JP2020531680A - 機能性複合粒子及びその製造方法 - Google Patents
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Abstract
Description
蒸発凝縮プロセスを採用して、機能性金属粒子からなる固体金属ブロックを坩堝に入れて、加熱により真空物理気相成長(PVD)プロセス炉に蒸発させ、凝縮させることにより、外面111を有するコア11を形成する工程と、
PVDプロセスにより凝縮状態での機能性金属粒子(コア11)の外面111に、生体適合性セラミックス材料で構成されるPVDセラミックス層を成長させることにより、シェル12を形成する工程であって、当該シェル12は結晶構造であり、結晶粒界121を有し、且つ、コア11中の機能性金属粒子がイオン化状態で結晶粒界121を介してシェル11の外に徐放されることを可能にする工程と、を含む。
実施例1
蒸発凝縮プロセスを採用し、Ag金属ブロックを坩堝に入れて、電子銃により電流強度200Aで加熱することで真空物理気相成長(PVD)プロセス炉へ蒸発させて凝縮させる。
蒸発凝縮プロセスを採用し、Cu金属ブロックを坩堝に入れて、電子銃により電流強度200Aで加熱することで真空物理気相成長(PVD)プロセス炉へ蒸発させて凝縮させる。
蒸発凝縮プロセスを採用し、Zn金属ブロックを坩堝に入れて、電子銃により電流強度200Aで加熱することで真空物理気相成長(PVD)プロセス炉へ蒸発させて凝縮させる。
蒸発凝縮プロセスを採用し、Mg金属ブロックを坩堝に入れて、電子銃により電流強度200Aで加熱することで真空物理気相成長(PVD)プロセス炉へ蒸発させて凝縮させる。
表1〜2から分かるように、本発明の実施例1〜2によって提供される機能性複合粒子がコーティングされていないプラスチックと比較して、コーティングされているプラスチックは明らかにより高い抗菌性能を有する。
Claims (14)
- 機能性金属粒子で構成され、外面を有するコアと、
生体適合性セラミックス材料で構成される物理気相成長(PVD)セラミックス層であり、前記コアの外面に付着しているシェルと、を含み、
前記シェルが結晶構造であることにより、前記コア中の機能性金属粒子が、イオン化状態で結晶粒界を介して前記シェルの外に徐放されることが可能である、
機能性複合粒子。 - 前記機能性金属粒子は抗菌金属粒子であり、前記抗菌金属粒子はAg金属粒子、Zn金属粒子、Cu金属粒子又はそれらの混合物である請求項1に記載の機能性複合粒子。
- 前記機能性金属粒子は成長促進金属粒子であり、前記成長促進金属粒子はCa金属粒子、K金属粒子、Mg金属粒子又はそれらの混合物である請求項1に記載の機能性複合粒子。
- 前記機能性金属粒子の粒子径は5nm〜5mmである請求項1に記載の機能性複合粒子。
- 前記PVDセラミックス層は、Zr、Ti又はAlからなる金属酸化物若しくは金属窒化物のうちの一種又はそれらの混合物で構成される生体適合性セラミックス層である請求項1に記載の機能性複合粒子。
- 前記PVDセラミックス層は、ZrN、TiN、AlTiN又はAl2O3で構成される生体適合性セラミックス層である請求項1に記載の機能性複合粒子。
- 前記PVDセラミックス層は、厚さが5nm〜50000nmであり、表面硬度が1000HV〜4500HVである請求項1に記載の機能性複合粒子。
- 蒸発凝縮プロセスを採用して、機能性金属粒子からなる固体金属ブロックを坩堝に入れて、加熱により真空物理気相成長(PVD)プロセス炉へ蒸発させ、凝縮させる工程と、
PVDプロセスにより、凝縮状態での機能性金属粒子の外面において生体適合性セラミックス材料で構成されるPVDセラミックス層を成長させる工程と、
を含む機能性複合粒子の製造方法。 - 前記機能性金属粒子は抗菌金属粒子であり、前記抗菌金属粒子はAg金属粒子、Zn金属粒子、Cu金属粒子又はそれらの混合物である請求項8に記載の機能性複合粒子の製造方法。
- 前記機能性金属粒子は成長促進金属粒子であり、前記成長促進金属粒子はCa金属粒子、K金属粒子、Mg金属粒子又はそれらの混合物である請求項8に記載の機能性複合粒子の製造方法。
- 前記PVDセラミックス層は、ZrN、TiN、AlTiN又はAl2O3で構成される生体適合性セラミックス層である請求項8に記載の機能性複合粒子の製造方法。
- 加熱効率を調整することで前記機能性金属粒子の凝縮後の粒子径を変化させる請求項8に記載の機能性複合粒子の製造方法。
- PVDプロセスにより前記PVDセラミックス層を形成する工程は、真空物理気相成長(PVD)プロセス炉へ純度99.999%の窒素ガス又は酸素ガスを流し込み、バイアス電圧0V〜1000Vの条件で、生体適合性セラミックス材料を含むターゲットを開放し、アーク電流を120A〜200Aとし、PVDプロセスにより凝縮状態での前記機能性金属粒子の外面に、前記PVDセラミックス層を成長させることを含む請求項8に記載の機能性複合粒子の製造方法。
- 金属、布地、セラミックス若しくはプラスチックの表面に対するコーティング、又は金属、布地、セラミックス若しくはプラスチックへの埋め込みに用いる請求項1〜7のいずれか一項に記載の機能性複合粒子の用途。
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