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Influence of free carbon on the Young's modulus and hardness of polymer‐derived silicon oxycarbide glasses
Author(s) -
Sorarù Gian Domenico,
Kundanati Lakshminath,
Santhosh Balanand,
Pugno Nicola
Publication year - 2019
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.16131
Subject(s) - materials science , modulus , silicon , polymer , carbon fibers , composite material , young's modulus , pyrolysis , chemical engineering , metallurgy , composite number , engineering
Abstract Silicon oxycarbide (Si OC ) glasses in the form of thin, dense, and crack‐free samples were fabricated according to the polymer pyrolysis route starting from cross‐linked polysiloxane. The amount of free carbon in the final Si OC materials was varied in the range 18‐60 vol%. The mechanical properties of the SiOC glasses were measured by nanoindentaion technique and revealed that both the Young's modulus and the hardness decrease with increase in the free carbon content and follow a simple rule of mixtures model.