Abstract
A bending creep test is proposed for measuring the change in viscosity of a porous material during densification. Equations, based on simple beam deflection theory, were derived to obtain the viscosity from a series of loading experiments using rectangular samples of different densities. By measuring the deflection in the center of the specimen between the spans, the viscosity of a porous material during densification can be measured. Experiments with porous Y2O3-stabilized ZrO2 beams were used to illustrate the bending creep test. Consistent with theory the viscosity increased from 50 to 400 GPa·s as the sample densified from 87% to 98% density. The rapid increase in viscosity was considered to be a result of both densification and grain growth.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 877-882 |
| Number of pages | 6 |
| Journal | Journal of the American Ceramic Society |
| Volume | 86 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jan 1 2003 |
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All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Geology
- Geochemistry and Petrology
- Materials Chemistry
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Bending creep test to measure the viscosity of porous materials during sintering. / Lee, Sang Ho; Messing, Gary Lynn; Green, David J.
In: Journal of the American Ceramic Society, Vol. 86, No. 6, 01.01.2003, p. 877-882.Research output: Contribution to journal › Article
TY - JOUR
T1 - Bending creep test to measure the viscosity of porous materials during sintering
AU - Lee, Sang Ho
AU - Messing, Gary Lynn
AU - Green, David J.
PY - 2003/1/1
Y1 - 2003/1/1
N2 - A bending creep test is proposed for measuring the change in viscosity of a porous material during densification. Equations, based on simple beam deflection theory, were derived to obtain the viscosity from a series of loading experiments using rectangular samples of different densities. By measuring the deflection in the center of the specimen between the spans, the viscosity of a porous material during densification can be measured. Experiments with porous Y2O3-stabilized ZrO2 beams were used to illustrate the bending creep test. Consistent with theory the viscosity increased from 50 to 400 GPa·s as the sample densified from 87% to 98% density. The rapid increase in viscosity was considered to be a result of both densification and grain growth.
AB - A bending creep test is proposed for measuring the change in viscosity of a porous material during densification. Equations, based on simple beam deflection theory, were derived to obtain the viscosity from a series of loading experiments using rectangular samples of different densities. By measuring the deflection in the center of the specimen between the spans, the viscosity of a porous material during densification can be measured. Experiments with porous Y2O3-stabilized ZrO2 beams were used to illustrate the bending creep test. Consistent with theory the viscosity increased from 50 to 400 GPa·s as the sample densified from 87% to 98% density. The rapid increase in viscosity was considered to be a result of both densification and grain growth.
UR - http://www.scopus.com/inward/record.url?scp=0038481632&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0038481632&partnerID=8YFLogxK
U2 - 10.1111/j.1151-2916.2003.tb03391.x
DO - 10.1111/j.1151-2916.2003.tb03391.x
M3 - Article
AN - SCOPUS:0038481632
VL - 86
SP - 877
EP - 882
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
SN - 0002-7820
IS - 6
ER -