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公开(公告)号：US4853350A
公开(公告)日：1989-08-01
申请号：US167178
申请日：1988-03-11
申请人： Shih-Lu Chen , Kishor P. Gadkaree , Joseph F. Mash
发明人： Shih-Lu Chen , Kishor P. Gadkaree , Joseph F. Mash
CPC分类号： C03C14/00 , C03C10/0036 , C03C10/0045 , C03C2214/06 , C03C2214/20
摘要： Whisker-reinforced ceramic matrix composites comprising a principal crystal phase selected from the group of anorthite, barium-stuffed cordierite, and mixed cordierite/anorthite are prepared by extrusion of extrudable ceramic batches comprising an extrusion vehicle and a solids component consisting essentially of inorganic whiskers and powdered glass, the glass being a thermally crystallizable glass containing an internal nucleant and capable of being consolidated at ambient pressures or above to a dense consolidated preform which may be converted to a substantially glass-free whisker-reinforced ceramic matrix composite by thermal treatment.
摘要翻译： 包括选自钙长石，钡堇青石和混合堇青石/钙长石的主晶相的晶须增强陶瓷基复合材料通过挤出可挤出的陶瓷批料制备，所述可挤出陶瓷批料包含挤出载体和基本上由无机晶须组成的固体组分， 该玻璃是含有内部成核剂并且能够在环境压力或更高温度下固结到致密的固化预成型件的可热结晶玻璃，其可以通过热处理转化为基本上无玻璃的晶须强化陶瓷基质复合材料。
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2.发明授权
公开(公告)号：US4776866A
公开(公告)日：1988-10-11
申请号：US42114
申请日：1987-04-23
申请人： Shih-Lu Chen , Kishor P. Gadkaree , Joseph F. Mach
发明人： Shih-Lu Chen , Kishor P. Gadkaree , Joseph F. Mach
CPC分类号： C03C10/0045 , C03C10/0036 , C03C14/00 , C03C2214/06 , C03C2214/20
摘要： Whisker-reinforced ceramic matrix composites comprising a principal crystal phase selected from the group of anorthite, barium-stuffed cordierite, and mixed cordierite/anorthite are prepared by extrusion of extrudable ceramic batches comprising an extrusion vehicle and a solids component consisting essentially of inorganic whiskers and powdered glass, the glass being a thermally crystallizable glass containing an internal nucleant and capable of being consolidated at ambient pressures or above to a dense consolidated preform which may be converted to a substantially glass-free whisker-reinforced ceramic matrix composite by thermal treatment.
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3.发明授权
公开(公告)号：US3974246A
公开(公告)日：1976-08-10
申请号：US441130
申请日：1974-02-11
申请人： Shih-Lu Chen , James A. Murphy
发明人： Shih-Lu Chen , James A. Murphy
CPC分类号： H01F10/20 , Y10S264/58
摘要： A method of improving the magnetic properties of cobalt substituted magnetite by magnetizing the material to the saturation level in the desired direction, and then removing the magnetizing field. The material will retain a level of magnetization normally referred to as the remanent state of magnetization or simply remanence. The magnetized material is then subjected to a heat treatment to anneal the material. The above process significantly improves coercivity, hysteresis loop squareness ratio, and resistance to remanence loss due to external forces.
摘要翻译： 通过将材料磁化到期望方向的饱和水平，然后去除磁化场，来改善钴取代的磁铁矿的磁性能的方法。 该材料将保持通常称为磁化的剩余状态或简单的剩磁的磁化水平。 然后对磁化材料进行热处理以使材料退火。 上述过程显着提高了矫顽力，磁滞回线矩形比，以及由外力引起的对剩磁损失的抵抗力。
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公开(公告)号：US3996395A
公开(公告)日：1976-12-07
申请号：US257336
申请日：1972-05-26
申请人： Shih-Lu Chen , James A. Murphy
发明人： Shih-Lu Chen , James A. Murphy
CPC分类号： H01F10/20 , G11B5/70647 , G11B5/70652 , G11B5/70694
摘要： A method of increasing the coercivity of a magnetic device having a magnetite film reduced from alpha ferric oxide. The alpha ferric oxide film is reduced to magnetite by subjecting it to a temperature greater than 400.degree. C in a reducing atmosphere. The temperature of the film is then changed to between about 150.degree. and 300.degree. C, and the reducing atmosphere is replaced by an oxidizing atmosphere. The film is subjected to the oxidizing atmosphere while the temperature is held between 150.degree. and 300.degree. C, thus causing the magnetite film to become partially oxidized to form a solid solution of magnetite and gamma ferric oxide as represented by the formula, (1-x)Fe.sub.3 O.sub.4 .sup.. xFe.sub.2 O.sub.3, where x is between 0.49 and 0.85.
摘要翻译： 提高具有从α氧化铁还原的磁铁矿膜的磁性装置的矫顽力的方法。 通过在还原气氛中使其处于大于400℃的温度，将α氧化铁膜还原成磁铁矿。 然后将膜的温度改变为约150℃至300℃，并且还原气氛被氧化气氛代替。 在温度保持在150〜300℃之间的同时，对该膜进行氧化气氛，使磁铁矿薄膜部分氧化，形成如下式所示的磁铁矿和γ型氧化铁的固溶体（1- x）Fe 3 O 4。 xFe 2 O 3，其中x在0.49和0.85之间。
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