Recent research and prospects of thermal expansion studies : standard manerials

Abstract

The paper describes the metrological activity of the D.I. Mendeleyev Institute for Metrology (S.- Petersburg, Russia) in the field of dilatometric research of solids. The measurement ability nowadays are as follows: from 90K up to 3000K, the TEC value can be determined with accuracy up to 0,2 10-8 K-1. Also the attention is paid to the standard reference materials and the standard samples of Thermal Expansion.