JP7236063B1 - 無機粉末の製造装置及び製造方法 - Google Patents
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Abstract
Description
表3には、発明例と比較例とによるニッケル粉末の粒度分布と平均粒度とを分析する結果が示されている。粒度分布と平均粒度は、それぞれ幾何標準偏差(Geometric standard deviation、GSD)と中央直径値(Count median diameter、CMD)とを通じて算出した。
610:反応チャンバ
620:第1供給部
630:第2供給部
640:加熱部
700:前駆体供給部
710、730:下方流路
720:上方流路
Claims (16)
- 凝縮相の前駆体が気化されて気相前駆体が形成される気化部と、
前記気化部で形成された気相前駆体の一部が凝縮相に析出される部分析出部と、
前記部分析出部から一部が凝縮相に析出され、残りの気相前駆体が反応ガスと反応して無機粉末を形成する反応部と、を含み、
前記部分析出部での前記気相前駆体の平衡蒸気圧は、前記気化部で形成された前記気相前駆体の蒸気圧よりも低く、
前記反応部での前記前駆体の平衡蒸気圧は、前記部分析出部から一部が凝縮相に析出された気相前駆体の蒸気圧以上である、無機粉末の製造装置。 - 前記気化部の温度は、前記部分析出部の温度よりも高く、
前記反応部の温度は、前記部分析出部の温度以上である、請求項1に記載の無機粉末の製造装置。 - 前記部分析出部は、前記気相前駆体の析出を誘導する析出誘導部材を含む、請求項1に記載の無機粉末の製造装置。
- 流路を含む前駆体供給部と、
前記前駆体供給部から供給される気相前駆体が反応ガスと反応して無機粉末を形成する反応部と、を含み、
前記前駆体供給部は、凝縮相の前駆体を気化させて気相前駆体を形成する気化部と、
前記気化部で形成された気相前駆体の一部が凝縮相に析出される部分析出部と、を含み、
前記前駆体供給部の流路は、流体が前記気化部及び前記部分析出部を順に通過した後、前記反応部に排出されるように構成され、
前記気化部及び前記部分析出部は、前記前駆体供給部の流路内に設けられ、
前記反応部には、前記部分析出部から一部が凝縮相に析出され、残りの気相前駆体が投入され、
前記部分析出部での前記前駆体の平衡蒸気圧は、前記気化部で形成された前記気相前駆体の蒸気圧よりも低く、
前記反応部での前記前駆体の平衡蒸気圧は、前記部分析出部から一部が凝縮相に析出された気相前駆体の蒸気圧以上である、無機粉末の製造装置。 - 前記流路は、流体が下方に流動する下方流路及び流体が上方に流動する上方流路を1つ以上含んで構成され、
前記下方流路及び前記上方流路は、互いに隣接して並列に配される、請求項4に記載の無機粉末の製造装置。 - 前記気化部の温度は、前記部分析出部の温度よりも高く保持し、
前記反応部の温度は、前記部分析出部の温度以上に保持する、請求項4に記載の無機粉末の製造装置。 - 前記部分析出部にクエンチングガスが投入されるクエンチングガス投入口を含む、請求項4に記載の無機粉末の製造装置。
- 前記気化部は、熱源で加熱された下方流路内に含まれ、
前記部分析出部は、前記気化部を含む下方流路から繋がる上方流路と、前記反応部に繋がる下方流路と、の間に配されることを特徴とする、請求項4に記載の無機粉末の製造装置。 - 前記気化部は、熱源で加熱された下方流路に沿って下方に移動する流体が通過する領域に配された前駆体気化装置を含み、
前記部分析出部は、前記前駆体気化装置を含む下方流路から繋がる上方流路と、前記反応部に繋がる下方流路と、の間に配される、請求項4に記載の無機粉末の製造装置。 - 前記気化部は、熱源で加熱された上方流路に沿って上方に移動する流体が通過する領域に配された前駆体気化装置を含み、
前記部分析出部は、前記前駆体気化装置を含む上方流路から繋がる下方流路と、前記反応部に繋がる上方流路と、の間に配される、請求項4に記載の無機粉末の製造装置。 - 気化部で凝縮相の前駆体を気化させて形成された気相前駆体を形成する段階と、
前記気相前駆体の一部を部分析出部から凝縮相に析出させる段階と、
一部が凝縮相に析出され、残りの気相前駆体を反応部で反応ガスと反応させて無機粉末を形成する段階と、を含むが、
前記気化部で形成された前記気相前駆体の蒸気圧は、前記部分析出部での前記前駆体の平衡蒸気圧よりも高くて、前記部分析出部から前記気相前駆体の一部が析出され、
前記部分析出部から一部が析出された後、残りの気相前駆体の蒸気圧は、前記反応部での前記前駆体の平衡蒸気圧以下である、無機粉末の製造方法。 - 前記気化部の温度は、前記部分析出部の温度よりも高く、
前記反応部の温度は、前記部分析出部の温度以上である、請求項11に記載の無機粉末の製造方法。 - 前記無機粉末は、金属粉末あるいはセラミック粉末を含む、請求項11に記載の無機粉末の製造方法。
- 前記前駆体は、金属酢酸塩、金属臭化物、金属炭酸塩、金属塩化物、金属フッ化物、金属水酸化物、金属ヨウ化物、金属硝酸塩、金属酸化物、金属リン酸塩、金属ケイ酸塩、金属硫酸塩、及び金属硫化物のうち少なくとも何れか1つを含む、請求項11に記載の無機粉末の製造方法。
- 前記無機粉末は、ニッケル、銅、銀、鉄、アルミニウム、コバルト、白金、金、錫、及びそれを含む合金のうち何れか1つを含む、請求項11に記載の無機粉末の製造方法。
- 前記無機粉末は、ニッケル、銅、銀、鉄、アルミニウム、コバルト、白金、金及び錫のうち何れか1つの酸化物、窒化物及び炭化物のうち何れか1つを含む、請求項11に記載の無機粉末の製造方法。
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JP2000345216A (ja) | 1999-05-31 | 2000-12-12 | Toho Titanium Co Ltd | 金属粉末の製造方法および製造装置 |
JP2005139555A (ja) | 2003-11-04 | 2005-06-02 | Korea Mach Res Inst | 化学気相凝縮法によるナノ鉄粉末の製造方法 |
JP2007522347A (ja) | 2004-02-16 | 2007-08-09 | クライマックス・エンジニアード・マテリアルズ・エルエルシー | 銀のナノ粒子を生産するための方法および装置 |
JP2007063607A (ja) | 2005-08-30 | 2007-03-15 | Fujikura Ltd | 金属粉の製造方法及び装置 |
JP2007138205A (ja) | 2005-11-15 | 2007-06-07 | Fujikura Ltd | 金属粉の製造装置及び方法 |
JP2008045202A (ja) | 2006-08-18 | 2008-02-28 | Korea Inst Of Science & Technology | 気相反応法を用いた金属ナノ粉末の製造方法 |
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