Publication detail

Stress relaxation in partially pyrolyzed SiOC materials

HALASOVÁ, M. CHLUP, Z. ČERNÝ, M. STRACHOTA, A. DLOUHÝ, I.

Original Title

Stress relaxation in partially pyrolyzed SiOC materials

English Title

Stress relaxation in partially pyrolyzed SiOC materials

Type

conference paper

Language

en

Original Abstract

This paper is focused on the difficulty with Vickers hardness evaluation of SiOC materials. To evaluate Vickers hardness properly, right measurements of diagonals of an indent are crucial. Due to stress-strain relaxation in experimental material it was challenging to evaluate it in the whole range of processing temperatures. Two preceramic precursors of commercialy available polysiloxane resins were pyrolysed in the temperature range from 400 to 1000C. It was found that within a certain range of pyrolysis temperature the material is almost fully elastic. Above this range the indents are clearly visible and indicate the level of polymer-ceramic conversion.

English abstract

This paper is focused on the difficulty with Vickers hardness evaluation of SiOC materials. To evaluate Vickers hardness properly, right measurements of diagonals of an indent are crucial. Due to stress-strain relaxation in experimental material it was challenging to evaluate it in the whole range of processing temperatures. Two preceramic precursors of commercialy available polysiloxane resins were pyrolysed in the temperature range from 400 to 1000C. It was found that within a certain range of pyrolysis temperature the material is almost fully elastic. Above this range the indents are clearly visible and indicate the level of polymer-ceramic conversion.

Keywords

polysiloxane; resin; SiOC; glass; ceramics; Vickers hardness; 3D reconstruction; indent; relaxation

RIV year

2015

Released

28.05.2015

Location

Brno

ISBN

978-80-214-5146-9

Book

MULTI-SCALE DESIGN OF ADVANCED MATERIALS

Pages from

100

Pages to

105

Pages count

154

Documents

BibTex


@inproceedings{BUT115857,
  author="Martina {Halasová} and Zdeněk {Chlup} and Martin {Černý} and Adam {Strachota} and Ivo {Dlouhý}",
  title="Stress relaxation in partially pyrolyzed SiOC materials",
  annote="This paper is focused on the difficulty with Vickers hardness evaluation of SiOC materials. To evaluate Vickers
hardness properly, right measurements of diagonals of an indent are crucial. Due to stress-strain relaxation in
experimental material it was challenging to evaluate it in the whole range of processing temperatures. Two
preceramic precursors of commercialy available polysiloxane resins were pyrolysed in the temperature range from 400 to 1000C. It was found that within a certain range of pyrolysis temperature the material is almost
fully elastic. Above this range the indents are clearly visible and indicate the level of polymer-ceramic
conversion.",
  booktitle="MULTI-SCALE DESIGN
OF ADVANCED MATERIALS
",
  chapter="115857",
  howpublished="online",
  year="2015",
  month="may",
  pages="100--105",
  type="conference paper"
}