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Spreadability of powders for additive manufacturing:A critical review of metrics and characterisation methods

Particuology 2024年第10期93卷 211-234页

作者： Fatemeh A.Talebi Zobaideh Haydari Hamid Salehi Mozhdeh Mehrabi Jabbar Gardy Mike Bradley Andrew E.Bayly Ali Hassanpour School of Chemical and Process Engineering University of LeedsLeedsLS29JTUK School of Engineering University of GreenwichGreenwichME44TBUK cormica limited Listerhills Science ParkCampus RoadBradfordBD71HRUK

Powder bed fusion methods of additive manufacturing (AM) require consistent, reproducible, and uniform layers of powder for the reliable production of high-quality parts, where properties of powder are central to achieving this. Among these properties, powder flowability and spreadability play critical roles in determining the quality of these powder *** extensive research has been conducted on powder flow and spreading behaviour, and on their characterisation, there is little critical comparison and review of these terms in the context of AM. Such a review is necessary to further develop and enhance our comprehension of spreading dynamics and its relation to powder properties in AM *** review paper aims to build a coherent understanding of the correlation between powder characteristics and spreading in powder based additive manufacturing and its impact on manufactured parts. It highlights the current progress in comprehending spreading dynamics, the influence of powder characteristics, environmental conditions, spreading system, and the development of testing tools to assess powder spreadability. Furthermore, the paper critically discusses the challenge of finding appropriate quantitative metrics and recent advances in the use of standardised methods for evaluating powder spreadability.

关键词： Powder spreading Powder flowability Powder properties Quality of layer and final products

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