炭纤维增强镁基复合材料的制备

罗小萍; 张敏刚; 吕春祥; 吕晓轩

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炭纤维增强镁基复合材料的制备
Preparation of Palladium-free Nickel-coated Carbon Fiber Reinforced Magnesium Alloy Composites
2011年31卷第5期页码：457-460
纸质出版日期： 2011 ，
DOI：

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[1]罗小萍,张敏刚,吕春祥,吕晓轩.炭纤维增强镁基复合材料的制备[J].特种铸造及有色合金,2011,31(05):457-460+390.

Luo Xiaoping1, Zhang Mingang1, Lü Chunxiang2, et al. Preparation of Palladium-free Nickel-coated Carbon Fiber Reinforced Magnesium Alloy Composites[J]. Special Casting & Nonferrous Alloys, 2011,31(5):457-460.
[1]罗小萍,张敏刚,吕春祥,吕晓轩.炭纤维增强镁基复合材料的制备[J].特种铸造及有色合金,2011,31(05):457-460+390. DOI：

Luo Xiaoping1, Zhang Mingang1, Lü Chunxiang2, et al. Preparation of Palladium-free Nickel-coated Carbon Fiber Reinforced Magnesium Alloy Composites[J]. Special Casting & Nonferrous Alloys, 2011,31(5):457-460. DOI：

摘要

对炭纤维进行了表面化学镀镍处理并通过扫描电镜（SEM）评价了炭纤维化镀层。利用粉末冶金热挤压方法制备了短切炭纤维增强镁合金复合材料并通过超景深金相显微镜观察了纤维在复合材料中的分布。研究了材料中炭纤维含量为0～4%时对复合材料的影响。结果表明

镀镍炭纤维在复合体中均匀分散

炭纤维质量分数为4.0%的镁预制体采用压制压力为420MPa

烧结温度为550℃

保温0.5h后在480℃用280MPa的压力进行热挤压得到的复合材料力学性能较佳。

Abstract

The carbon fibers were coated nickel by palladium-free activated electroless coating method and characterized by the field emission-scanning electron microscope（FE-SEM）.Chopped carbon fibers reinforced magnesium alloy composites were prepared by powder metallurgy combining with hot extrusion

and fiber distribution in the composites was evaluated by the super depth digital microscope.Effects of carbon fiber content in range of 0

% on microstructure and properties of the composites were investigated.The results show that nickel-coated carbon fiber is uniformly distributed in the composites.Composites containing 4% carbon fiber and 3% aluminum prepared by pressing with 420 MPa and sintering at 550 ℃ for 0.5 hours

and then hot extruding with 280MPa at 480 ℃ can exhibit desirable mechanical properties.