摘要:
A biomedical member having high strength, high toughness and high hardness and an artificial joint that uses the same are provided. In addition, a biomedical member that exhibits high wear resistance even in in vivo environment and an artificial joint are provided.Such a composite ceramic is used that contains 65% by weight or more Al2O3, 4 to 34% by weight of ZrO2 and 0.1 to 4% by weight of SrO, while Sr forms a solid solution with part of the ZrO2 grains. The composite ceramics further contains TiO2, MgO and SiO2 as sintering additives, while controlling the amounts to 0.20% by weight or more SiO2, 0.22% by weight or more TiO2 and 0.12% by weight or more MgO, and the total amount of SiO2, TiO2 and MgO within a range from 0.6 to 4.5% by weight.
摘要翻译:提供具有高强度,高韧性和高硬度的生物医学部件和使用其的人造关节。 此外,提供即使在体内环境中也显示高耐磨性的人造关节的生物医学部件。 使用这样的复合陶瓷,其含有65重量%以上的Al 2 O 3,4〜34重量%的ZrO 2和0.1〜4重量%的SrO,而Sr与部分ZrO 2晶粒形成固溶体。 复合陶瓷还含有TiO 2,MgO和SiO 2作为烧结添加剂,同时控制0.20重量%以上的SiO 2,0.22重量%以上的TiO 2和0.12重量%以上的MgO,SiO 2的总量, TiO 2和MgO在0.6〜4.5重量%的范围内。
摘要:
A biomedical member having high strength, high toughness and high hardness and an artificial joint that uses the same are provided. In addition, a biomedical member that exhibits high wear resistance even in in vivo environment and an artificial joint are provided.Such a composite ceramic is used that contains 65% by weight or more Al2O3, 4 to 34% by weight of ZrO2 and 0.1 to 4% by weight of SrO, while Sr forms a solid solution with part of the ZrO2 grains. The composite ceramics further contains TiO2, MgO and SiO2 as sintering additives, while controlling the amounts to 0.20% by weight or more SiO2, 0.22% by weight or more TiO2 and 0.12% by weight or more MgO, and the total amount of SiO2, TiO2 and MgO within a range from 0.6 to 4.5% by weight.
摘要:
A composite ceramic of the present invention includes granular alumina particles (A) having an aspect ratio of 3 or less, granular zirconia particles (B) having an aspect ratio of 3 or less, and a columnar crystal (C) having an aspect ratio of 3 or more, the columnar crystal including a complex metal oxide containing an alkaline-earth metal element and aluminum element. The composite ceramic has high flexural strength, toughness, and hardness, and achieves excellent hot-water resistance and high flexural strength after hydrothermal degradation resistance test.
摘要:
Alumina/zirconia ceramics containing Al2O3 in an amount of not less than 65 mass % and ZrO2 in an amount of 4 to 34 mass %, and further containing TiO2, MgO and SiO2. The ceramics effectively suppresses the growth of shape isotropic particles of alumina, suppresses the growth of zirconia particles, and has a high strength and a high hardness. Besides, the ceramics containing SrO features a high fracture toughness.
摘要翻译:含有不少于65质量%的Al 2 O 3和4〜34质量%的ZrO 2的氧化铝/氧化锆陶瓷,还含有TiO 2,MgO和SiO 2。 陶瓷有效抑制氧化铝形状各向同性颗粒的生长,抑制氧化锆颗粒的生长,并具有高强度和高硬度。 此外,含有SrO的陶瓷具有高断裂韧性。
摘要:
Alumina/zirconia ceramics containing Al2O3 in an amount of not less than 65 mass % and ZrO2 in an amount of 4 to 34 mass %, and further containing TiO2, MgO and SiO2. The ceramics effectively suppresses the growth of shape isotropic particles of alumina, suppresses the growth of zirconia particles, and has a high strength and a high hardness. Besides, the ceramics containing SrO features a high fracture toughness.
摘要:
Composite ceramics having a high strength, a high toughness and an excellent abrasion resistance, and a method of producing the same. The composite ceramics comprises 10 to 30 mass % of a zirconia crystal phase including Ce-stabilized zirconia crystal particles which contain CeO2 in an amount of 9 to 12 mol % and Y-stabilized zirconia crystal particles which contain Y2O3 in an amount of 2.8 to 4.5 mol %; and 70 to 90 mass % of an alumina crystal phase, the zirconia crystal phase having an average crystal particle size of not larger than 1 μm.
摘要翻译:具有高强度,高韧性和优异耐磨性的复合陶瓷及其制造方法。 该复合陶瓷包含10〜30质量%的氧化锆结晶相,其含有Ce-N 2 O 3的Ce稳定化氧化锆结晶粒子,其含量为9〜12摩尔%,Y稳定化的氧化锆结晶粒子含有 Y 2 O 3 3,其量为2.8〜4.5摩尔%; 和70〜90质量%的氧化铝结晶相,所述氧化锆结晶相的平均结晶粒径不大于1μm。
摘要:
Composite ceramics having a high strength, a high toughness and an excellent abrasion resistance, and a method of producing the same. The composite ceramics comprises 10 to 30 mass % of a zirconia crystal phase containing 9 to 12 mol % of CeO2 and 2.8 to 4.5 mol % of Y2O3; and 70 to 90 mass % of an alumina crystal phase, the zirconia crystal phase having an average crystal particle size of not larger than 1 μm.
摘要翻译:具有高强度,高韧性和优异耐磨性的复合陶瓷及其制造方法。 复合陶瓷包含10〜30质量%的含有9〜12摩尔%的CeO 2 2和2.8〜4.5摩尔%的Y 2 O 2的氧化锆结晶相, 3 SUB> 和70〜90质量%的氧化铝结晶相,所述氧化锆结晶相的平均结晶粒径不大于1μm。
摘要:
A ceramics substrate for mounting a light-emitting element includes a ceramic sintered body, the ceramic sintered body having a mounting section on which a light-emitting element is mounted, in a surface portion on a mounting section side of the ceramic sintered body, a ratio of crystal grains having a crystal grain size of 0.2 μm to 1.0 μm in equivalent circle diameter being in a range of 45% to 80%, a ratio of crystal gains having a crystal grain size of 2.0 μm to 6.0 μm in equivalent circle diameter being in a range of 5% to 15%, and a ratio of crystal grains having a crystal grain size of more than 6.0 μm in equivalent circle diameter being 2.7% or less.
摘要:
Provided are a zirconia sintered body that has excellent mechanical characteristics, as well as semiconductivity that can allow static electricity to escape at an appropriate rate, and a manufacturing method that can manufacture the same at lower cost than in the past. The zirconia sintered body is made of 66-90 parts by weight of zirconia that contains a stabilizer, and a total of 10-34 parts by weight of iron, chromium and titanium oxides. Of the iron, chromium and titanium oxides, the proportion of iron oxide is 70-99.5 wt %, the proportion of chromium oxide is 0.4-20 wt % and the proportion of titanium oxide is 0.1-10 wt %. The combined proportion of tetragonal and cubic crystals in the zirconia crystal phase is 90% or more and the mean crystal grain size of the zirconia is 0.3-0.5 μm. The mean crystal grain size of the iron, chromium and titanium oxides is 0.5-2.0 μm. It has excellent mechanical characteristics, as well as semiconductivity.
摘要:
A package for a semiconductor device comprising (i) a high dielectric layer composed of an alumina particles, a high permittivity-imparting agent in particles selected from (a) W or Mo, (b) Re and (c) zirconia and a glass plase comprising alumina and at least one component selected from silica, alkaline earth metal components, and rare earth device components present in their grain boundaries, (ii) a pair of electrode layers comprising as a main component a metal selected from W and Mo provided on both sides of the high dielectric layer, and (iii) insulation layers composed of alumina particles and a glass phase composed of alumina and at least one component selected from silica, alkaline earth metal components and rare earth device components, the insulation layers being provided so as to sandwich the electrode layers and the dielectric layer.