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    • 4. 发明授权
    • Production of metal foams
    • 生产金属泡沫
    • US06444007B1
    • 2002-09-03
    • US09511216
    • 2000-02-23
    • Wilfried KnottAndreas Weier
    • Wilfried KnottAndreas Weier
    • B22F310
    • B22F3/1125B22F2999/00B22F3/23
    • A process for producing metal foams comprising mixing one or more metal powders, if desired combined with particulate metallic or nonmetallic, e.g., mineral, additives of varying particle size, with a gas-liberating blowing agent; optionally preheating the mixture in an open or closed mold to a temperature below the decomposition temperature of the blowing agent; subsequently heating the mixture to a temperature above the melting point of the lowest-melting metal in such a way that the temperature rises from the equilibrium decomposition temperature of the blowing agent to the melting point of the metal in a time which is shorter than the time required to reach the equilibrium state in the blowing agent/blowing gas system at this temperature and subsequently cooling the resulting metal foam to a temperature below the melting point of the lowest-melting metal is provided as well as foamed metal bodies obtained using the inventive process.
    • 一种用于生产金属泡沫的方法,包括将一种或多种金属粉末与气体释放发泡剂混合,如果需要与颗粒金属或非金属(例如矿物质,不同粒度的添加剂)混合, 可选地将混合物在开放或封闭的模具中预热到低于发泡剂分解温度的温度; 随后将混合物加热至最低熔点金属熔点以上的温度,使得温度从发泡剂的平衡分解温度升至金属熔点的时间短于时间 需要在该温度下在发泡剂/吹塑气体系统中达到平衡状态,随后将所得金属泡沫体冷却至低于最低熔点金属的熔点的温度,以及使用本发明方法获得的泡沫金属体 。