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公开(公告)号:US20110287923A1
公开(公告)日:2011-11-24
申请号:US13000737
申请日:2009-06-23
CPC分类号: C04B35/56 , C04B35/5607 , C04B35/645 , C04B35/6455 , C04B35/65 , C04B35/74 , C04B2235/3839 , C04B2235/6562 , C04B2235/76 , C04B2235/761 , C04B2235/762 , C04B2235/767 , C04B2235/77 , C04B2235/786 , C04B2235/79 , C04B2235/80 , C04B2235/81 , C04B2235/96
摘要: A ceramic material having a high toughness can include carbon and a transition metal. The transition metal can have an elemental body centered cubic structure at room temperature. A substantial amount of the ceramic can be of a rhombohedral ζ phase of the transition metal and carbon. These materials can have a high thermal shock resistance, high fracture toughness, and good high temperature performance. A particulate mixture of a carbon source and a transition metal source can be assembled (12) and reacted (14) under high pressure and high temperature. The transition metal source can include a transition metal of a metal which has an elemental BCC structure at room temperature. The particulate mixture carbon to transition metal ratio is chosen so as to achieve a zeta phase carbide and processing is affected in order to retain the zeta phase at a substantial weight percent of the material (i.e. greater than about 5 wt %). The carbide ceramic can be cooled (16) and depressurized (18) to acquire the ceramic material.
摘要翻译: 具有高韧性的陶瓷材料可以包括碳和过渡金属。 过渡金属在室温下可以具有元体心立方结构。 大量的陶瓷可以是过渡金属和碳的菱形ζ相。 这些材料可以具有高耐热冲击性,高断裂韧性和良好的高温性能。 碳源和过渡金属源的颗粒混合物可以在高压和高温下组装(12)并反应(14)。 过渡金属源可以包括在室温下具有元素BCC结构的金属的过渡金属。 选择颗粒状混合物碳与过渡金属的比率以达到ζ相碳化物并且影响加工以保持ζ相在材料的相当重量百分比(即大于约5重量%)。 碳化物陶瓷可以被冷却(16)并减压(18)以获得陶瓷材料。
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公开(公告)号:US08685874B2
公开(公告)日:2014-04-01
申请号:US13000737
申请日:2009-06-23
CPC分类号: C04B35/56 , C04B35/5607 , C04B35/645 , C04B35/6455 , C04B35/65 , C04B35/74 , C04B2235/3839 , C04B2235/6562 , C04B2235/76 , C04B2235/761 , C04B2235/762 , C04B2235/767 , C04B2235/77 , C04B2235/786 , C04B2235/79 , C04B2235/80 , C04B2235/81 , C04B2235/96
摘要: A ceramic material having a high toughness can include carbon and a transition metal. The transition metal can have an elemental body centered cubic structure at room temperature. A substantial amount of the ceramic can be of a rhombohedral ζ phase of the transition metal and carbon. These materials can have a high thermal shock resistance, high fracture toughness, and good high temperature performance. A particulate mixture of a carbon source and a transition metal source can be assembled (12) and reacted (14) under high pressure and high temperature. The transition metal source can include a transition metal of a metal which has an elemental BCC structure at room temperature. The particulate mixture carbon to transition metal ratio is chosen so as to achieve a zeta phase carbide and processing is affected in order to retain the zeta phase at a substantial weight percent of the material (i.e. greater than about 5 wt %). The carbide ceramic can be cooled (16) and depressurized (18) to acquire the ceramic material.
摘要翻译: 具有高韧性的陶瓷材料可以包括碳和过渡金属。 过渡金属在室温下可以具有元体心立方结构。 大量的陶瓷可以是过渡金属和碳的菱形ζ相。 这些材料可以具有高耐热冲击性,高断裂韧性和良好的高温性能。 碳源和过渡金属源的颗粒混合物可以在高压和高温下组装(12)并反应(14)。 过渡金属源可以包括在室温下具有元素BCC结构的金属的过渡金属。 选择颗粒状混合物碳与过渡金属的比率以达到ζ相碳化物并且影响加工以保持ζ相在材料的相当重量百分比(即大于约5重量%)。 碳化物陶瓷可以被冷却(16)并减压(18)以获得陶瓷材料。
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