Effects of B4C addition on the microstructural and thermal properties of hot pressed SiC ceramic matrix composites

• Autorzy: Keçeli Z. , Ögünç H. , Boyraz T. , Gökçe H. , Addemir O. , Lütfi Öveçođlu M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The purpose of paper is to evaluate effects of B4C addition on the microstructural and thermal properties of hot pressed SiC ceramic matrix composites. Design/methodology/approach: The effect of B4C addition on microstructural and thermal properties of the SiC-B4C powder composites were investigated after high energy milling and hot pressing. SiC powders containing 5wt%, 10wt%, 15wt% B4C were mechanically alloyed in a high energy ball mill for 8 h. Findings: Microstructural characterisation investigations (SEM, XRD) were carried out on mechanically alloyed SiC powder composites containing 5 wt %, 10 wt %, 15 wt % B4C powders and on these powder composites sintered in vacuum at 50 MPa at 2100şC. The thermal properties were characterised using DTA, TGA and dilatometer. The results were evaluated. Research limitations/implications: In this study, the effect of B4C addition on microstructural and mechanical properties of the SiC-B4C powder composites was investigated after high energy milling and hot pressing. Originality/value: Ceramic matrix composite (CMC) material systems are stimulating a lot of interest to be used and provide unique properties for aircraft and land-based turbine engines, defence applications, rocket motors, aerospace hot structures and industrial applications. Boron carbide (B4C)-silicon carbide (SiC) ceramic composites are very promising armour materials because they are intrinsically very hard. Advanced SiC-based armour is desired so that the projectile is completely defeated without penetrating the ceramic armour.

Słowa kluczowe

EN

ceramic matrix composite; hot pressing

PL

kompozyt ceramiczny; wytłaczanie na gorąco

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2009
• Tom: Vol. 37, nr 2
• Strony: 428--433
• Opis fizyczny: Bibliogr. 19 poz., rys., tabl.

Twórcy

autor

Keçeli Z.

autor

Ögünç H.

autor

Boyraz T.

autor

Gökçe H.

autor

Addemir O.

autor

Lütfi Öveçođlu M.

• Metallurgical and Materials Engineering Department, Istanbul Technical University, 34469 Maslak Istanbul, Turkey,

Bibliografia

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