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公开(公告)号:US20050161121A1
公开(公告)日:2005-07-28
申请号:US10501704
申请日:2003-01-20
申请人: Ma Qian , David St. John , Malcolm Frost
发明人: Ma Qian , David St. John , Malcolm Frost
摘要: Zirconium sponge can be chemically depassivated by treatment with hydrofluoric acid to improve the ability of molten magnesium/magnesium alloy to dissolve zirconium from the treated zirconium sponge and to form a melt containing substantially evenly distributed particles of zirconium. Optical micrographs showing the grain refining ability of pretreated sponge when added to pure magnesium at 680° C. All micrographs are of the same magnification. (a) Pure magnesium, (b) after adding 1 wt % sponge followed by 20 minutes manual stirring, and (c) after a further 10 minutes stirring.
摘要翻译: 锆海绵可以通过用氢氟酸处理来化学去钝化,以提高熔融的镁/镁合金从经处理的锆海绵中溶解锆的能力,并形成含有基本均匀分布的锆颗粒的熔体。 显示在680℃下加入到纯镁中时预处理海绵的晶粒细化能力的光学显微照片。所有显微照片都具有相同的放大倍率。 (a)纯镁,(b)在加入1重量%海绵然后20分钟手动搅拌后,(c)再搅拌10分钟。