摘要:
An aluminum nitride ceramic including aluminum nitride grains and grain boundary phases comprises a grain boundary phase-rich layer including more amount of the grain boundary phases in a surface layer of the aluminum nitride ceramic than in an inside of the aluminum nitride ceramic. The grain boundary phases in the grain boundary phase-rich layer include at least one of rare earth element and alkali earth element.
摘要:
The aluminum-nitride-based composite material according to the present invention is an aluminum-nitride-based composite material that is highly pure with the content ratios of transition metals, alkali metals, and boron, respectively as low as 1000 ppm or lower, has AlN and MgO constitutional phases, and additionally contains at least one selected from the group consisting of a rare earth metal oxide, a rare earth metal-aluminum complex oxide, an alkali earth metal-aluminum complex oxide, a rare earth metal oxyfluoride, calcium oxide, and calcium fluoride, wherein the heat conductivity is in the range of 40 to 150 W/mK, the thermal expansion coefficient is in the range of 7.3 to 8.4 ppm/° C., and the volume resistivity is 1×1014 Ω·cm or higher.
摘要:
An electrostatic chuck that is a member for a semiconductor-manufacturing apparatus contains an yttrium oxide material containing first inorganic particles and second inorganic particles. The first inorganic particles form solid solutions in yttrium oxide, can be precipitated from yttrium oxide, and are present in grains of yttrium oxide. The second inorganic particles can form solid solutions in the first inorganic particles, are unlikely to form any solid solution in yttrium oxide, and are present at boundaries between the yttrium oxide grains. The first inorganic particles contain at least one of ZrO2 and HfO2. The second inorganic particles contain at least one selected from the group consisting of MgO, CaO, SrO, and BaO. The yttrium oxide material is produced in such a manner that solid solution particles are prepared by mixing and firing the first and second inorganic particles and are mixed with yttrium oxide and the mixture is fired.
摘要:
A substrate of an electrostatic chuck, which is a member for use in a semiconductor manufacturing apparatus, is formed of an yttrium oxide material that contains yttrium oxide (Y2O3), silicon carbide (SiC), and a compound that contains a rare-earth element (RE), Si, O, and N. The yttrium oxide material contains RE8Si4N4O14 as a compound that contains a rare-earth element (RE), Si, O, and N, wherein RE may be La or Y. Y8Si4N4O14 is produced during a sintering step of a raw material that contains the main component Y2O3 and an accessory component Si3N4. Y8Si4N4O14 and SiC in the yttrium oxide material improve mechanical strength and volume resistivity.
摘要翻译:作为用于半导体制造装置的部件的静电卡盘的基板由含有氧化钇(Y 2 O 3),碳化硅(SiC)的氧化钇材料和含有稀土元素的化合物形成 (RE),Si,O和N.氧化钇材料含有RE8Si4N4O14作为含有稀土元素(RE),Si,O和N的化合物,其中RE可以是La或Y。Y8Si4N4O14在 包含主要成分Y 2 O 3和附属成分Si 3 N 4的原料的烧结工序。 Y8Si4N4O14和SiC在氧化钇材料中提高了机械强度和体积电阻率。
摘要:
There is provided an yttrium oxide-containing material with excellent mechanical characteristics. The yttrium oxide-containing material becomes strong by adding silicon carbide (SiC) and yttrium fluoride (YF3) to yttrium oxide (Y2O3), and yield, handling, reliability can be improved accordingly when this strengthened yttrium oxide-containing material is applied to components of semiconductor manufacturing equipment.
摘要翻译:提供了具有优异机械特性的含氧化钇材料。 通过向氧化钇(Y 2 N 3 O 3)中加入碳化硅(SiC)和氟化钇(YF 3 N 3),使含氧化钇的材料变强。 >),并且当将这种强化的含氧化钇的材料应用于半导体制造设备的部件时,可以相应地提高产量,处理,可靠性。