| abstract |
Disclose a kind of method that boron carbide powder by comprising the boron carbide particles scribbling titanium compound manufactures solid articles.There is further disclosed herein the unique advantage that titanium that conbined usage is water-soluble species form and graphite additive improve the mixing uniformity under green state.Carbon acceleration of sintering, then its concentration reduces in the process forming very hard, finely disseminated TiB2 phase.The value of the sintered heat insulating temperature under having recognized narrow size-grade distribution B4C powder further and having used rate of closed hole threshold value, it achieves rear hot isostatic pressing (post-HIPed) microstructure, and mean grain size reaches original median particle.The combination of complementary factor has caused the goods based on B4C higher than the hardness previously reported. |