Development of Young's Modulus of Illitic Clay during Heating up to 1100 degrees C

作者：Hulan Tomas^*; Trnik Anton; Stubna Igor; Bacik Peter; Kaljuvee Tiit; Vozar Libor

来源：Materials Science-Medziagotyra, 2015, 21(3): 429-434.

DOI：10.5755/j01.ms.21.3.7152

• illite
• Young's modulus
• physically bound water
• dehydroxylation
• sintering

Young's modulus of green illite from Fuzerradvany (Hungary) was measured in-situ in the temperature interval 20 degrees C-1100 degrees C and auxiliary analyses DTA, TG and TDA, XRD and EGA, were also performed. It was found that a removal of the physically bound water (20 degrees C-250 degrees C) sets illite crystals closer, which leads to a significant increase of Young's modulus from its initial value of 7 GPa to the maximum 12 GPa at 300 degrees C. Young's modulus slightly decreases in the temperature interval of dehydroxylation of illite (300 degrees C-800 degrees C), and which then reaches up to 45 GPa at 1100 degrees C, increasing exponentially as a consequence of the sintering above 800 degrees C.

• 出版日期2015