摘要:
An aluminum oxide sintered product including a layer phase containing a rare-earth element and fluorine among grains of aluminum oxide serving as a main component, or a phase containing a rare-earth element and fluorine along edges of grains of aluminum oxide serving as a main component. The product includes a phase containing a rare-earth element and a fluorine element among grains of aluminum oxide, the phase not being in the form of localized dots but in the form of line segments, when viewed in an SEM image. The product can be readily adjusted to have a volume resistivity in the range of 1×1013 to 1×1016 Ω·cm, the volume resistivity being calculated from a current value after the lapse of 1 minute from the application of a voltage of 2 kV/mm to the aluminum oxide sintered product at room temperature.
摘要:
An aluminum oxide sintered body of the invention includes: europium and nitrogen; and plate-like crystals having peaks coinciding with EuAl12O19 in an X-ray diffraction profile dispersed over a whole sintered body. Such an aluminum oxide sintered body can be obtained by: forming a mixed powder containing an alumina powder, a europium compound powder and an aluminum nitride powder into a green body having a predetermined shape; and sintering the green body under a non-oxidizing atmosphere.
摘要翻译:本发明的氧化铝烧结体包括:铕和氮; 以及分散在整个烧结体上的X射线衍射图中具有与EuAl 12 O 19重合的峰的板状晶体。 这样的氧化铝烧结体可以通过以下方式获得:将含有氧化铝粉末,铕化合物粉末和氮化铝粉末的混合粉末形成为具有预定形状的生坯体; 并在非氧化气氛下烧结生坯。
摘要:
A method for producing an aluminum nitride sintered product according to the present invention includes the steps of (a) preparing a powder mixture that contains AlN, 2 to 10 parts by weight of Eu2O3 with respect to 100 parts by weight of AlN, Al2O3 such that a molar ratio of Al2O3 to Eu2O3 is 2 to 10, and TiO2 such that a molar ratio of TiO2 to Al2O3 is 0.05 to 1.2, but not Sm; (b) producing a compact from the powder mixture; and (c) firing the compact by subjecting the compact to hot-press firing in a vacuum or in an inert atmosphere.
摘要翻译:根据本发明的制造氮化铝烧结产品的方法包括以下步骤:(a)制备包含AlN的粉末混合物,相对于100重量份的AlN,Al 2 O 3为2至10重量份的Eu 2 O 3,使得 Al2O3与Eu2O3的摩尔比为2〜10,TiO 2与TiO 2的摩尔比为0.05〜1.2,而不是Sm; (b)从粉末混合物制备压块; 和(c)通过使压坯在真空或惰性气氛中热压烧结来烧结压块。