Ultraprecise thermal expansion measurements of partially stabilized zirconia gauge blocks with an interferometric dilatometer

Masahiro Okaji; Naofumi Yamada; Hirofumi Moriyama

doi:10.1117/12.323117

30 September 1998 Ultraprecise thermal expansion measurements of partially stabilized zirconia gauge blocks with an interferometric dilatometer

Masahiro Okaji, Naofumi Yamada, Hirofumi Moriyama

Author Affiliations +

Proceedings Volume 3477, Recent Developments in Optical Gauge Block Metrology; (1998) https://doi.org/10.1117/12.323117
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

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.

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Masahiro Okaji, Naofumi Yamada, and Hirofumi Moriyama "Ultraprecise thermal expansion measurements of partially stabilized zirconia gauge blocks with an interferometric dilatometer", Proc. SPIE 3477, Recent Developments in Optical Gauge Block Metrology, (30 September 1998); https://doi.org/10.1117/12.323117

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