Processing of Boron Carbide‐Aluminum Composites

TY - JOUR

T1 - Processing of Boron Carbide‐Aluminum Composites

AU - Halverson, Danny C.

AU - Pyzik, Aleksander J.

AU - Aksay, Ilhan A.

AU - Snowden, William E.

PY - 1989/5

Y1 - 1989/5

N2 - The processing problems associated with boron carbide and the limitations of its mechanical properties can be significantly reduced when a metal phase (e.g., aluminum) is added. Lower densification temperatures and higher fracture toughness will result. Based on fundamental capillarity ther modynamics, reaction thermodynamics, and densification kinetics, we have established reliable criteria for fabricating B4C–Al particulate composites. Because chemical reactions cannot be eliminated, it is necessary to process B4C–AI by rapidly heating to near 1200°C (to ensure wetting) and subsequently heat‐treating below 1200°C (for microstructural development).

AB - The processing problems associated with boron carbide and the limitations of its mechanical properties can be significantly reduced when a metal phase (e.g., aluminum) is added. Lower densification temperatures and higher fracture toughness will result. Based on fundamental capillarity ther modynamics, reaction thermodynamics, and densification kinetics, we have established reliable criteria for fabricating B4C–Al particulate composites. Because chemical reactions cannot be eliminated, it is necessary to process B4C–AI by rapidly heating to near 1200°C (to ensure wetting) and subsequently heat‐treating below 1200°C (for microstructural development).

KW - aluminum

KW - boron carbide

KW - cermets

KW - composites

KW - processing

UR - https://www.scopus.com/pages/publications/0024663151

UR - https://www.scopus.com/pages/publications/0024663151#tab=citedBy

U2 - 10.1111/j.1151-2916.1989.tb06216.x

DO - 10.1111/j.1151-2916.1989.tb06216.x

M3 - Article

SN - 0002-7820

VL - 72

SP - 775

EP - 780

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 5

ER -