Noncontact method of thermal linear expansion coefficient determination for various materials in temperature range 500 to 2500°C

• Дата: 2004
• Автори: Borzukh, A.S., Popov, V.P., Savchenko, V.S., Skibina, L.V., Chernik, M.M., Yushchenko, K.A.
• Формат: Стаття
• Мова: English
• Опубліковано: НТК «Інститут монокристалів» НАН України 2004
• Назва видання: Functional Materials
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/134885
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Noncontact method of thermal linear expansion coefficient determination for various materials in temperature range 500 to 2500°C / A.S. Borzukh, V.P. Popov, V.S. Savchenko, L.V. Skibina, M.M. Chernik, K.A. Yushchenko // Functional Materials. — 2004. — Т. 11, № 1. — С. 221-224. — Бібліогр.: 3 назв. — англ.

A noncontact method has been developed to determine the thermal linear expansion coefficient (TLEC) of carbon-graphite and ceramic materials and heat-resistant alloys in a temperature range of 500 to 2500 °C. The setup and its functional potentialities are shown schematically. The TLEC values measured on primary standard specimens (electrolytic nickel and commercial APB graphite) differ by at most 5 % from literature reference data. Experimental temperature dependences of relative elongation and TLEC for the high-temperature Rene 80 alloy in the 500-1200 °C interval are presented. A hysteresis is revealed in the Al/l(T) dependence, which is connected with the cooling-induced formation and heating-induced dissolution of the ordered /-phase (Ni3AI).