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公开(公告)号：EP0219933A3
公开(公告)日：1988-11-17
申请号：EP86305906
申请日：1986-07-31
CPC分类号： H01L23/15 , C04B35/565 , H01L2924/0002 , H01L2924/00
摘要： Sintered silicon carbide body having a D.C. electrical resistivity of at least 10 8 Ohm cm at 25°C, a density of at least 2.95 g/cm 3 is formed upon sintering in a nitrogenous atmosphere at a temperature of about 2250°C or greater, a shaped body composed essentially of carbon or carbon source material in amount sufficient to provide up to 2.5 percent uncombined carbon; from about 0.4 to about 2.0 percent boron carbide; up to 25 percent of temporary binder and a balance of silicon carbide which is predominately alpha-phase. The shaped body additionally include other sintering aids such as Bn or A1 without destruction of desired high electrical resistivity.
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公开(公告)号：EP0161814A3
公开(公告)日：1988-09-07
申请号：EP85302635
申请日：1985-04-15
IPC分类号： B24C03/30
摘要： Workpieces such as sand-casted automobile engine blocks are cleaned by advancing a series of such workpieces axially into one end of an elongate barrel that holds the workpieces and rotates or tumbles them in the path of impinging streams of particles. The workpieces are advanced from one end of the barrel to the other by oscillating the barrel along the longitudinal axis of the barrel. By this technique, workpieces can be advanced through the barrel without the need to push the workpieces against each other, or without the need to provide workpiece-engaging and advancing mechanisms.
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公开(公告)号：EP0201178A3
公开(公告)日：1988-03-16
申请号：EP86302204
申请日：1986-03-25
CPC分类号： C04B35/65 , C04B35/565 , C04B35/64 , H05B7/00 , H05H1/44
摘要： A furnace (10) for the sintering of refractory or ceramic materials using plasma heated gases. The furnace comprises a sintering chamber (12) with strategic positioning of the plasma torch inlets (14 and 14') and exhaust outlet (16), and means for controlling the furnace temperature during sintering so that the article being sintered does not decompose. Means for controlling the furnace temperature during sintering include: 1) Tangential injection of a secondary colder gas stream into the hot primary plasma gas stream; 2) Utilisation of a plasma torch or torches which can be temperature controlled to achieve stable and lower plasma gas temperatures; and 3) Introduction of a secondary cooler gas directly into the furnace sintering chamber.
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公开(公告)号：EP0197702A3
公开(公告)日：1987-01-28
申请号：EP86302205
申请日：1986-03-25
CPC分类号： C04B35/64 , C04B35/565
摘要： A process for the sintering of silicon carbide refractory or ceramic articles using plasma arc gases. In the process of the invention, a formed silicon carbide article is heated in a plasma fired furnace to a sintering temperature of between 2000°C - 2500°C at a heating rate of 300°C/hr - 2000°C/hr, and held at the sintering temperature for 0.1 - 2 hours. The enthalpy of the plasma gas is 2000 BTU/Ib - 4000 BTU/ib (4652 kJ/kg - 9304 kJ/kg), when nitrogen is used as the plasma gas. The total cycle time for the process, including cooling and loading, is 1.5 - 20 hours. Silicon carbide articles, produced in accordance with the invention, have high strength, high density, high corrosion resistance and high dimensional stability.
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公开(公告)号：EP0050117B1
公开(公告)日：1985-06-26
申请号：EP81900346.8
申请日：1980-04-17
摘要： A ceramic turbine wheel (1), especially such a wheel intended for an exhaust gas driven turbine of a turbocharger for motor vehicles, comprises a body portion (3), blades (2) and hub portion (4). The body portion ("4" to -3-), and optionally the hub portion ("3" to -4-) as well, are provided with hollow central cores (5, 6).
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公开(公告)号：EP0109741A3
公开(公告)日：1985-06-19
申请号：EP83305664
申请日：1983-09-23
发明人： Seider, Robert J.
CPC分类号： C04B35/653 , C04B35/107 , C09K3/1427
摘要： This process produces a high-purity, low-porosity, alpha-alumina product containing no more than 0.05 percent by weight soda, which is useful in the production of abrasives, refractories and electrical insulators by fusing Bayer alumina together with small amounts of carbon and high-purity titanium dioxide, Ti0 2 , or zirconium dioxide, ZrO 2 .
摘要翻译： 该方法产生高纯度，低孔隙率的α-氧化铝产品，其含有不超过0.05重量％的苏打，其可用于生产磨料，耐火材料和电绝缘体，通过将拜耳氧化铝与少量碳一起熔化，以及 高纯二氧化钛，二氧化钛或二氧化锆，ZrO2。
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7.发明公开A sintering or reaction sintering process for ceramic or refractory materials using plasma arc gases 失效一种用于通过等离子电弧气体的手段陶瓷或耐火材料的烧结或反应烧结过程。
公开(公告)号：EP0135862A2
公开(公告)日：1985-04-03
申请号：EP84110525.7
申请日：1984-09-04
摘要： A process for sintering or reaction sintering ceramic or refractory materials with hot plasma gases. The hot plasma gases are produced by injecting a combined primary plasma arc with a secondary gas stream directly into a reaction furnace. The secondary gas stream is tangentially injected into the primary plasma arc gas stream to mix the gases for the required sintering temperature at the highest energy efficiency. The plasma torches are positioned in the furnace ports so that the plasma gas flow is perpendicular to the furnace process gas flow. This process is inexpensive and efficient and results in a superior quality sintered product. It may be adapted to continuous or periodic kilns to achieve a high furnace productivity.
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8.发明授权PROCESS FOR MANUFACTURING BORON NITRIDE FIBER BATTS USING A SPINNER 失效使用旋转器制造BORON NITRIDE FIBER BATTS的方法
公开(公告)号：EP0048277B1
公开(公告)日：1984-12-12
申请号：EP81901080.2
申请日：1981-03-27
发明人： TWOREK, John L. , RIGNEL, Gordon R.
IPC分类号： C03B37/04 , C01B21/064
CPC分类号： H01M2/145 , C01B21/064 , C01P2004/10 , C03B37/04 , C04B35/62227 , D04H1/56 , H01M2/1613 , H01M2300/0048 , Y10T428/2916
摘要： Process for producing non-woven, yet internally cohesive, boron nitride fiber batts, suitable for use as an electric cell separator in a lithium-sulfide battery. Molten boron oxide (15) is centrifugally spun into strands (23) and attenuated by relative humidity. The fibers (27) are funnelled into a chamber (31) and subjected to a turbulent air flow, which causes random orientation and intertwining of the fibers (27), resulting in multiple mechanical bonds thereamong. The compacted boron oxide fiber bundle thus produced is heated in an anhydrous ammonia atmoshpere to convert boron oxide in the fibers (27) into boron nitride (BN).
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9.发明授权
公开(公告)号：EP0045134B1
公开(公告)日：1984-04-25
申请号：EP81302875.0
申请日：1981-06-25
发明人： Frechette, Francis Joseph , Mc Dowell, Douglas James , Kasprzyk, Martin Richard , Zanghi, Joseph Salvatore
CPC分类号： C22C32/0063 , C04B35/573 , C04B35/71 , C22C29/065
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公开(公告)号：EP0010707B1
公开(公告)日：1983-06-01
申请号：EP79104069.4
申请日：1979-10-20
CPC分类号： B21B3/003 , B21B2003/005 , B22D11/145
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