Synthesis and characterisation of Al2O3/Ni-type composites obtained by spark plasma sintering

被引：4

作者：

Voicu, Cristina ^{[1
]}

Popa, Florin ^{[1
]}

Marinca, Traian Florin ^{[1
]}

Neamtu, Bogdan Viorel ^{[1
]}

Lostun, Mihaela ^{[2
]}

Lupu, Nicoleta ^{[2
]}

Chicinas, Ionel ^{[1
]}

机构：

[1] Tech Univ Cluj Napoca, Mat Sci & Engn Dept, 103-105 Muncii Ave, Cluj Napoca 400641, Romania

[2] Natl Inst Res & Dev Tech Phys, Iasi, Romania

来源：

POWDER METALLURGY | 2018年 / 61卷 / 03期

关键词：

Ni/Al2O3; composites; SEM; XRD; spark plasma sintering; mechanical properties; microstructure; MECHANICAL-PROPERTIES; BEHAVIOR; NANOCOMPOSITES; MICROSTRUCTURE; FABRICATION;

D O I：

10.1080/00325899.2018.1465722

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

This paper presents the influence of sintering on the structure, morphology and compressing strength of alumina/nickel composite compacts obtained by spark plasma sintering (SPS). Al2O3/Ni composites were prepared by SPS in argon atmosphere at temperatures in the range of 1000-1200 -C with a holding time of 2, 5 and 10 minutes. The heating rate was 200 C min(-1). These composites have been characterised by X-ray diffraction, SEM and EDX. The relative density and compressive strength of the as-obtained compacts were determined. The results showed that the alumina particles are uniformly dispersed in a quasi-continuous Ni network, and there was no sign of phase changes during sintering. The maximum strength of the alumina/nickel composite with a content of 75 vol. - Al2O3 and 25 vol. - Ni was about 240 MPa for the samples sintered at 1200 C for 10 minutes.

引用

页码：251 / 257

页数：7

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