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Proceedings Paper

Ultraprecise thermal expansion measurements of partially stabilized zirconia gauge blocks with an interferometric dilatometer
Author(s): Masahiro Okaji; Naofumi Yamada; Hirofumi Moriyama
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Paper Abstract

Linear thermal expansion coefficients (LTECs) of two kinds of partially stabilized zirconica (PSZ) gauge blocks were measured in the range from -10 to 60 degrees C with an optical heterodyne interferometric dilatometer. The dilatometer provides an order of 1 X 10-9 K-1 uncertainty and reproducibility in LTEC measurement. LTEC of (9.230 +/- 0.012) X 10-6 K-1 were obtained for four 2 percent Al2O3- PSZ gauge blocks, and (9.383 +/- 0.001) X K-1 for one 99.9 percent PSZ gauge block. These differences are discussed, together with the compositions and production lots.

Paper Details

Date Published: 30 September 1998
PDF: 9 pages
Proc. SPIE 3477, Recent Developments in Optical Gauge Block Metrology, (30 September 1998); doi: 10.1117/12.323117
Show Author Affiliations
Masahiro Okaji, National Research Lab. of Metrology (Japan)
Naofumi Yamada, National Research Lab. of Metrology (Japan)
Hirofumi Moriyama, Mitutoyo Corp. (Japan)


Published in SPIE Proceedings Vol. 3477:
Recent Developments in Optical Gauge Block Metrology
Jennifer E. Decker; Nicholas Brown, Editor(s)

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