The Effect of Annealing on the Photoacoustic and Photothermal Response of Al[sub 2]O[sub 3]–SiC–TiC Ceramics with Internal Stresses.

Autor: Muratikov, K. L., Glazov, A. L., Nikolaev, V. I., Rose, D. N., Dumar, D. E.
Předmět:
Zdroj: Technical Physics Letters; Jun2001, Vol. 27 Issue 6, p500, 4p
Abstrakt: The Vickers indentation zones in Al[sub 2]O[sub 3]-SiC-TiC ceramics were studied by scanning laser photodeflection and photoacoustic microscopy. The method of photoacoustic microscopy with piezoelectric detector (PAMPD) is sensitive to the internal stress distribution in the material. The effect of annealing on the PAMPD signal of the Al[sub 2]O[sub 3]-SiC-TiC ceramics was studied. An increase in the annealing time is accompanied by decrease in the PAMPD response from the vertices of radial cracks. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index