Microstructural Coarsening During Sintering of Boron Carbide

Journal of the American Ceramic Society - Tập 72 Số 6 - Trang 958-966 - 1989
S. L. Dole1, S. Procházka1, Robert H. Doremus1
1Research and Development Center, General Electric Company Schenectady, New York 12301

Tóm tắt

The sintering behavior of boron carbide was investigated with particular attention given to microstructure development at various stages in the sintering process. Hot‐pressing and pressureless sintering techniques were employed and the effects of heating rate, firing atmosphere, and composition were used to characterize the sintering behavior. Pressureless sintering at temperatures up to 2300°C produces only limited densification. Microstructural coarsening is responsible for this since it leads to conditions where densification is slow. Hot‐pressing and carbon additions suppressed coarsening and permitted densification to >95% of theoretical density.

Từ khóa


Tài liệu tham khảo

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Thông tin
Thông tin xuất bản

Journal of the American Ceramic Society

Tập 72 Số 6

958-966

Thông tin tác giả