Abstract
Four-point bend tests with in situ acoustic emission (AE) were used to study the cracking behavior of alumina-3 % titania materials prepared by gas- and water-stabilized plasma technologies (GSP and WSP, respectively). Catastrophic failure was observed for GSP-sprayed samples while WSP-sprayed samples exhibited microcracking before failure. The amplitude and energy distributions were also investigated, and it was determined that the percentage of macrocracks for GSP-sprayed samples is much larger than for WSP-sprayed samples. The processing effects, which induced differences in microstructure, may account for the differences in AE responses.
| Original language | English |
|---|---|
| Pages (from-to) | 334-336 |
| Number of pages | 3 |
| Journal | Journal of Thermal Spray Technology |
| Volume | 7 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Sept 1998 |
| Externally published | Yes |
Keywords
- Acoustic emission
- Cracking mechanisms
- Cracking of composites
- Thermal spray
ASJC Scopus subject areas
- Condensed Matter Physics
- Surfaces, Coatings and Films
- Materials Chemistry
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