1448125 Dispersion-hardened alloys NIPPON TELEGRAPH & TELEPHONE PUBLIC CORP 4 Dec 1973 [21 Dec 1972 22 Feb 1973] 56185/73 Headings C7A and C7D An Al-Al 2 O 3 or Al alloy - Al 2 O 3 composite containing 0.01-0.2 wt per cent Al 2 O 3 is formed from oxidized Al powder having a grain size of 40-100 microns by compacting the powder hydrostatically and sintering at 660‹-700 C for 0.5 to 1.5 hours. The resulting composite has a conductivity of 57-64% IACS. The powder (preferably atomized) may contain up to 1.6% Si, up to 0.28% Zr, up to 1% Ti, and up to 1.8% Mn, and may also contain small amounts of Fe, V, Cu. The sintering is carried out in vacuum, reducing gas, e.g. H 2 , or inert gas, e.g. Ar. The composite may be subsequently annealed.
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机译：1448125弥散硬化合金日本电报电话公司1973年12月4日[1972年12月21日1973年2月22日] 56185/73标题C7A和C7D Al-Al 2 O 3或铝合金-含有0.01-0.2 wt％的Al 2 O 3复合材料百分之四十的Al 2 O 3由晶粒尺寸为40-100微米的氧化的Al粉末形成，方法是将其静水压实并在660-700℃下烧结0.5至1.5小时。所得复合材料的电导率为57-64％IACS。粉末（优选雾化的）可包含至多1.6％的Si，至多0.28％的Zr，至多1％的Ti和至多1.8％的Mn，还可以包含少量的Fe，V，Cu。烧结是在真空中进行的，还原了气体，例如氮气。 H 2或惰性气体，例如啊该复合材料可随后被退火。
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