Manufacturing and microstructural characterization of sintered nickel wicks for capillary pumps

Sintered nickel powder is proposed to be used as porous wicks in heat pipes and capillary pumps. In this work the manufacturing procedure for tubular wicks for capillary pump application is discussed. The porosity, mechanical resistance and roundness of tubular wicks made of carbonila powder, atomiz...

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Published in:Materials research (São Carlos, São Paulo, Brazil) São Paulo, Brazil), 1999-07, Vol.2 (3), p.225-229
Main Authors: Reimbrecht, Eduardo Gonçalves, Fredel, Márcio Celso, Bazzo, Edson, Pereira, Fernando M.
Format: Article
Language:English
Subjects:
capillary pump
ENGINEERING, CHEMICAL
MATERIALS SCIENCE, MULTIDISCIPLINARY
METALLURGY & METALLURGICAL ENGINEERING
porosity analysis
sintered nickel powder
wick characterization
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container_title Materials research (São Carlos, São Paulo, Brazil)
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creator Reimbrecht, Eduardo Gonçalves
Fredel, Márcio Celso
Bazzo, Edson
Pereira, Fernando M.
description Sintered nickel powder is proposed to be used as porous wicks in heat pipes and capillary pumps. In this work the manufacturing procedure for tubular wicks for capillary pump application is discussed. The porosity, mechanical resistance and roundness of tubular wicks made of carbonila powder, atomized powder and a powder mixture of both are analyzed. A powder mixture was selected as the best raw material. In this case, pore size in the range of 2 to 24 m m and porosity about 50% were measured. First tests carried out in the laboratory, using acetone as the working fluid, show capillary pumping pressures up to 4 kPa and heat fluxes of about 1 W/cm2 in a two-phase heat transfer loop.
doi_str_mv 10.1590/S1516-14391999000300019
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1516-1439
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source IngentaConnect Journals; SciELO
subjects capillary pump
ENGINEERING, CHEMICAL
MATERIALS SCIENCE, MULTIDISCIPLINARY
METALLURGY & METALLURGICAL ENGINEERING
porosity analysis
sintered nickel powder
wick characterization
title Manufacturing and microstructural characterization of sintered nickel wicks for capillary pumps
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