(1. 湖南大學(xué) 材料科學(xué)與工程學(xué)院，長(zhǎng)沙 410082；
2. 廈門理工大學(xué) 材料科學(xué)與工程學(xué)院，廈門 361024)
摘 要: 以硝酸銅和預(yù)處理碳納米管(CNTs)為原料，采用噴霧干燥-煅燒-還原工藝獲得超細(xì)CNTs/ Cu復(fù)合粉體。將復(fù)合粉體分別利用模壓成形(MP)和冷等靜壓成形(CIP)兩種工藝分別制備出CNTs/ Cu復(fù)合材料。比較兩種工藝下得到的復(fù)合材料的致密度、硬度、導(dǎo)電率和導(dǎo)熱性能。結(jié)果表明：噴霧干燥法制備的復(fù)合粉體純度高，CNTs分散均勻。冷等靜壓成形優(yōu)于模壓工藝，冷等靜壓工藝制備的復(fù)合材料中CNTs含量為0.5%(質(zhì)量分?jǐn)?shù))時(shí)，硬度和熱導(dǎo)率分別達(dá)到105.24 HV和407.84W/(m·K)。
關(guān)鍵字: 銅基復(fù)合材料；碳納米管；噴霧干燥；模壓；冷等靜壓
（1. College of Materials Science and Engineering, Hunan University, Changsha 410082, China;
2. College of Materials Science and Engineering, Xiamen University of Technology, Xiamen 361024, China）
Abstract:CNTs/Cu ultrafine powders were prepared from copper nitrate and pre-treated carbon nanotubes via spraying drying-calcination-hydrogen reduction method. CNTs/Cu composites with different CNTs contents were prepared by mould pressing (MP) and cold isostatic pressing(CIP) of the CNTs/Cu ultrafine powders. The relative density, microhardness, eletrical conductivity and thermal conductivity of the CNTs/ Cu composites were compared. The results indicate that the CNTs powders is high pury and distributes homogeneously, the cold isostatic pressing method is superior to the mould pressing method, especially for the 0.5% (mass fraction) CNTs composite formed by cold isostatic pressing, the microhardness and thermal conductivity increase to 105.24 HV and 407.84 W/(m？K), respectively.
Key words: copper-based composite material; carbon nanotube; spraying drying; mould pressing; cold isostatic pressing
