ABSTRACT
Dilatometry and interferometry are techniques used for measuring the change in length of a specimen as a function of temperature. They are useful for studying a myriad of materials' behavior, such as martensitic transformations in the quenching of steels, the shrinkage from a green ceramic body during binder burnout and sintering, glass transformation temperature, devitrification in glasses, and solid-state transformations such as the a to f3 quartz inversion. In this chapter, dilatometry, the more common and commercially available technique, will first be treated. Discussion of the more precise, but experimentally more cumbersome interferometry technique will be left to the end of the chapter.
