TY - JOUR

T1 - Preparation of porous materials by Spark Plasma Sintering

T2 - Peculiarities of alloy formation during consolidation of Fe@Pt core-shell and hollow Pt(Fe) particles

AU - Bokhonov, Boris B.

AU - Dudina, Dina V.

PY - 2017/1/1

Y1 - 2017/1/1

N2 - In this work, the behavior of the Fe@Pt core-shell particles and hollow Pt(Fe) particles during pressureless Spark Plasma Sintering (SPS) was investigated. The Fe@Pt core-shell microparticles were synthesized by galvanic replacement reaction using reduction of H2PtCl6 aqueous solution by metallic iron. Pt(Fe) hollow particles were obtained by dissolving iron from the synthesized core-shell particles in HCl solution. Consolidation resulted in the formation of porous compacts, necking between the particles, alloying between the metals, and growth of the crystallites. The compositional design of the consolidated materials was possible through changing the order of sintering and HCl treatment stages. This work has demonstrated that acid corrosion and SPS can be used together to tailor the composition and morphology of materials derived from the core-shell particles.

AB - In this work, the behavior of the Fe@Pt core-shell particles and hollow Pt(Fe) particles during pressureless Spark Plasma Sintering (SPS) was investigated. The Fe@Pt core-shell microparticles were synthesized by galvanic replacement reaction using reduction of H2PtCl6 aqueous solution by metallic iron. Pt(Fe) hollow particles were obtained by dissolving iron from the synthesized core-shell particles in HCl solution. Consolidation resulted in the formation of porous compacts, necking between the particles, alloying between the metals, and growth of the crystallites. The compositional design of the consolidated materials was possible through changing the order of sintering and HCl treatment stages. This work has demonstrated that acid corrosion and SPS can be used together to tailor the composition and morphology of materials derived from the core-shell particles.

KW - Corrosion

KW - Metals and alloys

KW - Scanning electron microscopy

KW - Sintering

KW - OXIDATION

KW - NANOPARTICLES

KW - ROUTE

KW - MICROSPHERES

KW - VERSATILE

KW - NANOSTRUCTURES

KW - FABRICATION

UR - http://www.scopus.com/inward/record.url?scp=84995554219&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2016.09.146

DO - 10.1016/j.jallcom.2016.09.146

M3 - Article

AN - SCOPUS:84995554219

VL - 707

SP - 233

EP - 237

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

ER -