Ma ke kahua o ka pale ʻana i kēia manawa, me ka hoʻomau mau ʻana o ka mana o ka mea kaua, ke piʻi nei ka paʻakikī o nā koi no nā mea pale.Silicon carbide, he mea maʻamau akā ikaika loa, ke puka mālie nei ma ke ʻano he punahele hou i ka ʻoihana pale pōkā. I kēia lā, e wehe mākou i ka pale pohihihi o ka pōkā kalapona silika.
1、 Ka wehe ʻana i ka loina pale pōkā
Aia ke kumu o ka pale kaua i ka hoʻopau ʻana i ka ikehu o nā projectiles, e hoʻolohi iā lākou a hiki i ka nalowale ʻana o ka pōʻino. Ke hilinaʻi nei nā mea metala kuʻuna i ka hoʻololi ʻana i ka plastic no ka hoʻomoʻa ʻana i ka ikehu, ʻoiai nā mea seramika e hoʻokō i kēia pahuhopu ma o ke kaʻina hana micro crushing. ʻO ka lawe ʻana i nā seramika pale pōkā silicon carbide ma ke ʻano he laʻana, i ka wā e pā ai ka projectile, e lilo mua ka projectile i pōpō koke ma luna o ka ʻili o ka hopena, a ʻoki ʻia ka ʻili seramika e hana i kahi ʻāpana paʻakikī. ʻO kēia kaʻina hana e like me ka hāʻawi ʻana i ka projectile i ka "hammer" a me ka hoʻomaka ʻana i ka ikehu; A laila, hoʻomau ka neʻe ʻana o ka projectile pōpō i mua, e hoʻopau ana i ka ʻāpana ʻāpana a hana i kahi papa mau o nā ʻāpana ceramic; ʻO ka mea hope loa, nā haʻihaʻi seramika ma lalo o ke koʻikoʻi tensile, a hoʻomaka ke kua i ka deform. Hoʻopili piha ʻia ka ikehu i koe e ka deformation o ka mea backplate.
2 、 No ke aha e hiki ai i ka carbide silika ke pale i ka pōkā?
ʻO ka Silicon carbide kahi pūhui i haku nui ʻia me nā paʻa covalent, a hiki i kāna mau paʻa Si-C ke mālama i ka ikaika kiʻekiʻe i nā wela kiʻekiʻe. Hāʻawi kēia ʻano hana ʻokoʻa i nā seramika silicon carbide me nā waiwai maikaʻi loa. He kiʻekiʻe loa kona paʻakikī, ʻelua wale nō i ke daimana, cubic boron nitride, a me ka boron carbide ma waena o nā mea maʻamau. Ua like ia me ke koa e ʻaʻahu ana i ka pale kaua paʻakikī, hiki ke pale ikaika i ka hopena projectile; I ka manawa like, he haʻahaʻa kona haʻahaʻa a ʻoi aku ka maʻalahi o ke kaumaha ke hana ʻia i mea pale pōkā. Inā no ka hakakā hoʻokahi a i hoʻolako ʻia paha i nā kaʻa a me nā mokulele, ʻaʻole ia e lilo i mea kaumaha, akā hiki ke hoʻomaikaʻi i ka neʻe ʻana o nā ʻāpana kaua. Eia kekahi, ʻoi aku ka maikaʻi o ka carbide silicon a me ke kūpaʻa corrosion kemika, a hiki ke hoʻokani paʻa i kahi hana pale i nā ʻano paʻakikī.
3、 ʻO nā pono kūʻokoʻa o ka carbide silicon sintered i nā ʻāpana i hana ʻia
I ka hoʻomākaukau ʻana o ka silicon carbide ceramics, kū i waho ka reaction sintered silicon carbide (RBSiC), ʻoi aku ka kūpono no ka hana ʻāpana hana, no nā kumu aʻe:
1. Kiʻekiʻe kiʻekiʻe a me ka ikaika kiʻekiʻe: Ma lalo o nā kūlana wela kiʻekiʻe, hoʻololi ke kalapona manuahi me ka silika wai e hana i nā kristal carbide silicon hou. I ka manawa like, komo ka silicon manuahi a hoʻopiha i nā pores, e hoʻonui nui ana i ka density o ka mea, kokoke kokoke i ka theoretical density. ʻAʻole wale kēia e hāʻawi i ka mea me ka ikaika compressive a me ke kulou maikaʻi ʻana, akā hāʻawi pū kekahi i ke kūpaʻa ʻaʻahu maikaʻi, hiki ke kū i ke kiʻekiʻe kiʻekiʻe a me nā kūlana hopena kiʻekiʻe, e hoʻokō i nā koi koʻikoʻi o nā ʻāpana i hana ʻia no ka ikaika a me ka lōʻihi.
2. ʻO ka microstructure hiki ke hoʻopaʻa ʻia: Hiki i ke kaʻina hana sintering ke hoʻomalu pono i ka ulu ʻana o ka palaoa, e hana ana i nā microstructure liʻiliʻi a like. Hoʻonui hou kēia microstructure maikaʻi i nā waiwai mechanical o ka mea, hiki iā ia ke noho paʻa a liʻiliʻi i ka haki ʻana a i ʻole ka pōʻino i ka wā e kū ana i nā koʻikoʻi paʻakikī, e hāʻawi ana i kahi hōʻoia paʻa no ka hilinaʻi o nā ʻāpana i hana ʻia.
3. Kiʻekiʻe dimensional pololei: I ka wā o ka densification kaʻina, ka nui hoʻololi o ka hoʻololi sintered silicon carbide he mea liʻiliʻi, he mea koʻikoʻi no nā ʻāpana i hana ʻia. Inā paha he pūʻolo pale pōkā hoʻokahi me nā ʻano paʻakikī a i ʻole kahi mea pale kaʻa kūikawā me nā koi nui koʻikoʻi, hiki ke hana pololei ʻia lākou e hōʻoia i ka hoʻohālikelike kūpono me nā mea hana.
4. Paʻa kemika maikaʻi: Aneane ʻaʻohe pores i wehe ʻia i ka carbide silicon reaction, e paʻakikī i ka oxygen a me nā mea corrosive ke komo i loko o ka mea, no laila e loaʻa ai ka oxidation ikaika loa a me ka pale ʻana i ka corrosion. ʻO ia ke ʻano o nā huahana pōkā kalapona silicon i hoʻopaʻa ʻia e hiki ke hoʻomau i ka hana paʻa, hoʻonui i ke ola lawelawe, a hoʻemi i nā kumukūʻai mālama i nā wahi kūlohelohe kūlohelohe a i ʻole kemika no ka manawa lōʻihi.
4、 Silicon carbide bulletproof kahua noi
Me kāna hana maikaʻi loa, ua hoʻohana nui ʻia nā mea pale pale silicon carbide i nā kula he nui:
1. Nā lako hoʻokahi: silicon carbide bulletproof vest lining, bulletproof helmet, etc., hāʻawi i nā koa me ka māmā a me ka pale kiʻekiʻe, e ʻae iā lākou e hakakā maʻalahi ma ke kahua kaua me ka palekana palekana.
2. ʻO nā kaʻa kūikawā: e like me nā kaʻa kaua, nā kaʻa lawe kālā, anti-terrorism a me nā kaʻa hoʻomalu haunaele, a me nā mea ʻē aʻe, ua hoʻolako ʻia me ka silicon carbide ceramic pale kaua i nā ʻāpana nui, hiki ke pale pono i nā mea kaua like ʻole a pale i ka palekana o nā limahana a me nā mea koʻikoʻi i loko o ke kaʻa.
3. Aerospace: Hoʻohana ʻia nā mea pōkā pōkā Silicon carbide ma nā helikopa a me nā mokulele ʻē aʻe e hoʻemi i ko lākou kaumaha ponoʻī, hoʻomaikaʻi i ka hana lele, a hoʻonui i ko lākou hiki ke pale aku i ke ahi ʻenemi, e hōʻoiaʻiʻo ana i ka palekana o ka lele.
Me ka hoʻomau mau ʻana o ka ʻenehana, e hoʻomau ka hoʻomohala ʻana a me ka hana hou ʻana o nā mea pōkā silicon carbide, e kūkulu ana i kahi laina pale ikaika no ka pale palekana. Inā makemake ʻoe i nā ʻāpana i hoʻopilikino ʻia o ka hopena sintered silicon carbide ceramics, e ʻoluʻolu e hoʻokaʻaʻike mai iā mākou.
Ka manawa hoʻouna: Jun-06-2025