2000
DOI: 10.1111/j.1151-2916.2000.tb01197.x
|View full text |Cite
|
Sign up to set email alerts
|

R‐Curve Behavior and Crack‐Closure Stresses in Barium Titanate and (Mg,Y)‐PSZ Ceramics

Abstract: R-curves, process zones, and shielding stresses of barium titanate (BaTiO 3 ) and partially stabilized zirconia (PSZ) have been studied using compact-tension (CT) specimens. BaTiO 3 and PSZ exhibited pronounced R-curves that rose over similar crack lengths and showed steady-state toughnesses of 0.7 and 6.4 MPa⅐m 1/2 , respectively. Both steady-state toughnesses were ϳ80% larger than the initial fracture toughnesses. Ferroelastic domain switching was the main toughening mechanism in BaTiO 3 , whereas, in PSZ, t… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

11
55
1

Year Published

2001
2001
2018
2018

Publication Types

Select...
7
2

Relationship

1
8

Authors

Journals

citations
Cited by 102 publications
(67 citation statements)
references
References 31 publications
11
55
1
Order By: Relevance
“…5. The 90 o domain switching-induced toughening is also reported in other experiments of crack propagation in BaTiO 3 [47,49,50]. It is also obvious in Fig.…”
Section: Numerical Results and Discussionsupporting
confidence: 80%
“…5. The 90 o domain switching-induced toughening is also reported in other experiments of crack propagation in BaTiO 3 [47,49,50]. It is also obvious in Fig.…”
Section: Numerical Results and Discussionsupporting
confidence: 80%
“…This deviation is attributed to the retarding effect on the crack propagation of the 90 o ferroelastic domain switching in the vicinity of the crack tip. This toughening mechanism is also reported in experiments of crack propagation in BaTiO 3 [80,81]. Figure 12 also shows a sequence of abrupt crack propagation events, subsequent crack arrest, and slow crack propagation periods for the multiphase model.…”
Section: Mechanical Loadingsupporting
confidence: 77%
“…o domain switching induced by an intense cracktip stress field is the major mechanism behind the fracture toughening effect in ferroelectric materials [1,80,81].…”
Section: Discussionmentioning
confidence: 99%
“…In brittle materials the most common used method to measure K I0 is to measure with high spatial resolution using an atomic force (AFM) or scanning electron microscope (SEM) the crack opening displacement (COD) in the crack tip region (Kounga Nijwa et al, 2003;Rödel et al 1990;Meschke et al, 1997Meschke et al, , 2000. With this information Irwin's crack tip solution (Irwin, 1958;Lawn 1993) is applied to evaluate K I0 .…”
Section: Introductionmentioning
confidence: 99%