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    • 8. 发明授权
    • Method for forming bodies by reactive infiltration
    • 通过反应性渗透形成体的方法
    • US5520880A
    • 1996-05-28
    • US307649
    • 1994-09-19
    • William B. JohnsonEugene S. ParkGerhard H. SchirokyDanny R. WhiteTerry D. Claar
    • William B. JohnsonEugene S. ParkGerhard H. SchirokyDanny R. WhiteTerry D. Claar
    • B22F3/10C04B35/65C04B41/45C04B41/50C22C1/10B22F7/00
    • C04B41/009C04B35/652C04B41/4556C04B41/5071C22C1/1036
    • 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.
    • 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。