摘要:
Disclosed is an aluminum nitride sintered body comprising aluminum nitride and a sintering aid, wherein the sintering aid is composed mainly of at least one component selected, as the oxide, from the group consisting of Yb.sub.2 O.sub.3 and Er.sub.2 O.sub.3, and the sintered body contains up to 0.5% by weight of Yb and/or Er as the metal and has a density of 3.2 to 3.3 g/cm.sup.3 and a heat conductivity of at least 170 W/m.multidot.k.If a CaO component is incorporated as the second sintering aid in an amount of up to 0.1% by weight, the heat conductivity is further increased.
摘要翻译:公开了一种包含氮化铝和烧结助剂的氮化铝烧结体,其中所述烧结助剂主要由至少一种选自由Yb 2 O 3和Er 2 O 3组成的组中选择的组分组成,并且所述烧结体含有至多0.5 重量百分比的Yb和/或Er作为金属,并且具有3.2至3.3g / cm 3的密度和至少170W / m×K的导热率。 如果以高达0.1重量%的量掺入CaO成分作为第二烧结助剂,则导热率进一步提高。
摘要:
A silicon nitride sintered material includes a silicon nitride crystal and a grain boundary layer that contains at least two of a first metal silicide (a metal silicide having, as a first metal element, at least one selected from the group consisting of Fe, Cr, Mn and Cu), a second metal silicide (a metal silicide having, as a second metal element, at least one of W or Mo) and a third metal silicide (a metal silicide having a plurality of metal elements including the first metal element and the second metal element), wherein the grain boundary layer has neighboring phase where at least two of the first through third metal silicides exist in contact with each other.
摘要:
The present inventions provides a dielectric ceramic comprising an oxide containing, as a metal element, at least a rare earth element (Ln), Al, M (M is Ca and/or Sr) and Ti, and at least part of the oxide of Al being present as a crystal phase of &bgr;-Al2O3 and/or &thgr;-Al2O3, thereby having a high &egr; r, high Q value and a small temperature coefficient of resonance frequency in a high frequency region.
摘要翻译:本发明提供了一种包含氧化物的介电陶瓷,该氧化物含有至少一种稀土元素(Ln),Al,M(M是Ca和/或Sr)和Ti作为金属元素,并且至少部分氧化物 Al作为β-Al 2 O 3和/或θ-Al 2 O 3的结晶相存在,因此在高频区域具有高εr,高Q值和较小的共振频率温度系数。
摘要:
Disclosed is a corrosion resistant member comprising a sintered material having an α-Al2O3 crystal and an YAG (yttrium-aluminum-garnet) crystal. The corrosion resistant member contains metal elements, 70 to 98% by mass (inclusive) of Al in terms of Al2O3 and 2 to 30% by mass of Y in terms of Y2O3. The corrosion resistant member has a peak intensity ratio I116/I104 within the range from 0.94 to 1.98, preferably. 2.21 or higher, wherein I116 and I104 represent peak intensities attributed to the (116) face and the (104) face, respectively, of an α-Al2O3 crystal as measured by X-ray diffractometry on its surface layer.
摘要翻译:公开了一种耐腐蚀构件,其包括具有α-Al 2 O 3结晶和YAG(钇 - 铝 - 石榴石)晶体的烧结材料。 耐腐蚀构件包含以Al 2 O 3 3为基准含有70〜98质量%(以下)Al的金属元素和2〜30质量%的Y 术语Y 2 O 3 3。 耐腐蚀构件的峰强度比I> 116 / I×104在0.94至1.98的范围内,优选地。 2.21或更高,其中I 116和I 104分别表示归因于α-Al
摘要:
A gas-insulated switchgear is miniaturized and bus-bars connected to bushings are simplified in configuration. A distance L between outer peripheries of a first vacuum interrupter 12 and a second vacuum interrupter 13 is established to be smaller than an external diameter D of the vacuum interrupters 12 to 14, and insulating barriers 28 to 30 are installed between the first vacuum interrupter 12 and the second vacuum interrupter 13, between the first vacuum interrupter 12 and a hermetically sealed container 11, between the second vacuum interrupter 13 and the hermetically sealed container 11, and between the first and second vacuum interrupters 12 and 13 and the third vacuum interrupter 14.
摘要:
A silicon nitride sintered material includes a silicon nitride crystal and a grain boundary layer that contains at least two of a first metal silicide (a metal silicide having, as a first metal element, at least one selected from the group consisting of Fe, Cr, Mn and Cu), a second metal silicide (a metal silicide having, as a second metal element, at least one of W or Mo) and a third metal silicide (a metal silicide having a plurality of metal elements including the first metal element and the second metal element), wherein the grain boundary layer has neighboring phase where at least two of the first through third metal silicides exist in contact with each other.
摘要:
There is provided a dielectric ceramic composition containing metal elements Ca, Ti, La, Zn and M which is at least one metal element selected from the group consisting of W, Ni, Co, Zr, Sn, Mn and Cu, and represented on a molar fraction basis by the following composition formula:aCaO.multidot.bTiO.sub.2 .multidot.cLa.sub.2 O.sub.3 .multidot.dZnO.multidot.eMO.sub.xwherein 1.ltoreq.x.ltoreq.3, and a to e are molar fractions which are each set within a predetermined range. The composition has a high dielectric constant, a high Q value and a stably low resonant frequency temperature coefficient .tau.f.
摘要:
A dielectric ceramic composition for high-frequency applications comprising a composite oxide containing at least Ba, Zn and W as metal elements. When the composition formula of the composite oxide is expressed in the form of molar ratios of the metal oxides, the molar ratios of the metal oxides lie within particular ranges. The ceramic composition exhibits a high dielectric constant and a large Q-value in high-frequency regions.
摘要:
Disclosed is a corrosion resistant member comprising a sintered material having an α-Al2O3 crystal and an YAG (yttrium-aluminum-garnet) crystal. The corrosion resistant member contains metal elements, 70 to 98% by mass (inclusive) of Al in terms of Al2O3 and 2 to 30% by mass of Y in terms of Y2O3. The corrosion resistant member has a peak intensity ratio I116/I104 within the range from 0.94 to 1.98, preferably. 2.21 or higher, wherein I116 and I104 represent peak intensities attributed to the (116) face and the (104) face, respectively, of an α-Al2O3 crystal as measured by X-ray diffractometry on its surface layer.
摘要翻译:公开了一种耐腐蚀构件,其包括具有α-Al 2 O 3晶体和YAG(钇 - 铝 - 石榴石)晶体的烧结材料。 耐腐蚀性构件含有以Al2O3计为70〜98质量%的Al,以Y 2 O 3换算为2〜30质量%的Y的金属元素。 耐腐蚀构件的峰强度比I116 / I104优选为0.94〜1.98。 2.21或更高,其中I116和I104分别表示通过其表面层上的X射线衍射法测量的α-Al 2 O 3晶体的(116)面和(104)面的峰强度。
摘要:
A mounting substrate configured to mount a functional element thereon is provided. The mounting substrate includes an insulating base having a flat surface portion and a bank portion protruding from the flat surface portion and dividing the flat surface portion into a plurality of regions; and a conductor layer configured to electrically connect the functional element thereto. The conductor layer is adhered from the flat surface portion to a side surface of the bank portion on the base, and the regions divided by the bank portion are filled with the conductor layer.