JP6885946B2 - 多孔質セラミック粒子および多孔質セラミック構造体 - Google Patents
多孔質セラミック粒子および多孔質セラミック構造体 Download PDFInfo
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- JP6885946B2 JP6885946B2 JP2018529416A JP2018529416A JP6885946B2 JP 6885946 B2 JP6885946 B2 JP 6885946B2 JP 2018529416 A JP2018529416 A JP 2018529416A JP 2018529416 A JP2018529416 A JP 2018529416A JP 6885946 B2 JP6885946 B2 JP 6885946B2
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Description
12 シート
14 多孔質セラミック集合体
16 多孔質セラミック粒子
22 対象物
28 (シートの)法線
61 多孔質部
62 緻密層
161 (多孔質セラミック粒子の)主面
162 (多孔質セラミック粒子の)側面
611 (多孔質部の)主面
612 (多孔質部の)側面
621 (緻密層の)表面
Claims (16)
- 多孔質セラミック粒子であって、
互いに平行な一対の主面を有する板状の多孔質部と、
前記多孔質部よりも低い気孔率を有し、前記多孔質部の前記一対の主面のうち少なくとも一方の主面を被覆する緻密層と、
を備え、
前記多孔質部の表面のうち前記一対の主面を除く部位が、前記緻密層から露出しており、
前記緻密層の厚さが、前記多孔質部の骨格粒子の平均粒径の0.1倍以上かつ10倍以下であることを特徴とする多孔質セラミック粒子。 - 請求項1に記載の多孔質セラミック粒子であって、
前記緻密層が、前記多孔質部の前記一対の主面の双方を被覆することを特徴とする多孔質セラミック粒子。 - 請求項1または2に記載の多孔質セラミック粒子であって、
前記緻密層の厚さが、前記多孔質部の厚さの1%以下であることを特徴とする多孔質セラミック粒子。 - 請求項1ないし3のいずれかに記載の多孔質セラミック粒子であって、
前記緻密層の厚さが、前記多孔質部の平均気孔径の0.05倍以上かつ5倍以下であることを特徴とする多孔質セラミック粒子。 - 請求項1ないし4のいずれかに記載の多孔質セラミック粒子であって、
前記緻密層の厚さが、10nm以上かつ1000nm以下であることを特徴とする多孔質セラミック粒子。 - 請求項1ないし5のいずれかに記載の多孔質セラミック粒子であって、
前記緻密層の表面の算術平均粗さが、50nm以上かつ800nm以下であることを特徴とする多孔質セラミック粒子。 - 請求項1ないし6のいずれかに記載の多孔質セラミック粒子であって、
前記緻密層を構成する材料である緻密層材料が、前記緻密層から前記多孔質部の内部に進出している場合、前記緻密層と前記多孔質部との境界面よりも前記多孔質部側に存在する前記緻密層材料の厚さは、前記緻密層の厚さの10%以下であることを特徴とする多孔質セラミック粒子。 - 多孔質セラミック構造体であって、
シートと、
前記シート上に貼着された多孔質セラミック集合体と、
を備え、
前記多孔質セラミック集合体が、それぞれが請求項1ないし7のいずれかに記載の多孔質セラミック粒子と同様の構造を有する複数の多孔質セラミック粒子を含み、
前記複数の多孔質セラミック粒子の各多孔質セラミック粒子が、前記緻密層から露出する前記多孔質部の側面同士を対向させつつ他の多孔質セラミック粒子と隣接して配置され、前記各多孔質セラミック粒子の一の主面が前記シート上に貼着されることを特徴とする多孔質セラミック構造体。 - 請求項8に記載の多孔質セラミック構造体であって、
前記多孔質セラミック集合体は対象物上に設置される部材であって、
前記多孔質セラミック集合体を上面から見た平面形状は、前記対象物のうち、前記多孔質セラミック集合体が設置される予定の領域を上面から見た平面形状と同じであることを特徴とする多孔質セラミック構造体。 - 請求項8または9に記載の多孔質セラミック構造体であって、
前記多孔質セラミック集合体に含まれる前記複数の多孔質セラミック粒子のうち、上面から見た平面形状が複数の直線で囲まれた多角形状である多孔質セラミック粒子が少なくとも1つ存在することを特徴とする多孔質セラミック構造体。 - 請求項8ないし10のいずれかに記載の多孔質セラミック構造体であって、
前記多孔質セラミック集合体に含まれる前記複数の多孔質セラミック粒子のうち、上面から見た平面形状に曲線を含む多孔質セラミック粒子の割合が50%以下であることを特徴とする多孔質セラミック構造体。 - 請求項8ないし11のいずれかに記載の多孔質セラミック構造体であって、
前記多孔質セラミック集合体は、5つ以上の前記多孔質セラミック粒子がそれぞれ1つの頂点を対峙させて配置された部分を有することを特徴とする多孔質セラミック構造体。 - 請求項8ないし12のいずれかに記載の多孔質セラミック構造体であって、
前記多孔質セラミック集合体において隣接する多孔質セラミック粒子間の隙間が0.1μm以上かつ10μm以下であることを特徴とする多孔質セラミック構造体。 - 請求項8ないし13のいずれかに記載の多孔質セラミック構造体であって、
前記多孔質セラミック集合体において隣接する多孔質セラミック粒子の側面同士が平行に対向する場合、前記隣接する多孔質セラミック粒子の1つの側面の傾斜角は、前記シートの法線に対して45度以下である部分を含むことを特徴とする多孔質セラミック構造体。 - 請求項8ないし14のいずれかに記載の多孔質セラミック構造体であって、
前記多孔質セラミック集合体内での多孔質セラミック粒子の個数密度が異なり、
前記個数密度の最大値の最小値に対する割合が1.2よりも大きいことを特徴とする多孔質セラミック構造体。 - 請求項8ないし15のいずれかに記載の多孔質セラミック構造体であって、
前記複数の多孔質セラミック粒子のそれぞれの平面形状の大きさが異なり、
前記平面形状の大きさの最大値の最小値に対する割合が1.2よりも大きいことを特徴とする多孔質セラミック構造体。
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