Influence of alumina content to mechanical properties and electric discharge machinability of zirconia (1.5Y-1.5Nd-TZP)-tungsten carbide-alumina composites

被引：2

作者：

Walter, Ella ^{[1
]}

Gommeringer, Andrea ^{[1
]}

Kern, Frank ^{[1
]}

机构：

[1] Univ Stuttgart, Inst Mfg Technol Ceram Components & Composites, Fac Engn Design Prod Engn & Automot Engn 7, Allmandring 7B, D-70569 Stuttgart, Germany

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2023年 / 43卷 / 07期

关键词：

Zirconia; Tungsten carbide; Electric discharge machining; Mechanical properties; Microstructure; Phase composition; CERAMICS; PHASE; STRENGTH; SYSTEM; SIZE;

D O I：

10.1016/j.jeurceramsoc.2022.12.014

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Composites of yttria neodymia co-stabilized zirconia, 24-32 vol% nanoscale tungsten carbide and 0.5-10 vol% alumina were manufactured by hot pressing and characterized in terms of mechanical properties, phase composition, microstructure and electric discharge machinability. Addition of 10 vol% alumina leads to an in-crease in hardness and Young's modulus and an in average slightly higher bending strength. The transformability of the zirconia matrix and thereby fracture toughness is reduced by alumina addition. In EDM alumina reduces the thickness of the re-solidified layer, reduces surface defects and leads to smoother surfaces especially at high discharge currents, the effect on material removal rate is negligible.

引用

页码：2834 / 2842

页数：9

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