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    • 1. 发明授权
    • Ceramic shell mold for investment casting and method of making the same
    • 陶瓷壳模具用于熔模铸造及其制作方法
    • US4966225A
    • 1990-10-30
    • US512502
    • 1990-04-20
    • Paul R. JohnsonEliot S. Lassow
    • Paul R. JohnsonEliot S. Lassow
    • B22C9/06
    • B22C9/061
    • A ceramic shell mold and method of making the same. The ceramic shell mold includes a facecoat layer comprised of a first ceramic material. A plurality of alternating layers are formed overlaying the facecoat layer. The alternating layers are comprised of a second ceramic material and a third ceramic material, the third ceramic material having thermophysical properties different than the second ceramic material. The second ceramic material and the third ceramic material are preferably a zircon-based material and an alumina-based material, respectively. The resultant ceramic shell mold has a greater high temperature creep resistance than a shell mold formed solely from the second ceramic material or solely from the third ceramic material.
    • 陶瓷壳模具及其制造方法。 陶瓷壳模具包括由第一陶瓷材料构成的面涂层。 多个交替层形成在覆盖面涂层上。 所述交替层由第二陶瓷材料和第三陶瓷材料构成,所述第三陶瓷材料具有与第二陶瓷材料不同的热物理性质。 第二陶瓷材料和第三陶瓷材料优选分别是锆石基材料和氧化铝基材料。 所得到的陶瓷壳模具比仅由第二陶瓷材料或仅由第三陶瓷材料形成的壳模具具有更高的耐高温蠕变性。