Nano dispersion copper alloy with high air-tightness and low free oxygen content and brief manufacturing process thereof

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United States of America Patent

PATENT NO 11685968
APP PUB NO 20210363610A1
SERIAL NO

16627979

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Abstract

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Disclosed is a nano dispersion copper alloy with high air-tightness and low free oxygen content and a brief manufacturing process thereof, wherein alloy comprises the following components: Al2O3, Ca and La. The manufacturing process comprises the following steps of: preparing Cu—Al2O3 alloy powder by an internal oxidation method; mixing the Cu—Al2O3 alloy powder with Cu—Ca—La alloy powder; sheathing the mixed powder under protection of argon; performing hot extrusion and then rotary forging; vacuumizing the sheath after the rotary forging; and sealing and placing the sheath in a nitrogen atmosphere with a temperature of 450° C. to 550° C. and a pressure intensity of 40 Mpa to 60 Mpa for 3 hours to 5 hours. The dispersion copper prepared by the present disclosure has the advantages of low free oxygen content (≤15 ppm), high dimensional stability, good air-tightness and an air leakage rate≤1.0×10−10 Pa m3/s after hydrogen annealing.

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Patent OwnerAddress
CENTRAL SOUTH UNIVERSITYNO 932 SOUTH LUSHAN ROAD CHANGSHA HUNAN CHANGSHA 410083

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gong, Shen Hunan, CN 1 0
Li, Zhou Hunan, CN 46 460
Qiu, Wenting Hunan, CN 1 0
Xiao, Zhu Hunan, CN 5 8

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