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公开(公告)号：US4225467A
公开(公告)日：1980-09-30
申请号：US854966
申请日：1977-11-25
摘要： A neutron absorbing article, preferably in long, thin, flat form, suitable for but not necessarily limited to use in storage racks for spent nuclear fuel at locations between volumes of such stored fuel, to absorb neutrons from said spent fuel and prevent uncontrolled nuclear reaction of the spent fuel material, is composed of finely divided boron carbide particles and a solid, irreversibly cured phenolic polymer, forming a continuous matrix about the boron carbide particles, in such proportions that at least 6% of B.sup.10 from the boron carbide content is present therein. The described articles withstand thermal cycling from repeated spent fuel insertions and removals, withstand radiation from said spent nuclear fuel over long periods of time without losing desirable neutron absorbing and physical properties, are sufficiently chemically inert to water so as to retain neutron absorbing properties if brought into contact with it, are not galvanically corrodible and are sufficiently flexible so as to withstand operational basis earthquake and safe shutdown earthquake seismic events, without loss of neutron absorbing capability and other desirable properties, when installed in storage racks for spent nuclear fuel. The disclosure also relates to a plurality of such neutron absorbing articles in a storage rack for spent nuclear fuel and to a method for the manufacture of the articles.
摘要翻译： 一种中子吸收制品，优选为长而薄的平坦形式，适用于但不一定限于在这种储存燃料的体积之间的位置处用于废核燃料的储存架中，以从所述乏燃料中吸收中子并防止不受控制的核反应 的乏燃料材料由细碎的碳化硼颗粒和固体的不可逆固化的酚醛聚合物组成，其形成了围绕碳化硼颗粒的连续的基体，其比例使得来自碳化硼含量的B10至少为6％ 其中。 所描述的物品耐受重复的乏燃料插入和去除的热循环，在长时间内耐受来自所述废核燃料的辐射，而不失去理想的中子吸收和物理性质，对水充分地具有化学惰性，从而保持中子吸收性能，如果带来 与电极接触时，不会电流腐蚀，并且具有足够的柔性，以便在安装在废核燃料的储存架上时，能够承受操作基础地震和安全停堆地震事件，而不损失中子吸收能力和其他所需性能。 本公开还涉及用于乏核燃料的储存架中的多个这样的中子吸收制品和用于制造制品的方法。
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112.发明授权Heat set and destretched polyester backing material in coated abrasive manufacture 失效涂层磨料制造中的热定型和破坏性聚酯背衬材料
公开(公告)号：US4225321A
公开(公告)日：1980-09-30
申请号：US868235
申请日：1978-01-09
申请人： Henry J. Swiatek
发明人： Henry J. Swiatek
CPC分类号： B24D11/001 , B24D11/08 , Y10T442/2066
摘要： A coated abrasive belt backing material woven from 100% high tenacity polyester staple yarns in a sateen weave is heat set and destretched to a dimensional stability warpwise of less than 6.5% elongation at 170 pounds per linear inch of width tensile, while maintaining its desired width during such heat setting and destretching, cloth finished, coated with maker, abrasive and size, cured and product finished to form endless belts having superior properties of strength, toughness, body retention, pliability and base adhesion.
摘要翻译： 在缎织物中由100％高韧性聚酯短纤维编织的涂覆的砂带背衬材料被热固化并且在170磅/平方英寸的宽度拉伸下，以小于6.5％的伸长率经向扭曲地延伸至尺寸稳定性，同时保持其所需的宽度 在这样的热定型和脱层过程中，布成品，涂层，磨料和尺寸，固化和产品精加工，形成具有优异的强度，韧性，保持力，柔韧性和基底粘附性的环形带。
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公开(公告)号：US4207226A
公开(公告)日：1980-06-10
申请号：US930635
申请日：1978-08-03
申请人： Roger S. Storm
发明人： Roger S. Storm
IPC分类号： C04B35/56 , C04B35/565 , C04B35/632 , C04B35/634 , C04B35/636 , C08L61/06
CPC分类号： C04B35/63408 , C04B35/5611 , C04B35/565 , C04B35/6325 , C04B35/634 , C04B35/63424 , C04B35/63432 , C04B35/63448 , C04B35/6346 , C04B35/63468 , C04B35/63476 , C04B35/6365
摘要： Ceramic compositions that may be injection molded and subsequently sintered are described. The compositions include minor amounts of organo-titanates which materially reduce the viscosity of the compositions. The reduction in viscosity is particularly effective in compositions containing high loadings of silicon carbide as the ceramic material. The organo-titanates found useful are represented by the formula:(R.sub.1 --O).sub.m --Ti--(O--X.sub.z --R.sub.2).sub.nwherein:(a) m is an integer from 1 to 8 andn is an integer from 0 to 4,(b) m+n=4,(c) z is an integer from 0 to 1,(d) R.sub.1 is aliphatic containing 1 and 4 carbon atoms,(e) X is independently selected from the group of phosphite, phosphate, and pyrophosphate.(f) R.sub.2 is aliphatic containing from 8 to 25 carbon atoms.
摘要翻译： 描述可以进行注塑和随后烧结的陶瓷组合物。 组合物包含少量的有效降低组合物粘度的有机钛酸酯。 粘度的降低在含有高含量碳化硅作为陶瓷材料的组合物中特别有效。 发现有用的有机钛酸酯由下式表示：（R1-O）m-Ti-（O-Xz-R2）n其中：（a）m为1至8的整数，n为0至 4，（b）m + n = 4，（c）z是0至1的整数，（d）R1是含有1和4个碳原子的脂族，（e）X独立地选自亚磷酸酯，磷酸酯 和焦磷酸盐。 （f）R 2是含8至25个碳原子的脂族基。
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公开(公告)号：USRE30286E
公开(公告)日：1980-05-27
申请号：US21878
申请日：1979-03-19
申请人： John A. Coppola , Richard H. Smoak
发明人： John A. Coppola , Richard H. Smoak
IPC分类号： C04B35/565 , C04B35/575
CPC分类号： C04B35/565 , C04B35/575
摘要： Disclosure is made of a high-density, high-strength silicon carbide ceramic material that is produced using a silicon carbide powder containing boron or boron-containing compound as a densification additive by the utilization of boron in the sintering atmosphere.
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公开(公告)号：US4179299A
公开(公告)日：1979-12-18
申请号：US24148
申请日：1979-03-26
IPC分类号： C04B35/565 , C04B35/56
CPC分类号： C04B35/565
摘要： Pressureless sintered silicon carbide ceramic bodies, having an equiaxed microstructure and an alpha crystalline habit can be produced by firing shaped bodies, containing finely divided silicon carbide, boron source such as boron carbide, carbon source such as phenolic resin and a temporary binder, at a sintering temperature of from about 1900.degree. C. to about 2250.degree. C., depending on the sintering atmosphere, under conditions such that a coating of carbon source is maintained on the finely divided silicon carbide, and sufficient boron is maintained within the shaped body during firing. Boron can be maintained within the shaped body by various techniques, such as the use of a "seasoned boat" or graphite container for the body being sintered, which has been saturated with boron by exposure to boron at or about the temperature of sintering.There is also disclosed a process for producing a sintered silicon carbide ceramic body, with or without the equiaxed crystal microstructure, from silicon carbide powders of alpha or beta crystal structure, or amorphous noncrystalline silicon carbide, or mixtures thereof.
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116.发明授权Refractory moldable composition containing ceramic fiber and colloidal silica 失效含有陶瓷纤维和胶体二氧化硅的耐火可成型组合物
公开(公告)号：US4174331A
公开(公告)日：1979-11-13
申请号：US656475
申请日：1976-02-09
申请人： Thomas A. Myles
发明人： Thomas A. Myles
IPC分类号： C04B14/38 , C04B16/08 , C04B20/00 , C04B26/02 , C04B26/06 , C04B35/66 , C08L1/04 , C08L1/10 , C08L33/24 , C08L71/02
摘要： A refractory moldable composition which, upon drying, sets up to refractory shapes which are strongly adherent to the molding surfaces and are essentially crack-free, contains about 45 to about 65% of a liquid vehicle, such as water; about 21 to about 26% ceramic fiber; about 7 to about 30% finely divided silica; and sufficient adhesion enhancing agent to impart from about 18 to about 50 grams per square centimeter adherence to steel. The molded composition adheres excellently to molding surfaces and dries to give an essentially crack-free refractory shape, useful as thermal insulation at temperatures up to 1300.degree. C. The composition may optionally include hollow plastic or ceramic spheres.
摘要翻译： 一种耐火可成型组合物，其在干燥后设置为牢固粘附于模制表面并且基本上无裂纹的耐火形状，其含有约45至约65％的液体载体如水; 约21至26％的陶瓷纤维; 约7至约30％的细碎二氧化硅; 以及足够的粘合增强剂，以约18至约50克每平方厘米粘附于钢。 模塑组合物非常优异地粘合到模制表面上并干燥以产生基本上无裂纹的耐火材料形状，其可在高达1300℃的温度下用作绝热。组合物可任选地包括中空塑料或陶瓷球体。
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117.发明授权Apparatus and method for obtaining a shortened blast pattern with a centrifugal throwing wheel 失效用离心式抛丸轮获得缩短的喷砂图案的装置和方法
公开(公告)号：US4164104A
公开(公告)日：1979-08-14
申请号：US846302
申请日：1977-10-28
IPC分类号： B24C5/06
CPC分类号： B24C5/068
摘要： Apparatus and method are provided for producing a blast pattern with a centrifugal throwing wheel for alternatively providing a blast pattern having a conventional length and for providing a blast pattern having a shorter length than heretofore possible with a standard throwing wheel.
摘要翻译： 提供了用于产生具有离心抛掷轮的鼓风模式的装置和方法，用于替代地提供具有常规长度的喷砂图案，并且用于提供具有比迄今为止可能的标准投掷轮更短的长度的喷砂图案。
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公开(公告)号：US4159205A
公开(公告)日：1979-06-26
申请号：US808950
申请日：1977-06-22
IPC分类号： D01F9/08 , C04B35/622 , C01F7/02 , C04B35/10
CPC分类号： C04B35/62236 , C04B35/6225
摘要： A process for the manufacture of an aluminum oxide or zirconium oxide fiber comprising fiberizing a liquid containing lactic acid and an oxidizable compound selected from basic aluminum chloride, zirconium acetate and zirconium oxychloride and the resulting fibers. The liquid optionally also contains colloidal silica.
摘要翻译： 一种制造氧化铝或氧化锆纤维的方法，包括使含有乳酸的液体和选自碱性氯化铝，乙酸锆和氯氧化锆的可氧化化合物纤维化，以及所得纤维。 液体任选地还含有胶体二氧化硅。
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公开(公告)号：US4157898A
公开(公告)日：1979-06-12
申请号：US896269
申请日：1978-04-14
申请人： Thomas B. Walker , Robert J. Seider , Paul Cichy
发明人： Thomas B. Walker , Robert J. Seider , Paul Cichy
CPC分类号： C09K3/1427 , B24D3/285
摘要： A fused abrasive grain, useful for inclusion in coated abrasives and bonded abrasives, consists essentially of alumina; titanium oxide containing from about 0.42 to about 0.84% titaniun, by weight of the abrasive grain, present as a reduced titanium oxide having an average oxidation state lower than in Ti.sub.2 O.sub.3 ; from about 0.05 to about 0.3% by weight carbon; from about 0.02 to about 0.1% by weight Na.sub.2 O; and from 0 to about 0.1% by weight total of calcium and silicon oxides. The grain before roasting has a gain on ignition of from about 0.4 to about 0.7% by weight, and is produced in an electric furnace by fusing high-purity titania, alumina containing Na.sub.2 O as the only significant oxide impurity, and carbon, followed by crushing and roasting the fused grain.
摘要翻译： 可用于包含在涂层磨料和粘结研磨剂中的熔融磨料主要由氧化铝组成; 以磨料颗粒的重量计含有约0.42至约0.84％钛的二氧化钛，其平均氧化态的平均氧化态低于Ti 2 O 3; 约0.05至约0.3重量％的碳; 约0.02至约0.1重量％的Na 2 O; 和0至约0.1重量％的钙和硅氧化物的总量。 焙烧前的谷物的灼烧增益为约0.4〜约0.7重量％，并通过熔融高纯度二氧化钛，含有Na2O作为唯一显着的氧化物杂质的氧化铝和碳，然后在电炉中进行粉碎 并烘烤融合的粮食。
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120.发明授权
公开(公告)号：US4149995A
公开(公告)日：1979-04-17
申请号：US865801
申请日：1977-12-30
申请人： Hari N. Murty
发明人： Hari N. Murty
摘要： Granular activated carbon is manufactured from briquettes of about 1.times. 2" mesh formed from brown coal from which iron material has been extracted and which has a moisture content of about 15% by weight, by crushing and screening the pre-treated coal briquettes to produce 8/30 mesh granules, which are treated by mixing with about 5% by weight of concentrated inorganic acid (H.sub.2 SO.sub.4, H.sub.3 PO.sub.4, or HCl), without the addition of a carbonaceous binder such as coal tar pitch. The so treated granules are ground to form fine powder of more than about 65% by weight -325 mesh powder, more preferably 75 to 85% by weight -325 mesh, which powder has a moisture (including acid) content of about 21% by weight, as a temporary binder, and which powder is compressed into shapes such as pellets of 0.5" diameter and 0.5" long under a pressure of 40,000 to 80,000 psi, and then granulated to obtain 6/20 mesh granules. These granules are devolatilized, without charring, by directly heating to and at a temperature higher than the charring temperature in an oxygen-free atmosphere, and then activated by heating to and at a temperature higher than the devolatilizing temperature in an atmosphere containing a gaseous activating agent. The overall yield of granular activated carbon is not less than about 22% by weight, dry basis, and the activated granules have a surface area of not less than about 900 m.sup.2 /gram, an iodine number of not less than about 900, an ash content of not more than about 6% by weight, an abrasion number of not less than about 70, an apparent density of not less than about 0.48 gram/cc, and a Molasses number of not less than about 200; which properties make them suitable for use in water and waste water treatment and in other applications.
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