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    • 12. 发明授权
    • Ceramic-metal composite article and joining method
    • 陶瓷 - 金属复合制品和接合方法
    • US5108025A
    • 1992-04-28
    • US703079
    • 1991-05-20
    • Shinhoo KangJohn H. SelverianHans J. KimEdmund M. DunnKyung S. Kim
    • Shinhoo KangJohn H. SelverianHans J. KimEdmund M. DunnKyung S. Kim
    • C04B37/02
    • C04B37/026C04B2237/12C04B2237/121C04B2237/122C04B2237/123C04B2237/124C04B2237/125C04B2237/126C04B2237/365C04B2237/368C04B2237/405C04B2237/406C04B2237/708C04B2237/76Y10T403/335Y10T403/343Y10T403/479Y10T403/74
    • A ceramic-metal article including a ceramic rod, a metal rod, and a braze joining the ceramic and metal rods at a braze area of a coaxial bore in the metal rod. The bore gradually decreases in diameter, having an inward seat area sized for close sliding fit about the ceramic, a larger brazing area near the joint end, and a void area intermediate the braze and seat areas. The ceramic is seated without brazing in the bore seat area. The side wall between the brazing area and the metal outer surface is about 0.030-0.080 inch. The braze includes an inner braze layer, an outer braze layer, and an interlayer about 0.030-0.090 inch thick. A shoulder between the brazing and void areas supports the interlayer during bonding while preventing bonding between the void area and the ceramic member, leaving a void space between the void area and the ceramic member. A venting orifice extends generally radially through the metal member from the outer surface to the void space. The braze layers are palladium, platinum, gold, silver, copper, nickel, indium, chromium, molybdenum, niobium, iron, aluminum, or alloys thereof. Preferred is a gold-palladium-nickel brazing alloy. The interlayer is nickel, molybdenum, copper, tantalum, tungsten, niobium, aluminum, cobalt, iron, or an alloy thereof.
    • 一种陶瓷金属制品,包括陶瓷棒,金属棒和钎焊,将金属棒中的同轴孔的钎焊区域处的陶瓷和金属棒接合。 孔的直径逐渐减小,具有尺寸适于在陶瓷附近滑动配合的向内座面积,接合端附近的较大的钎焊区域以及钎焊和座位区域之间的空隙区域。 陶瓷在没有铜焊的情况下就座在孔座区域。 钎焊区域和金属外表面之间的侧壁约为0.030-0.080英寸。 钎焊包括内部钎焊层,外部钎焊层和约0.030-0.090英寸厚的中间层。 钎焊和空隙区域之间的肩部在接合期间支撑夹层,同时防止空隙区域和陶瓷构件之间的结合,在空隙区域和陶瓷构件之间留下空隙。 排气孔从外表面到空隙空间大致径向延伸穿过金属构件。 钎焊层是钯,铂,金,银,铜,镍,铟,铬,钼,铌,铁,铝或它们的合金。 优选的是金 - 钯 - 镍钎焊合金。 中间层是镍,钼,铜,钽,钨,铌,铝,钴,铁或它们的合金。