| 摘要 |
PROBLEM TO BE SOLVED: To obtain a boron carbide sintered compact applicable to various uses, having a high strength and a high toughness. SOLUTION: This boron carbide sintered compact is characterized by having <=3 μm maximum particle size of boron carbide and yet >=600 MPa four-point flexural strength. Preferably the boron carbide sintered compact is characterized by comprising 5-25 atom % of chromium diboride and having >=3.0 MPam1/2 fracture toughness value. |
