理)が想定されることもある。さらに、バインダは、バインダが除去されていない、かかる凝集粉体を用いた付加的な製造時に、問題を発生させる場合があり、このため、バインダを除去することは利点である。オーブン処理は、顆粒の特性を変更することなく、顆粒の構造を統合することができるが、酸素アセチレン炎処理は、顆粒の一部を融解し、顆粒を焼結し、球状にし、これによって、顆粒の形態を変化させる。
Claims (13)
- 高エネルギービームにより粉体粒子を融解又は焼結することによって、金属、金属間化合物、セラミック、セラミックマトリックス複合材料、又は不連続補強材料、具体的にはセラミック又は金属間化合物補強材料を含む金属マトリックス複合材料から部品を製造する方法において、
用いられる粉体が、0.8〜1.0の範囲にある球形度、及び1〜√2の範囲にある形状係数を有する粒子の単一粉体であり、それぞれの粉体粒子が、実質的に同一の中間組成を有し、前記粉体の粒子の粒度分布が、
(d90%−d50%)/d50%≦0.66
及び
(d50%−d10%)/d50%≦0.33
と
(d90%−d10%)/d50%≦1.00
である平均粒径値d50%前後で狭く、
前記用いられる粉体の組成が、少なくとも1つの付加的な化学元素であって、0.5重量%未満、すなわち5000ppm又は5g/kg未満の0ではない量であり、前記付加的な化学元素が前記粉体の組成に存在しない状況と比較して、材料から得られる部品の材料の微細構造を変更するのに適した、前記付加的な化学元素を有し、
粉体粒子が補強材料を有し、前記付加的な化学元素が、前記高エネルギービームで複合粉体粒子の一部を融解することにより形成される液体によって、補強材料の濡れを促進するのに適していることを特徴とする方法。 - 「スパン」値によって定義される粒子の粒度分布は、
(d90%−d10%)/d50%
が、0.50以下であり、
(d90%−d50%)/d50%≦0.33
及び
(d 50%−d10%)/d50%≦0.17
であることを特徴とする、請求項1に記載の方法。 - 前記用いられる粉体が、母合金を微粒化又は遠心分離することによって得られることを特徴とする、請求項1又は2に記載の方法。
- 前記用いられる粉体が、被覆(連続的な被覆)又は外皮形成(不連続な被覆)によって得られることを特徴とする、請求項1又は2に記載の方法。
- 前記用いられる粉体が、粉砕/混合によって得られることを特徴とする、請求項1又は2に記載の方法。
- 前記用いられる粉体が、スリップとしても知られている懸濁液を造粒することによって得られることを特徴とする、請求項1又は2に記載の方法。
- 前記用いられる粉体が、前記方法から得られる部品を形成する材料の組成の中の少なくとも1つの化学元素が濃縮された組成を有することを特徴とする、請求項1〜6のいずれか1項に記載の方法。
- 前記化学元素又はその酸化物の中の1つが、前記高エネルギービームによって生じる温度において揮発性であることを特徴とする、請求項7に記載の方法。
- 前記材料がTi6Al4V合金であり、揮発性化学元素がアルミニウムであることを特徴とする、請求項8に記載の方法。
- アルミニウム粉体の濃縮が、前記Ti6Al4V合金の組成に対して0.15重量%〜3重量%の範囲にあることを特徴とする、請求項9に記載の方法。
- 前記材料が、アルミニウム又はリチウムベースの合金であり、揮発性化学元素がリチウムであることを特徴とする、請求項8に記載の方法。
- 前記高エネルギービームがレーザビームであることを特徴とする、請求項1〜11のいずれか1項に記載の方法。
- 直接金属蒸着(DMD)法、選択レーザ融解(SLM)法、又は粉体層に適用される選択レーザ焼結(SLS)法を用いることを特徴とする、請求項12に記載の方法。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR13/01591 | 2013-07-04 | ||
| FR1301591A FR3008014B1 (fr) | 2013-07-04 | 2013-07-04 | Procede de fabrication additve de pieces par fusion ou frittage de particules de poudre(s) au moyen d un faisceau de haute energie avec des poudres adaptees au couple procede/materiau vise |
| PCT/FR2014/051675 WO2015001241A2 (fr) | 2013-07-04 | 2014-06-30 | Procede de fabrication additive de pieces par fusion ou frittage de particules de poudre(s) au moyen d'un faisceau de haute energie avec des poudres adaptees au couple procede/materiau vise |
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| JP2016532773A JP2016532773A (ja) | 2016-10-20 |
| JP6463746B2 true JP6463746B2 (ja) | 2019-02-06 |
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| JP (1) | JP6463746B2 (ja) |
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| RU (1) | RU2682188C2 (ja) |
| WO (1) | WO2015001241A2 (ja) |
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| JP2009270130A (ja) | 2008-04-30 | 2009-11-19 | Aida Kagaku Kogyo Kk | 銀粉末または銀合金粉末、銀または銀合金の造形体の製造方法並びに銀または銀合金の造形体 |
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| DE102024128168A1 (de) * | 2024-09-30 | 2026-04-02 | MTU Aero Engines AG | Verfahren zum abschnittsweisen aufbau oder zur reparatur eines bauteils |
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| US10710156B2 (en) | 2020-07-14 |
| US20160175929A1 (en) | 2016-06-23 |
| WO2015001241A8 (fr) | 2015-02-05 |
| RU2016103534A3 (ja) | 2018-10-18 |
| JP2016532773A (ja) | 2016-10-20 |
| FR3008014A1 (fr) | 2015-01-09 |
| FR3008014B1 (fr) | 2023-06-09 |
| BR112015032930B1 (pt) | 2020-12-01 |
| WO2015001241A3 (fr) | 2015-06-18 |
| RU2016103534A (ru) | 2017-08-07 |
| RU2682188C2 (ru) | 2019-03-15 |
| EP3016764A2 (fr) | 2016-05-11 |
| CA2917038C (fr) | 2021-09-07 |
| CA2917038A1 (fr) | 2015-01-08 |
| CN105764634A (zh) | 2016-07-13 |
| EP3831513A1 (fr) | 2021-06-09 |
| WO2015001241A2 (fr) | 2015-01-08 |
| CN105764634B (zh) | 2019-07-23 |
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