Preparation and flow characterization of Al2O3/FeNi composite powders for additive manufacturing

IF 4.5 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2025-03-25 DOI:10.1016/j.powtec.2025.120967

Jinli Xiang , Guixiang Zhang , Yandan Xia , Linzhi Jiang , Haozhe Zhang , Yugang Zhao , Guoyong Zhao , Haiyun Zhang

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引用次数: 0

Abstract

Al₂O₃/FeNi composite powders for powder bed 3D printing are prepared and characterized by gas-solid two-phase flow atomization method. The effects of atomization pressures of 3, 4, 5, 6 and 7 MPa on the morphology, particle size distribution and ceramic phase distribution of the prepared composite powders are investigated, and the composite powders prepared at the optimal atomization pressure (5 MPa) are characterized for their flowability. The results show that with the increase of atomization pressure, the morphology of the composite powder gradually changes from elongated to spherical, the particle size gradually decreases, and the distribution of ceramic phase is gradually sparse. When the atomization pressure is 5 Mpa, the composite powder has a high spherical shape, the ceramic phase is relatively uniformly distributed, and the particle size distribution is concentrated in the range of 40–60 μm. Comparison of the composite powders at the optimum atomization pressure with the alloy powders under the same atomization conditions shows that they have the same “good” flowability. However, many of the flow properties still differ due to the presence of Al₂O₃ particles on the surface. This paper provides an innovative method for preparing ceramic/metal-based composite powders for 3D printing.

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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.