High/room temperature mechanical properties of 3Y-TZP/CNTs composites

Mahdiar Taheri; Mehdi Mazaheri; Farhad Golestani-Fard; Hamidreza Rezaie; Robert Schaller

doi:10.1016/j.ceramint.2013.09.098

High/room temperature mechanical properties of 3Y-TZP/CNTs composites

Mahdiar Taheri
, Mehdi Mazaheri^*
, Farhad Golestani-Fard
, Hamidreza Rezaie
, Robert Schaller

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

Spark Plasma Sintering (SPS) method was practiced, in the current investigation, to obtain fully dense materials with an excellent dispersion of MWCNTs (Multi-walled Carbon Nanotubes) within the matrix. Scanning and transmission electron microscopy micrographs as well as Raman Spectroscopy revealed no conspicuous signs of damages on the nanotubes' structure, as a result of applying appropriate processing measures. Measurements of mechanical properties revealed the value of 15.2±0.4 MPa m^1/2 for indentation fracture toughness, impling our success to align transformation toughening (while the zirconia has the grain size around 1 μm) with the effects of MWCNTs addition (5 wt%). High temperature mechanical properties of the composites have been investigated using Mechanical Spectroscopy (MS) up to 1600 K at frequency equal to 1 Hz. The MS results proved that CNTs could hinder grain-boundary sliding and subsequently lead to an enhanced creep resitance at high temperatures.

Original language	English
Pages (from-to)	3347-3352
Number of pages	6
Journal	Ceramics International
Volume	40
Issue number	2
DOIs	https://doi.org/10.1016/j.ceramint.2013.09.098
Publication status	Published - Mar 2014
Externally published	Yes

Access to Document

10.1016/j.ceramint.2013.09.098

Cite this

@article{1637d66f6940464b9a64aed752848958,

title = "High/room temperature mechanical properties of 3Y-TZP/CNTs composites",

abstract = "Spark Plasma Sintering (SPS) method was practiced, in the current investigation, to obtain fully dense materials with an excellent dispersion of MWCNTs (Multi-walled Carbon Nanotubes) within the matrix. Scanning and transmission electron microscopy micrographs as well as Raman Spectroscopy revealed no conspicuous signs of damages on the nanotubes' structure, as a result of applying appropriate processing measures. Measurements of mechanical properties revealed the value of 15.2±0.4 MPa m1/2 for indentation fracture toughness, impling our success to align transformation toughening (while the zirconia has the grain size around 1 μm) with the effects of MWCNTs addition (5 wt\%). High temperature mechanical properties of the composites have been investigated using Mechanical Spectroscopy (MS) up to 1600 K at frequency equal to 1 Hz. The MS results proved that CNTs could hinder grain-boundary sliding and subsequently lead to an enhanced creep resitance at high temperatures.",

keywords = "C. Creep, Carbon nanotubes, Ceramic matrix composites, Toughness, Zirconia",

author = "Mahdiar Taheri and Mehdi Mazaheri and Farhad Golestani-Fard and Hamidreza Rezaie and Robert Schaller",

note = "{\textcopyright}2013 The authors ",

year = "2014",

month = mar,

doi = "10.1016/j.ceramint.2013.09.098",

language = "English",

volume = "40",

pages = "3347--3352",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd.",

number = "2",

}

TY - JOUR

T1 - High/room temperature mechanical properties of 3Y-TZP/CNTs composites

AU - Taheri, Mahdiar

AU - Mazaheri, Mehdi

AU - Golestani-Fard, Farhad

AU - Rezaie, Hamidreza

AU - Schaller, Robert

PY - 2014/3

Y1 - 2014/3

N2 - Spark Plasma Sintering (SPS) method was practiced, in the current investigation, to obtain fully dense materials with an excellent dispersion of MWCNTs (Multi-walled Carbon Nanotubes) within the matrix. Scanning and transmission electron microscopy micrographs as well as Raman Spectroscopy revealed no conspicuous signs of damages on the nanotubes' structure, as a result of applying appropriate processing measures. Measurements of mechanical properties revealed the value of 15.2±0.4 MPa m1/2 for indentation fracture toughness, impling our success to align transformation toughening (while the zirconia has the grain size around 1 μm) with the effects of MWCNTs addition (5 wt%). High temperature mechanical properties of the composites have been investigated using Mechanical Spectroscopy (MS) up to 1600 K at frequency equal to 1 Hz. The MS results proved that CNTs could hinder grain-boundary sliding and subsequently lead to an enhanced creep resitance at high temperatures.

AB - Spark Plasma Sintering (SPS) method was practiced, in the current investigation, to obtain fully dense materials with an excellent dispersion of MWCNTs (Multi-walled Carbon Nanotubes) within the matrix. Scanning and transmission electron microscopy micrographs as well as Raman Spectroscopy revealed no conspicuous signs of damages on the nanotubes' structure, as a result of applying appropriate processing measures. Measurements of mechanical properties revealed the value of 15.2±0.4 MPa m1/2 for indentation fracture toughness, impling our success to align transformation toughening (while the zirconia has the grain size around 1 μm) with the effects of MWCNTs addition (5 wt%). High temperature mechanical properties of the composites have been investigated using Mechanical Spectroscopy (MS) up to 1600 K at frequency equal to 1 Hz. The MS results proved that CNTs could hinder grain-boundary sliding and subsequently lead to an enhanced creep resitance at high temperatures.

KW - C. Creep

KW - Carbon nanotubes

KW - Ceramic matrix composites

KW - Toughness

KW - Zirconia

UR - https://www.scopus.com/pages/publications/84889078928

U2 - 10.1016/j.ceramint.2013.09.098

DO - 10.1016/j.ceramint.2013.09.098

M3 - Article

AN - SCOPUS:84889078928

SN - 0272-8842

VL - 40

SP - 3347

EP - 3352

JO - Ceramics International

JF - Ceramics International

IS - 2

ER -

High/room temperature mechanical properties of 3Y-TZP/CNTs composites

Abstract

Access to Document

Other files and links

Fingerprint

Cite this