公开(公告)号：US5654246A

公开(公告)日：1997-08-05

申请号：US451581

申请日：1995-05-26

申请人： Marc Stevens Newkirk ,  Harry Richard Zwicker ,  Andrew Willard Urquhart ,  John Peter Biel ,  Jack Andrew Kuszyk ,  Craig Barlow Shumaker ,  Harold Daniel Lesher ,  Terry Dennis Claar ,  Michael Kevork Aghajanian

发明人： Marc Stevens Newkirk ,  Harry Richard Zwicker ,  Andrew Willard Urquhart ,  John Peter Biel ,  Jack Andrew Kuszyk ,  Craig Barlow Shumaker ,  Harold Daniel Lesher ,  Terry Dennis Claar ,  Michael Kevork Aghajanian

IPC分类号： C04B35/65 ,  C04B41/87 ,  C04B38/00

CPC分类号： C04B35/652 ,  C04B41/87

摘要： A method of making self-supporting ceramic composite structures having filler embedded therein includes infiltrating a permeable mass of filler with polycrystalline material comprising an oxidation reaction product obtained by oxidation of a parent metal such as aluminum. The self-supporting ceramic composite structure optionally contains therein non-oxidized constituents of the parent metal. The structure is formed by placing a parent metal adjacent to a permeable filler and heating the assembly to melt the parent metal and provide a molten body of parent metal which is contacted with a suitable oxidant. Within a certain temperature region and optionally, aided by one or more dopants in or on the parent metal, molten parent metal will migrate through previously formed oxidation reaction product into contact with the oxidant, causing the oxidation reaction product to grow so as to embed the adjacent filler and provide the composite structure. The parent metal may be provided as a body of metal placed in contact with an exterior surface of the permeable mass. Alternatively, the parent metal may be placed adjacent to the filler material by admixing a plurality of discrete bodies of parent metal (e.g., particulate metal) into the permeable mass. In this embodiment, the growth of oxidation reaction product still embeds the adjacent filler material without substantial change in the size or shape of the permeable mass, but does not result in the creation of voids at the former locations of the bodies of parent metal.

摘要翻译： 制造具有嵌入其中的填料的自支撑陶瓷复合结构的方法包括用包含通过母体金属如铝的氧化获得的氧化反应产物的多晶材料渗透可渗透的填料。 自支撑陶瓷复合结构任选地含有母体金属的非氧化成分。 该结构通过将母体金属放置在可渗透填料附近并加热该组件以熔化母体金属并提供与合适的氧化剂接触的母体金属熔融体而形成。 在一定温度范围内，任选地，由母体金属中或母体金属上的一种或多种掺杂剂辅助，熔融母体金属将迁移通过预先形成的氧化反应产物与氧化剂接触，使氧化反应产物生长，从而嵌入 相邻填料并提供复合结构。 母金属可以设置为与可渗透物质的外表面接触的金属体。 或者，母金属可以通过将多个离散的母体金属（例如，颗粒金属）的主体混合到可渗透物质中而邻近填充材料放置。 在该实施方案中，氧化反应产物的生长仍然嵌入相邻的填充材料，而在渗透性物质的尺寸或形状上没有显着变化，但不会导致在母体金属体的原始位置产生空隙。