Super-hard boron carbide/silicon carbide composites by reactive infiltration

• Autorzy: Frage N. , Prigozin H. , Dariel M.P.

Warianty tytułu

PL

Supertwardy materiał kompozytowy borek krzemu/ węglik krzemu wytworzony metodą reaktywnej infiltracji

• Konferencja: Advanced Materials and Technologies, AMT'2004 : XVII Physical Metallurgy and Materials Science Conference (XVII; 20-24.06.2004; Łódź, Polska)
• Języki publikacji: EN

Abstrakty

EN

Metal-ceramic composites based on B4C and SiC phases were obtain by infiltration of porous boron carbide preforms, enriched with free carbon, by silicon melt. Sugar as a precursor for free carbon was used. Porous boron carbide preforms with 35% porosity were infiltrated with sugar solution (100 gram sugar in 100 ml water). The sugar pyrolyse was performed at 500°C under argon. After the pyrolysis the preforms with 12 %wt. of free carbon were infiltrated with silicon at 1480°C under vacuum of 10^-4 torr. The resulted composites show homogeneous structure consisting of interconnected boron carbide and silicon carbide particles with 10%vol. of residual silicon. The hardness of the composites is about 2700HV and the elastic modulus is about 350GPa.

Słowa kluczowe

EN

B4C; SiC; sugar; pyrolysis; reactive infiltration

PL

materiały kompozytowe; węglik czteroboru; węglik krzemu; piroliza; infiltracja reaktywna

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Inżynieria Materiałowa
• Rocznik: 2004
• Tom: R. XXV, nr 3
• Strony: 278--279
• Opis fizyczny: Bibliogr. 3 poz., rys.

Twórcy

autor

Frage N.

• Materials Engineering Department, Ben-Gurion University of the Negev, Beer-Sheva, Israel

autor

Prigozin H.

• Materials Engineering Department, Ben-Gurion University of the Negev, Beer-Sheva, Israel

autor

Dariel M.P.

• Materials Engineering Department, Ben-Gurion University of the Negev, Beer-Sheva, Israel

Bibliografia

• [1] Thevenot F.. Boron carbide - a comprehensive review, Journal of the European Ceramic Society, Vol. 6 (1990) pp. 205-225.
• [2] Xing W., Xue J. S.. Dahn J. R., Optimizmg pyrolysis of sugar carbons for use as anode materials in lithium-ion batteries, Journal of the Electrochemical Society, Vol. 18 (1996). pp. 3046-3052.
• [3] Ting-Kuo Fey G., Yun-Chien Kao. Synthesis and characterization of pyrolyzed sugar carbons under nitrogen or argon atmospheres as anode materials for lithium-ion batteries. Materiał Chemistry and Physics, Vol. 73 (2002), pp. 37-46.