The aim of this work was to investigate and discuss the microstructure and interface reaction of a calciaalumina based glass-ceramic (CA) with SiC. CA has been used for several years as a glass-ceramic for pressure-less joining of SiC based components. In the present work, the crystalline phases in the CA glass-ceramic and at the CA/SiC interface were investigated and the absence of any detectable amorphous phase was assessed. In order to provide a better understanding of the effect of irradiation on the joining material and on the joints, Si ion irradiationwas performed both on bulk CA and CA joined SiC. CA glass-ceramic and CA joined SiC were both irradiated with 5.1 MeV Si2þ ions to 3.3 1020 ions/m2 at temperatures of 400 and 800 C at DuET facility, Kyoto University. This corresponds to a damage level of 5 dpa for SiC averaged over the damage range. This paper presents the results of a microstructural analysis of the irradiated samples as well as an evaluation of the dimensional stability of the CA glassceramic and its irradiation temperature and/or damage dependence.

CaO-Al 2 O 3 glass-ceramic as a joining material for SiC based components: A microstructural study of the effect of Si-ion irradiation / Casalegno, Valentina; Kondo, Sosuke; Hinoki, Tatsuya; Salvo, Milena; Czyrska-Filemonowicz, Aleksandra; Moskalewicz, Tomasz; Katoh, Yutai; Ferraris, Monica. - In: JOURNAL OF NUCLEAR MATERIALS. - ISSN 0022-3115. - 501:(2018), pp. 172-180. [10.1016/j.jnucmat.2018.01.033]

CaO-Al 2 O 3 glass-ceramic as a joining material for SiC based components: A microstructural study of the effect of Si-ion irradiation

Casalegno, Valentina;Hinoki, Tatsuya;Salvo, Milena;Ferraris, Monica
2018

Abstract

The aim of this work was to investigate and discuss the microstructure and interface reaction of a calciaalumina based glass-ceramic (CA) with SiC. CA has been used for several years as a glass-ceramic for pressure-less joining of SiC based components. In the present work, the crystalline phases in the CA glass-ceramic and at the CA/SiC interface were investigated and the absence of any detectable amorphous phase was assessed. In order to provide a better understanding of the effect of irradiation on the joining material and on the joints, Si ion irradiationwas performed both on bulk CA and CA joined SiC. CA glass-ceramic and CA joined SiC were both irradiated with 5.1 MeV Si2þ ions to 3.3 1020 ions/m2 at temperatures of 400 and 800 C at DuET facility, Kyoto University. This corresponds to a damage level of 5 dpa for SiC averaged over the damage range. This paper presents the results of a microstructural analysis of the irradiated samples as well as an evaluation of the dimensional stability of the CA glassceramic and its irradiation temperature and/or damage dependence.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2699119
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