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    • 6. 发明授权
    • Dispersoid reinforced alloy powder and method of making
    • 分散增强合金粉末及其制造方法
    • US07699905B1
    • 2010-04-20
    • US11429918
    • 2006-05-08
    • Iver E. AndersonRobert L. Terpstra
    • Iver E. AndersonRobert L. Terpstra
    • B22F9/08
    • B22F1/0007B22F9/082B22F2009/0888B22F2009/0896B22F2207/00B22F2999/00C22C1/056C22C1/1042C22C5/02C22C5/06C22C9/00C22C19/03C22C32/00C22C32/0015C22C32/0021C22C49/02Y10T428/12014Y10T428/12056Y10T428/2982Y10T428/2991Y10T428/2993B22F2201/11B22F2201/03B22F2201/02B22F2201/30
    • A method of making dispersion-strengthened alloy particles involves melting an alloy having a corrosion and/or oxidation resistance-imparting alloying element, a dispersoid-forming element, and a matrix metal wherein the dispersoid-forming element exhibits a greater tendency to react with a reactive species acquired from an atomizing gas than does the alloying element. The melted alloy is atomized with the atomizing gas including the reactive species to form atomized particles so that the reactive species is (a) dissolved in solid solution to a depth below the surface of atomized particles and/or (b) reacted with the dispersoid-forming element to form dispersoids in the atomized particles to a depth below the surface of said atomized particles. The atomized alloy particles are solidified as solidified alloy particles or as a solidified deposit of alloy particles. Bodies made from the dispersion strengthened alloy particles, deposit thereof, exhibit enhanced fatigue and creep resistance and reduced wear as well as enhanced corrosion and/or oxidation resistance at high temperatures by virtue of the presence of the corrosion and/or oxidation resistance imparting alloying element in solid solution in the particle alloy matrix.
    • 制造分散强化合金颗粒的方法包括熔化具有腐蚀和/或抗氧化性赋予合金元素,分散质形成元素和基质金属的合金,其中分散质形成元素表现出更大的与 从雾化气体获得的反应物质比合金元素。 熔化的合金与包括反应性物质的雾化气体雾化以形成雾化颗粒,使得反应性物质(a)溶解在固溶体中至雾化颗粒表面下方的深度和/或(b)与分散质 - 形成元素以在雾化颗粒中形成分散质,使其在所述雾化颗粒的表面下方的深度。 雾化的合金颗粒作为固化合金颗粒固化,或作为合金颗粒的固化沉积物固化。 由分散强化的合金颗粒,其沉积物,由于存在耐腐蚀和/或抗氧化性赋予的合金元素,在高温下表现出增强的疲劳和抗蠕变性和降低的磨损以及增强的耐腐蚀和/或耐氧化性。 在颗粒合金基质中的固溶体。
    • 7. 发明授权
    • Lead-free solder
    • 无铅焊料
    • US06231691B1
    • 2001-05-15
    • US08796471
    • 1997-02-10
    • Iver E. AndersonRobert L. Terpstra
    • Iver E. AndersonRobert L. Terpstra
    • C22C700
    • B23K35/262
    • A Sn—Ag—Cu eutectic alloy is modified with one or more low level and low cost alloy additions to enhance high temperature microstructural stability and thermal-mechanical fatigue strength without decreasing solderability. Purposeful fourth or fifth element additions in the collective amount not exceeding about 1 weight % (wt. %) are added to Sn—Ag—Cu eutectic solder alloy based on the ternary eutectic Sn—4.7%Ag—1.7%Cu (wt. %) and are selected from the group consisting essentially of Ni, Fe, and like-acting elements as modifiers of the intermetallic interface between the solder and substrate to improve high temperature solder joint microstructural stability and solder joint thermal-mechanical fatigue strength.
    • Sn-Ag-Cu共晶合金用一种或多种低水平和低成本的合金添加剂进行改性,以提高高温微结构稳定性和热机械疲劳强度,而不降低可焊性。 基于三元共晶Sn-4.7%Ag-1.7%Cu(重量%),Sn-Ag-Cu共晶焊料合金中加入总量不超过约1重量%(重量%)的有目的的第四或第五元素添加量 ),并且选自基本上由Ni,Fe和类似作用元素组成的组,作为焊料和衬底之间的金属间界面的改性剂,以改善高温焊点微结构稳定性和焊点热 - 机械疲劳强度。