Boron Carbide
Boron Carbide
| Nā inoa ʻē aʻe | Tetrabora |
| Cas No. | 12069-32-8 |
| ʻO ke kumu hoʻohālike | B4C |
| Molar mass | 55.255 g/mol |
| Ka nana aku | ʻEleʻele ʻeleʻele a i ʻole ka pauka ʻeleʻele, ʻaʻala ʻole |
| ʻO ka mānoanoa | 2.50 g/cm3, paʻa. |
| Lae hehee | 2,350 °C (4,260 °F; 2,620 K) |
| Lae paila | >3500 °C |
| Solubility i ka wai | ʻAʻole hiki ke hoʻoheheʻe |
Na Waiwai Mechanical
| Knoop Hardness | 3000 kg/mm2 | |||
| Mohs Paʻakikī | 9.5+ | |||
| Ikaika Flexural | 30~50 kg/mm2 | |||
| Hoʻopiʻi | 200~300 kg/mm2 | |||
ʻIkepili ʻoihana no ka Boron Carbide
| 'ikamu helu. | Maʻemaʻe (B4C %) | Huaʻai kumu(μm) | Huina Borona(%) | Huina Carbide(%) |
| UMBC1 | 96~98 | 75~250 | 77~80 | 17~21 |
| UMBC2.1 | 95~97 | 44.5~75 | 76~79 | 17~21 |
| UMBC2.2 | 95~96 | 17.3~36.5 | 76~79 | 17~21 |
| UMBC3 | 94~95 | 6.5~12.8 | 75~78 | 17~21 |
| UMBC4 | 91~94 | 2.5~5 | 74~78 | 17~21 |
| UMBC5.1 | 93~97 | Max.250 150 75 45 | 76~81 | 17~21 |
| UMBC5.2 | 97~98.5 | Max.10 | 76~81 | 17~21 |
| UMBC5.3 | 89~93 | Max.10 | 76~81 | 17~21 |
| UMBC5.4 | 93~97 | 0~3mm | 76~81 | 17~21 |
He aha ka Boron Carbide (B4C) i hoʻohana ʻia no?
No kona paakiki:
ʻO nā waiwai koʻikoʻi o Boron Carbide, nā mea hoihoi i ka mea hoʻolālā a i ʻole ka ʻenekinia, ʻo ia ka paʻakikī a me ke kūpaʻa abrasive e pili ana. ʻO nā hiʻohiʻona maʻamau o ka hoʻohana maikaʻi loa ʻana i kēia mau waiwai: Padlocks; ʻO ka pale kaua anti-ballistic pilikino a me ka kaʻa; ʻO nā nozzles hoʻoheheʻe ʻia; Nā nozzles ʻoki ʻoki wai kiʻekiʻe; ʻO ka ʻōpala a me ka ʻaʻahu ʻana i nā pale pale; ʻOki ʻoki a make; Abrasive; Metala matrix composites; I loko o nā kaʻa kaʻa.
No kona paʻakikī:
Hoʻohana ʻia ʻo Boron carbide e hana i nā mea pale pale e pale aku i ka hopena o nā mea ʻoi e like me nā pōkā, shrapnel, a me nā missiles. Hoʻohui pinepine ʻia me nā composites ʻē aʻe i ka wā e hana ai. Ma muli o kona paʻakikī kiʻekiʻe, paʻakikī ka pale kaua B4C i ka pōkā e komo. Hiki i nā mea B4C ke komo i ka ikaika o ka pōkā a laila hoʻopau i ka ikehu. E naha ana ka ili a lilo i mau mea liilii a paakiki mahope. ʻO ka hoʻohana ʻana i nā mea boron carbide, nā koa, nā pahu, a me nā mokulele hiki ke pale i nā ʻeha nui mai nā pōkā.
No nā waiwai ʻē aʻe:
ʻO ka Boron carbide he mea hoʻohana nui ia i nā mea kanu nuklea no kona hiki ke hoʻopaʻa i ka neutron, ke kumu kūʻai haʻahaʻa, a me ke kumu nui. He kiʻekiʻe absorption cross-section. ʻO ka hiki o ka boron carbide ke komo i nā neutrons me ka hana ʻole ʻana i nā radionuclides lōʻihi e lilo ia i mea hoʻoheheʻe no ka hoʻoheheʻe neutron e kū mai ana i loko o nā mea kanu nuklea a me nā pōkā neutron anti-personnel. Hoʻohana ʻia ʻo Boron Carbide no ka pale ʻana, ma ke ʻano he koʻokoʻo hoʻomalu i ka reactor nuklea a me ka hoʻopaʻa ʻana i nā pellets i kahi mea kanu nuklea.