Enhanced mechanical properties in ed-machinable zirconia-tungsten carbide composites with yttria-neodymia co-stabilized zirconia matrix

11Citations
Citations of this article
6Readers
Mendeley users who have this article in their library.

Abstract

The electrical discharge machining-process (EDM) is a smart solution to optimize the manufacturing chain of customized and complex shaped ceramic components. To comply with the high requirements for the machine and mold design, it is necessary to improve the mechanical properties of ED-machinable ceramics. In this study, ceramic composites with a tetragonal zirconia matrix and tungsten carbide as electrically conductive dispersion were investigated. To improve the toughness of this high strength material, co-stabilized zirconia coated with yttria and neodymia as dopants were used in the compositions with 1.5/1.5 and 1.75/1.25 mol %. These recipes were compared to commercial 3Y-TZP as a reference matrix material combined with the same WC raw powder. The electrically conductive phase content was varied from 20 to 28 vol %. For all compositions, the ceramic blanks were hot pressed at identical dwell and pressure, but with various sintering temperatures (1300◦C to 1450◦C) and then tested with respect to the mechanical and electrical properties. By variation of the stabilizer system, a significantly higher toughness of up to 11.3 MPa√m compared to 5.3 MPa√m for 3Y-TZP-20WC is achieved while the bending strength stays at a comparable high level of >1500 MPa.

References Powered by Scopus

Transformation toughening in zirconia-containing ceramics

1726Citations
N/AReaders
Get full text

Calibration Curve for Quantitative Analysis of the Monoclinic‐Tetragonal ZrO<inf>2</inf> System by X‐Ray Diffraction

1209Citations
N/AReaders
Get full text

Mechanics of Transformation‐Toughening in Brittle Materials

946Citations
N/AReaders
Get full text

Cited by Powered by Scopus

Electrical Discharge Machining Non-Conductive Ceramics: Combination of Materials

35Citations
N/AReaders
Get full text

Surface Integrity Analysis of Ceramics Machined by Wire EDM Using Different Trim Cut Technologies

14Citations
N/AReaders
Get full text

On Electrical Discharge Machining of Non-Conductive Ceramics: A Review

13Citations
N/AReaders
Get full text

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Cite

CITATION STYLE

APA

Gommeringer, A., Kern, F., & Gadow, R. (2018). Enhanced mechanical properties in ed-machinable zirconia-tungsten carbide composites with yttria-neodymia co-stabilized zirconia matrix. Ceramics, 1(1), 26–37. https://doi.org/10.3390/ceramics1010004

Readers' Seniority

Tooltip

Lecturer / Post doc 1

50%

PhD / Post grad / Masters / Doc 1

50%

Readers' Discipline

Tooltip

Medicine and Dentistry 1

50%

Engineering 1

50%

Save time finding and organizing research with Mendeley

Sign up for free