Method for forming bodies by reactive infiltration
    5.
    发明授权
    Method for forming bodies by reactive infiltration 失效
    通过反应性渗透形成体的方法

    公开(公告)号:US5520880A

    公开(公告)日:1996-05-28

    申请号:US307649

    申请日:1994-09-19

    摘要: This invention relates to a method for producing a self-supporting body comprising the steps of:(a) forming a permeable mass comprising at least one solid-phase oxidant selected from the group consisting of the halogens, sulphur and its compounds, metals, metal oxides other than the silicates, and metal nitrides other than those of boron and silicon;(b) orienting said permeable mass and a source of said parent metal relative to each other so that formation of said oxidation reaction product will occur into said permeable mass;(c) heating said source of parent metal to a temperature above the melting point of said parent metal but below the melting point of said oxidation reaction product to form a body of molten parent metal;(d) reacting said body of molten parent metal with said at least one solid-phase oxidant at said temperature to permit said oxidant at said temperature to permit said oxidation reaction product to form; and(e) maintaining at least a portion of said at least one oxidation reaction product in contact with and between said molten parent metal and said solid-phase oxidant at said temperature to progressively draw molten parent metal through said oxidation reaction product towards said solid-phase oxidant to permit fresh oxidation reaction product to continue to form at an interface between said solid-phase oxidant and previously formed oxidation reaction product that has infiltrated said permeable mass.

    摘要翻译: PCT No.PCT / US93 / 02582 Sec。 371日期1994年9月19日 102(e)1994年9月19日PCT 1993年3月19日PCT公布。 公开号WO93 / 18877 本发明涉及一种用于生产自支撑体的方法,包括以下步骤:(a)形成可渗透物质,其包含至少一种选自卤素,硫的固相氧化剂 及其化合物,金属,除硅酸盐以外的金属氧化物以及不同于硼和硅的金属氮化物; (b)使所述可渗透物质和所述母体金属源相对于彼此定向,使得所述氧化反应产物的形成将发生在所述可渗透物质中; (c)将所述母体金属源加热到高于所述母体金属的熔点但低于所述氧化反应产物的熔点的温度,以形成熔融母体金属体; (d)在所述温度下使熔融母体金属体与所述至少一种固相氧化剂反应,以允许所述氧化剂在所述温度下使所述氧化反应产物形成; 和(e)在所述温度下保持所述至少一种氧化反应产物的至少一部分与所述熔融母体金属和所述固相氧化剂之间和之间接触并逐渐地将熔融母体金属通过所述氧化反应产物朝向所述固体 - 以允许新鲜氧化反应产物在所述固相氧化剂和已经渗透所述渗透物质的预先形成的氧化反应产物之间的界面处继续形成。

    Method of modifying ceramic composite bodies by a post-treatment process
and articles produced thereby
    8.
    发明授权
    Method of modifying ceramic composite bodies by a post-treatment process and articles produced thereby 失效
    通过后处理工艺改变陶瓷复合体的方法和由此制备的制品

    公开(公告)号:US5162098A

    公开(公告)日:1992-11-10

    申请号:US700349

    申请日:1991-05-07

    摘要: This invention relates generally to a novel method of manufacturing a composite body, such as a ZrB.sub.2 -ZrC-Zr (optional) composite body, by utilizing a post-treatment process and to the novel products made thereby. More particularly, the invention relates to a method of modifying a composite body comprising one or more boron-containing compounds (e.g., a boride or a boride and a carbide) which has been made by the reactive infiltration of a molten parent metal into a bed or mass containing boron carbide, and optionally one or more inert fillers, to form the body.

    摘要翻译: 本发明一般涉及通过利用后处理工艺制造复合体,例如ZrB 2 -ZrC-Zr(任选的)复合体的新方法和由此制备的新产品。 更具体地说,本发明涉及一种修饰包括一种或多种含硼化合物(例如,硼化物或硼化物和碳化物)的复合体的方法,其通过将熔融母体金属的反应性渗入床形成 或含有碳化硼的物质,以及任选的一种或多种惰性填料以形成体。

    Method of producing ceramic composite bodies
    10.
    发明授权
    Method of producing ceramic composite bodies 失效
    生产陶瓷复合体的方法

    公开(公告)号:US5372178A

    公开(公告)日:1994-12-13

    申请号:US823009

    申请日:1992-01-15

    摘要: This invention relates generally to a novel method of preparing self-supporting bodies, and novel products made thereby. In its more specific aspects, this invention relates to a method for producing self-supporting bodies comprising one or more boron-containing compounds (e.g., a boride or a boride and a carbide, etc.) by reactive infiltration of molten parent metal into a preform comprising boron carbide or a boron donor material combined with a carbon donor material and, optionally, one or more inert fillers, to form the body. Specifically, a boron carbide material or combination of a boron donor material and a carbon donor material, and in either case, optionally, one or more inert fillers, are sedimentation cast, spray coated, tapped, slip cast, pressed, etc., onto or into a body and into a particular desired shape.

    摘要翻译: 本发明一般涉及一种制备自支撑体的新方法,以及由此制成的新颖产品。 在其更具体的方面,本发明涉及一种通过将熔融母体金属反应性渗透到一种或多种含硼化合物(例如硼化物或硼化物和碳化物等)中来制备包含一种或多种含硼化合物的自支撑体的方法, 包括碳化硼或与碳供体材料组合的硼供体材料和任选的一种或多种惰性填料以形成所述体。 具体地说,碳化硼材料或硼供体材料和碳供体材料的组合,并且在任一情况下,任选地一种或多种惰性填料是沉淀铸造,喷涂,轻敲,滑模,压制等,到 或进入身体并且变成特定期望的形状。