Fracture of translucent alumina: temperature dependence and influence of CaO dope

Research output: Contribution to journalArticleAcademicpeer-review

20 Citations (Scopus)

Abstract

The influence of CaO on the mechanical behaviour of translucent, MgO-doped Al2O3 ceramics has been investigated, using alumina both without and with added CaO. The addition of only 40 wt ppm CaO drastically changed the microstructure, resulting in an increase of optical transmission, which was the purpose of the addition. Strength (∼300 MPa) and fracture toughness (∼3.7 MPa m1/2), however, as measured at room temperature, decreased by 30% and 10%, respectively, while the resistance to slow crack growth increased slightly. Toughness as well as strength, showed a relative decrease with temperature of about 3×10-4 Ks-1. The results are discussed and compared with available literature data.

Original languageEnglish
Pages (from-to)2195-2202
Number of pages8
JournalJournal of Materials Science
Volume19
Issue number7
DOIs
Publication statusPublished - 1 Jul 1984
Externally publishedYes

Fingerprint

Aluminum Oxide
Alumina
Light transmission
Toughness
Fracture toughness
Crack propagation
Temperature
Microstructure

Cite this

@article{8e8642358d72477ea7fe0bfe14a529dc,
title = "Fracture of translucent alumina: temperature dependence and influence of CaO dope",
abstract = "The influence of CaO on the mechanical behaviour of translucent, MgO-doped Al2O3 ceramics has been investigated, using alumina both without and with added CaO. The addition of only 40 wt ppm CaO drastically changed the microstructure, resulting in an increase of optical transmission, which was the purpose of the addition. Strength (∼300 MPa) and fracture toughness (∼3.7 MPa m1/2), however, as measured at room temperature, decreased by 30{\%} and 10{\%}, respectively, while the resistance to slow crack growth increased slightly. Toughness as well as strength, showed a relative decrease with temperature of about 3×10-4 Ks-1. The results are discussed and compared with available literature data.",
author = "{de With}, G.",
year = "1984",
month = "7",
day = "1",
doi = "10.1007/BF01058095",
language = "English",
volume = "19",
pages = "2195--2202",
journal = "Journal of Materials Science",
issn = "0022-2461",
publisher = "Springer",
number = "7",

}

Fracture of translucent alumina : temperature dependence and influence of CaO dope. / de With, G.

In: Journal of Materials Science, Vol. 19, No. 7, 01.07.1984, p. 2195-2202.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Fracture of translucent alumina

T2 - temperature dependence and influence of CaO dope

AU - de With, G.

PY - 1984/7/1

Y1 - 1984/7/1

N2 - The influence of CaO on the mechanical behaviour of translucent, MgO-doped Al2O3 ceramics has been investigated, using alumina both without and with added CaO. The addition of only 40 wt ppm CaO drastically changed the microstructure, resulting in an increase of optical transmission, which was the purpose of the addition. Strength (∼300 MPa) and fracture toughness (∼3.7 MPa m1/2), however, as measured at room temperature, decreased by 30% and 10%, respectively, while the resistance to slow crack growth increased slightly. Toughness as well as strength, showed a relative decrease with temperature of about 3×10-4 Ks-1. The results are discussed and compared with available literature data.

AB - The influence of CaO on the mechanical behaviour of translucent, MgO-doped Al2O3 ceramics has been investigated, using alumina both without and with added CaO. The addition of only 40 wt ppm CaO drastically changed the microstructure, resulting in an increase of optical transmission, which was the purpose of the addition. Strength (∼300 MPa) and fracture toughness (∼3.7 MPa m1/2), however, as measured at room temperature, decreased by 30% and 10%, respectively, while the resistance to slow crack growth increased slightly. Toughness as well as strength, showed a relative decrease with temperature of about 3×10-4 Ks-1. The results are discussed and compared with available literature data.

UR - http://www.scopus.com/inward/record.url?scp=0021455805&partnerID=8YFLogxK

U2 - 10.1007/BF01058095

DO - 10.1007/BF01058095

M3 - Article

AN - SCOPUS:0021455805

VL - 19

SP - 2195

EP - 2202

JO - Journal of Materials Science

JF - Journal of Materials Science

SN - 0022-2461

IS - 7

ER -