B-O系超硬物質の合成と焼結 [in Japanese] Synthesis and Sintering of Super-hard Materials in the B-O System [in Japanese]
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A brief historical review of research concerning super-hard materials in the boron suboxide system is described with an emphasis on the synthesis and sintering of hexaboronoxide (B<SUB>6</SUB>O). Authors' investigations of the preparation of B<SUB>6</SUB>O-based super-hard materials are also described along with the formation behavior of B<SUB>6</SUB>O powder in a high temperature reaction between amorphous boron and B<SUB>2</SUB>O<SUB>3</SUB>. The structure and properties of the single phase B<SUB>6</SUB>O sintered compact obtained under high pressure are discussed in reference to the literature. The sintered composites in the B<SUB>6</SUB>O-B<SUB>4</SUB>C and B<SUB>6</SUB>O-cBN systems were prepared under high pressure and temperature conditions (3-6 GPa, 1500-1800Åé). The mechanical properties (hardness and toughness) and chemical stability are related to the phase relationship in the above quasi-two component systems and the microstructures of sintered composites.
- The Review of High Pressure Science and Technology
The Review of High Pressure Science and Technology 8(3), 185-192, 1998-08-20
The Japan Society of High Pressure Science and Technology