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视点电触头用粉末冶金Ｃｒ -Ｃｕ合金粉末冶金二元Ｃｒ -Ｃｕ合金是一种复合材料 ,高电阻率的铬颗粒弥散分布于高电导率的铜基体之中。通常用粗铬粉 (2 0 0～ 30 0 μｍ)制造这些合金以减少表面氧化 ,但这样却难以制造高密度与显微组织均匀的烧结件。在含 2 5 %或 35 %铬的Ｃｒ
Viewpoint Electrical Contact Powder Metallurgy Cr-Cu Alloy Powder Metallurgy The binary Cr-Cu alloy is a composite material in which chromium particles of high resistivity are dispersedly distributed in a copper substrate of high electrical conductivity. These alloys are usually made of coarse chromium powder (200 to 300 μm) to reduce the surface oxidation, but it is difficult to produce a high-density sintered microstructure homogenously. Cr containing 25% or 35% chromium