Energy-based ball milling process design and dispersion behavior of high content CNTs/Cu composites

IF 4.5 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2025-03-03 DOI:10.1016/j.powtec.2025.120874

Ziyang Xiu , Jinpeng Sun , Xiao Li , Yihao Chen , Yue Yan , Puzhen Shao , Yuhong Li , Wenshu Yang , Guoqin Chen , Boyu Ju

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Abstract

The uniform dispersion of high content CNTs in metal matrix composites is a key problem restricting the preparation of materials. Aiming at the problem of agglomeration and damage of CNTs in the preparation of composites, the ball milling energy formula of CNTs/Cu mixed powder during ball milling was established in this paper. The relationship between ball milling parameters and dispersed structure was established by quantitative calculation of ball milling energy, and the ball milling energy equation suitable for high content CNTs/Cu composites was established. It is found that the premise of uniform distribution of CNTs in Cu powder is that the ball milling impact energy (E_p) should be controlled below 142.7 J/(g·hit). According to the critical condition of plastic deformation of Cu powder, E_p should also be controlled above 1.14 J/(g·hit), and ball milling input energy (E_t) should be controlled above 1.93 × 10¹¹ J/g. The reliability of the equation was verified by reference literature, which guided the high-quality preparation of 2 wt% CNT / Cu composites, and the hardness was increased to 2.3 times. This result provides an experimental and theoretical basis for the optimization of ball milling process and the study of low damage dispersion mechanism of high content CNTs in metal matrix composites.

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来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.