Characterization of High Temperature Strength of Si3N4 Composite Ceramics According to the Amount of SiO2 Nano Colloidal Added
Creators
- 1. Pukyong National University, Busan (Korea, Republic of)
- 2. National Research Council of Canada, Ottawa (Canada)
Description
This study analyzed the characterization of high temperature strength of Si3N4 composite ceramics additive based on variations in the amount of nano colloidal SiO2 added. Semi-elliptical cracks about 100 μm length were obtained from a Vickers indenter using a load of 24.5 N. The results showed that the heat-treated smooth specimens with SiO2 nano colloidal coating exhibited the highest bending strength at 0.0 wt% SiO2 nano colloidal added, which is amounted to a 187 % increase over that of smooth specimen. Limiting temperature for bending strength of crack-healed zone for bending strength was about 1273 K. However, the bending strength of SSTS-3 and SSTS-4 was considerably increased while that of SSTS-1 and SSTS-2 was decreased at a temperature of 1,573K
Additional details
Publishing Information
- Journal Title
- Transactions of the Korean Society of Mechanical Engineers. A
- Journal Volume
- 33
- Journal Issue
- 11
- Series
- 17 refs, 7 figs, 2 tabs
- Journal Page Range
- p. 1233-1238
- ISSN
- 1226-4873
INIS
- Country of Publication
- Korea, Republic of
- Country of Input or Organization
- Korea, Republic of
- INIS RN
- 43121353
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BENDING; CERAMICS; CRACKS; SILICON ALLOYS
- Descriptors DEC
- ALLOYS; DEFORMATION