Flexural strength of ceramic materials exposed to Pb-16Li at elevated temperatures

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F24%3AN0000018" target="_blank" >RIV/26722445:_____/24:N0000018 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0920379624003661" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0920379624003661</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.fusengdes.2024.114513" target="_blank" >10.1016/j.fusengdes.2024.114513</a>

Result language

angličtina

Original language name

Flexural strength of ceramic materials exposed to Pb-16Li at elevated temperatures

Original language description

Flow channel inserts (FCI) are functional components designed to minimize the magnetohydrodynamic pressure drop and also serve as a thermal and tritium permeation barrier. In the simplified design of the FCI component, the ceramic is directly exposed to contact with Pb-16Li at elevated temperature. As the FCI must withstand mechanical stresses resulting from the thermal gradient during the demanding operation, the assessment of mechanical response of ceramic in contact with Pb-16Li is essential. Pristine Al2O3 and SiSiC were subjected to three-point bending at room temperature and at 650 °C in argon. While SiSiC showed no change in flexural strength at both temperatures, flexural strength of Al2O3 decrease when the test temperature was increased. Inspection of the fracture surfaces revealed mixture of intergranular and transgranular brittle fracture for both materials in investigated temperature range. Pre-exposed samples were tested at 650 °C in liquid Pb-16Li to assess the effect of mechanical strength degradation caused by Pb-16Li. Testing of the pre-exposed Al2O3 samples showed the similar flexural strengths to the unexposed ones. In the case of SiSiC, the sample exposure resulted in decrease of the flexural strength. The analysis of the pre-exposed tested samples revealed deteriorated surface by Pb-16Li only in the case of SiSiC.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20501 - Materials engineering

Project

<a href="/en/project/9D22001" target="_blank" >9D22001: Implementation of activities described in the Roadmap to Fusion during Horizon Europe through a joint programme of the members of the EUROfusion consortium</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Fusion Engineering and Design

ISSN

0920-3796

e-ISSN

1873-7196

Volume of the periodical

204

Issue of the periodical within the volume

July

Country of publishing house

CH - SWITZERLAND

Number of pages

5

Pages from-to

1-5

UT code for WoS article

001244892600001

EID of the result in the Scopus database

2-s2.0-85193568793