Analysis of the Electroconsolidation Process of Fine-Dispersed Structures Out of Hot Pressed Al2O3WC Nanopowders

被引：16

作者：

Gevorkyan, Edwin ^{[1
]}

Rucki, Miroslaw ^{[2
]}

Krzysiak, Zbigniew ^{[3
]}

Chishkala, Volodymyr ^{[4
]}

Zurowski, Wojciech ^{[2
]}

Kucharczyk, Wojciech ^{[2
]}

Barsamyan, Voskan ^{[5
]}

Nerubatskyi, Volodymyr ^{[1
]}

Mazur, Tomasz ^{[2
]}

Morozow, Dmitrij ^{[2
]}

Siemiatkowski, Zbigniew ^{[2
]}

Caban, Jacek ^{[6
]}

机构：

[1] Ukraine State Univ Railway Transport, Wagon Engn & Prod Qual, 7 Feuerbach Sq, UA-61010 Kharkiv, Ukraine

[2] Kazimierz Pulaski Univ Technol & Humanities Radom, Fac Mech Engn, Stasieckiego 54, PL-26600 Radom, Poland

[3] Univ Life Sci Lublin, Fac Prod Engn, Gleboka 28, PL-20612 Lublin, Poland

[4] Kharkov Natl Univ, Dept Reactor Engn Mat & Phys Technol, 4 Svobody Sq, UA-61022 Kharkiv, Ukraine

[5] Natl Polytech Univ Armenia, Vanadzor Branch, Chair Appl Phys, Vanadzor 2011, Armenia

[6] Lublin Univ Technol, Fac Mech Engn, Nadbystrzycka 36, PL-20618 Lublin, Poland

来源：

MATERIALS | 2021年 / 14卷 / 21期

关键词：

electroconsolidation; nanopowder; tungsten carbide; fast sintering; grain growth; diffusion; WEAR BEHAVIOR; COATINGS; MICROSTRUCTURE; COMPACTION; COMPOSITE; EVOLUTION; POWDER; IMPACT;

D O I：

10.3390/ma14216503

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Fabrication of alumina-tungsten carbide nanocomposite was investigated. Characteristics of the densification and sintering were analyzed considering both the nano-size particle starting powders and the processing stages. Different heating rates were generated during densification and consolidation with a maximal load was applied only after a temperature of 1000 & DEG;C was reached. Due to the varying dominance of different physical processes affecting the grains, appropriate heating rates and pressure at different stages ensured that a structure with submicron grains was obtained. With directly applied alternating current, it was found that the proportion Al2O3 (50 wt.%)-WC provided the highest fracture toughness, and a sintering temperature above 1600 & DEG;C was found to be disadvantageous. High heating rates and a short sintering time enabled the process to be completed in 12 min, saving energy and time.

引用

页数：14

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