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冷喷涂纯铝抗堵嘴实验研究:从涂层到增材制造

HUANG Chunjie HE Sanrun WAN Wenpeng WICK Filip WIEHLER Levke GÄRTNER Frank KLASSEN Thomas LI Wenya

材料工程2025，Vol.53Issue(12)：14-23,10.

材料工程2025，Vol.53Issue(12)：14-23,10.DOI:10.11868/j.issn.1001-4381.2025.000118

冷喷涂纯铝抗堵嘴实验研究:从涂层到增材制造

Experimental study of anti-clogging nozzle in cold sprayed pure aluminum:from coating to additive manufacturing

HUANG Chunjie ¹HE Sanrun ²WAN Wenpeng ²WICK Filip ³WIEHLER Levke ⁴GÄRTNER Frank ⁴KLASSEN Thomas ⁴LI Wenya²

作者信息

1. Shaanxi Key Laboratory of Friction Welding Technologies,Northwestern Polytechnical University,Xi'an 710072,China||Institute of Materials Technology,Helmut-Schmidt-University/University of the Federal Armed Forces Hamburg,Hamburg 22043,Germany
2. Shaanxi Key Laboratory of Friction Welding Technologies,Northwestern Polytechnical University,Xi'an 710072,China
3. Faculty of Mechanical Engineering,Czech Technical University,Prague 16000,The Czech Republic
4. Institute of Materials Technology,Helmut-Schmidt-University/University of the Federal Armed Forces Hamburg,Hamburg 22043,Germany
折叠

摘要

Abstract

The improved process combining a polybenzimidazole(PBI)polymer nozzle with axial center powder feeding is employed to study the nozzle clogging behavior and its impact on coating deposition.Multi-scale characterization of the coating morphology and microstructure is carried out using X-ray computed tomography(X-CT),optical microscopy,and electron backscatter diffraction.The results show that in the existing process,aluminum powder softening causes adhesion to the inner wall of the SiC nozzle,forming clogging materials.This leads to a powder agglomeration on the coating surface and a porosity of 0.32%.In contrast,the PBI nozzle,when used with the axial center feeding process,significantly reduces particle adhesion and forms a uniform gas-solid two-phase flow,enabling continuous and stable deposition.The resulting coating exhibits significant internal particle plastic deformation with the porosity reduced to 0.16%.Based on the optimized process,aluminum metal additive manufacturing experiments are carried out,achieving continuous spraying for 2 h without nozzle clogging and depositing a 38 mm thick coating on an aluminum alloy substrate.X-CT analysis indicates that there are no significant defects at the interface or within the deposit.The in-plane and out-of-plane tensile strengths of the deposit are about 180 MPa and 80 MPa,respectively,indicating significant anisotropy.

关键词

冷喷涂/铝金属/喷嘴堵塞/组织性能/增材制造

Key words

cold spraying/aluminum metal/nozzle clogging/microstructure and property/additive manu-facturing

分类

矿业与冶金

引用本文复制引用

HUANG Chunjie,HE Sanrun,WAN Wenpeng,WICK Filip,WIEHLER Levke,GÄRTNER Frank,KLASSEN Thomas,LI Wenya..冷喷涂纯铝抗堵嘴实验研究:从涂层到增材制造[J].材料工程,2025,53(12):14-23,10.

基金项目

德国科学基金会Deutsche Forschungsgemeinschaft项目资助(448318292) （448318292）

中央高校基本科研业务费专项(G2024KY05107) （G2024KY05107）

材料工程

OA北大核心

ISSN：1001-4381

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