Effect of Additives on the Densification Processes and Properties of Silica-Based CMCs

• Autorzy: Ko S.-Y. , Yong S.-M. , Lee S. J. , Cheong D.-I. , Baek S.

Identyfikatory

DOI

10.24425/123835

• Języki publikacji: EN

Abstrakty

EN

The effect of additives on the densification behavior and mechanical properties of pure and additive (Zr, B and Mg)-added silica ceramics were investigated for their application to the matrix phase of a silica fiber reinforced silica (SiO₂ /SiO_2f ) composite. The additives affected the rate of densification and crystallization (or transformation) of the amorphous silica. Among the compositions, pure silica ceramics sintered at 900°C for 1h showed the maximum flexural strength. Based on the results, SiO₂ /SiO_2f was fabricated by a repeated vacuum-assisted infiltration method followed by the heat treatment at 900°C for 1h. The relative density of the composite was 78.2% with a flexural strength of 22.4 MPa. Fractography revealed that the composite was damaged by strong bonding at the fiber/matrix interface and the fracture of fiber.

Słowa kluczowe

EN

ceramic matrix composite; CMC; silica; densification; mechanical properties

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2018
• Tom: Vol. 63, iss. 3
• Strony: 1485--1488
• Opis fizyczny: Bibliogr. 10 poz., rys., tab., wykr.

Twórcy

autor

Ko S.-Y.

• The 4th Research and Development Insititute-4, Agency for Defense Development (ADD), Yuseong P.O. Box 35, Daejeon 34060, Republic of Korea

autor

Yong S.-M.

• The 4th Research and Development Insititute-4, Agency for Defense Development (ADD), Yuseong P.O. Box 35, Daejeon 34060, Republic of Korea

autor

Lee S. J.

• The 4th Research and Development Insititute-4, Agency for Defense Development (ADD), Yuseong P.O. Box 35, Daejeon 34060, Republic of Korea

autor

Cheong D.-I.

• The 4th Research and Development Insititute-4, Agency for Defense Development (ADD), Yuseong P.O. Box 35, Daejeon 34060, Republic of Korea

autor

Baek S.

• The 4th Research and Development Insititute-4, Agency for Defense Development (ADD), Yuseong P.O. Box 35, Daejeon 34060, Republic of Korea

Bibliografia

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• [5] N. P. Bansal, Kluwer Academic Publishers, Handbook of Ceramic Composites, Boston (2005).
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Uwagi

EN

1. This work was supported by DAPA and ADD.

PL

2. Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).