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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。
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公开(公告)号:US20050074381A1
公开(公告)日:2005-04-07
申请号:US10363520
申请日:2001-09-07
申请人: Malcolm Frost , John Sheehan
发明人: Malcolm Frost , John Sheehan
摘要: Calcium is precipitated from a solution containing calcium chloride by a process which includes reacting the calcium chloride with magnesium carbon hydrate under reaction conditions to form a calcium carbonate precipitate.
摘要翻译: 通过包括在反应条件下使氯化钙与碳酸镁水合物反应形成碳酸钙沉淀物的方法,从含有氯化钙的溶液中沉淀出钙。
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