JP6925271B2 - セラミック複合材料の製造方法 - Google Patents
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Description
−金属酸化物又は半金属ベースのマトリクスであって、前記マトリクスが、(焼結後に)光が通過することを可能にするのに相応しく、前記マトリクスが晒される圧力に依存する緻密化温度を有する、金属酸化物又は半金属ベースのマトリクスと、
−所定の劣化温度を有し、前記マトリクスに分散される無機顔料であって、前記所定の劣化温度を超える温度で前記無機顔料が劣化する、無機顔料と、
を混ぜ合わせる複合材料の製造方法であり、
前記マトリクスの緻密化温度が、80MPa未満の少なくとも一圧力範囲において、特に大気圧において前記無機顔料の劣化温度を超え、
前記方法が、
(a)粉末形態の前記無機顔料を粉末形態の前記マトリクスと混合する段階と、
(b)圧力下における前記マトリクスの緻密化温度が、前記無機顔料の劣化温度未満であるようにするために十分なある焼結温度及び80MPa以上の圧力下で前記粉末の混合物を焼結する段階であって、前記焼結温度が、前記マトリクスの緻密化温度以上であり、前記無機顔料の劣化温度以下である段階と、
を含む、複合材料の製造方法に関する。
−金属酸化物又は半金属ベースのマトリクスであって、前記マトリクスが、焼結後に光が通過することを可能にするのに相応しく、前記マトリクスが晒される圧力に依存する緻密化温度を有する、金属酸化物又は半金属ベースのマトリクスと、
−所定の劣化温度を有し、前記マトリクスに分散される無機顔料であって、前記所定の劣化温度を超える温度で前記無機顔料が劣化する、無機顔料と、
を混ぜ合わせる複合材料の製造方法であり、
前記マトリクスの緻密化温度が、100MPa未満の少なくとも一圧力範囲において、特に大気圧において前記無機顔料の劣化温度を超え、
前記方法が、
(a)粉末形態の前記無機顔料を粉末形態の前記マトリクスと混合する段階と、
(b)圧力下における前記マトリクスの緻密化温度が、前記無機顔料の劣化温度未満であるようにするために十分なある焼結温度及び100MPa以上の圧力下で前記粉末の混合物を焼結する段階であって、前記焼結温度が、前記マトリクスの緻密化温度以上であり、前記無機顔料の劣化温度未満である段階と、
を含む、複合材料の製造方法に関する。
無機顔料;及び
金属酸化物又は半金属ベースのマトリクスであって、前記マトリクスが、光が通過することを可能にするのに相応しく、圧力下において前記無機顔料の劣化温度未満の緻密化温度を有する、金属酸化物又は半金属ベースのマトリクス;
を含む複合材料である。
無機顔料;及び
金属酸化物又は半金属ベースのマトリクスであって、マトリクスが、光が通過することを可能にするのに相応しく、圧力下において無機顔料の劣化温度未満の緻密化温度を有する、金属酸化物又は半金属ベースのマトリクス;
を含む複合材料である。
(Co、Zn)Al2O4;
(Zn、Co)(Cr、Al)2O4;
Co(Al、Cr)2O4;
CoAl2O4/Co2SnO4。
マイカ、例えば白雲母又は黒雲母;
アルミナ、Al2O3;
ジルコニウム酸化物、ZrO2;
二酸化チタン、TiO2
から選択される材料で製造され得る。
KAl2(AlSi3O10)(OH)2;
TiO2;
SiO2;
ZnO
を含み得る。
−それらの酸化物が一般的に両性である(それらの金属がいくらか塩基性であり、それらの非金属がいくらか酸性である);
−それらが、半導体のように振る舞う(特に、ホウ素、シリコン、ゲルマニウム)。
ホウ素 5B
シリコン 14Si
ゲルマニウム 32Ge
ヒ素 33As
アンチモン 51Sb
テルル 52Te
アスタチン 85At。
(a)型14内で粉末形態の無機顔料10と粉末形態のマトリクス12を混合する段階と;
(b)無機顔料10の劣化温度未満以下で、且つ、少なくともマトリクスの緻密化温度に等しい焼結温度で焼結が起こるようにしながら、圧力下におけるマトリクス12の緻密化温度が無機顔料10の劣化温度未満のままであるように十分な圧力の下でこれらの粉末の混合物を焼結する段階と;
(c)型14から複合材料16を取り出す段階と、
を含む。
0.2μmの粒径、10ppmのFe、Ca及びNa不純物、並びに、20ppmのSi不純物を有するアルミン酸マグネシウムスピネル(MgAl2O4)粉末が使用され、それは、例えば、製品番号S30CRでBaikowskiによって製造される粉末である。
200MPaを超える圧力下で1200℃での焼結の後に、平衡であり又は一軸性であるイットリウム安定化ジルコニウムが使用され、それは、透明又は半透明のジルコニウムを得ることをもたらし得る。
12 マトリクス
14 型
16 複合材料
Claims (18)
- −金属酸化物又は半金属ベースのマトリクス(12)であって、前記マトリクス(12)が、焼結後に光が通過することを可能にするのに相応しく、前記マトリクスが晒される圧力に依存する緻密化温度を有する、金属酸化物又は半金属ベースのマトリクス(12)と、
−所定の劣化温度を有し、前記マトリクスに分散される無機顔料(10)であって、前記所定の劣化温度を超える温度で前記無機顔料が劣化する、無機顔料(10)と、
を混ぜ合わせる複合材料(16)の製造方法であり、
前記マトリクスの緻密化温度が、80MPa未満の少なくとも一圧力範囲において前記無機顔料の劣化温度を超え、
前記方法が、
(a)粉末形態の前記無機顔料(10)を粉末形態の前記マトリクス(12)と混合する段階と、
(b)圧力下における前記マトリクス(12)の緻密化温度が、前記無機顔料(10)の劣化温度未満であるようにするために十分なある焼結温度及び80MPa以上の前記圧力下で前記粉末の混合物を焼結する段階であって、前記焼結温度が、前記マトリクスの緻密化温度以上であり、前記無機顔料の劣化温度未満である段階と、
を含む、複合材料(16)の製造方法。 - 前記無機顔料(10)が、0.2μmから10μmの範囲の平均直径を有する、請求項1に記載の方法。
- 焼結中に印加される前記圧力下における前記マトリクス(12)の緻密化温度が、1300℃未満である、請求項1又は2に記載の方法。
- 前記無機顔料(10)が、前記複合材料(16)の2%から50%の範囲で含まれる前記複合材料の体積割合を示す、請求項1から3の何れか一項に記載の方法。
- 前記無機顔料(10)が、アルミン酸コバルトCoAl2O4に基づく、請求項1から4の何れか一項に記載の方法。
- 前記無機顔料(10)が、各々がコア及び前記コアを囲う着色されたコーティングを含む離散粒子の形態である、請求項1から5の何れか一項に記載の方法。
- 前記着色されたコーティングが、鉄、クロム、アルミニウム、チタン、シリコン、亜鉛、ニッケル、コバルト、カドミウム、銅、バナジウム、ビスマス及び/又はマンガンを含む酸化物である、請求項6に記載の方法。
- 前記無機顔料(10)のコアが、光が通過することを可能にするのに相応しい、請求項6又は7に記載の方法。
- 前記無機顔料(10)のコアが、マイカ、アルミナ、ジルコニウム及びチタン酸化物から選択される材料で作られる、請求項8に記載の方法。
- 前記着色されたコーティングの化学式が、KAl2(AlSi3O10)(OH)2である、請求項6から9の何れか一項に記載の方法。
- 前記マトリクスが、アルミン酸マグネシウムスピネルMgAl2O4に基づく、請求項1から10の何れか一項に記載の方法。
- 前記マトリクスが、イットリウムで安定化されたジルコニウムに基づく、請求項1から10の何れか一項に記載の方法。
- 焼結中に印加される前記圧力が、少なくとも200MPaである、請求項12に記載の方法。
- 前記無機顔料(10)の色が、鮮赤色である、請求項1から13の何れか一項に記載の方法。
- 前記無機顔料(10)が発光性である、請求項1から4の何れか一項に記載の方法。
- 前記無機顔料(10)が、希土類アルミン酸塩及び/又は希土類ケイ酸塩を含む、請求項15に記載の方法。
- 前記無機顔料(10)が、ユーロピウムがドーピングされたアルミン酸ストロンチウムに基づく、請求項16に記載の方法。
- 焼結中に印加される前記圧力が、少なくとも600MPaである、請求項15から17の何れか一項に記載の方法。
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