Kupanga Njira Zopangira Silicon Carbide Ceramics

Kupanga Njira Zopangira Silicon Carbide Ceramics: Chidule Chachidule

Mapangidwe apadera a kristalo ndi katundu wa silicon carbide ceramics amathandizira pazabwino zake. Ali ndi mphamvu zabwino kwambiri, kuuma kwambiri, kukana kuvala bwino, kukana dzimbiri, kukhathamiritsa kwakukulu kwamafuta komanso kukana kugwedezeka kwamafuta. Zinthu izi zimapangitsa kuti silicon carbide ceramics ikhale yabwino pakugwiritsa ntchito ballistic.

Kupanga silicon carbide ceramics nthawi zambiri kumatengera njira zotsatirazi:

1. Kumangirira: Kumangirira ndi njira yomwe imagwiritsidwa ntchito kwambiri popanga mapepala a silicon carbide bulletproof. Njirayi ndi yosavuta, yosavuta kugwiritsa ntchito, yokwera kwambiri komanso yoyenera kupanga mosalekeza.

2. Jekeseni akamaumba: jekeseni akamaumba ali kwambiri kusinthasintha ndipo akhoza kupanga akalumikidzidwa zovuta ndi zomangira. Njirayi ndiyothandiza makamaka popanga zida za ceramic zooneka ngati silicon carbide.

3. Cold isostatic kukanikiza: Kuzizira kwa isostatic kukanikiza kumaphatikizapo kugwiritsa ntchito mphamvu ya yunifolomu ku thupi lobiriwira, zomwe zimapangitsa kuti pakhale kugawidwa kofanana. Ukadaulo uwu umathandizira kwambiri magwiridwe antchito azinthu ndipo ndi oyenera kupanga zoumba zapamwamba za silicon carbide.

4. Kumangirira jakisoni wa gel: Kujambula kwa jekeseni wa gel ndi njira yatsopano yopangira kukula kwa ukonde. Thupi lobiriwira lomwe limapangidwa limakhala ndi mawonekedwe ofanana komanso mphamvu zambiri. The anapezedwa mbali ceramic akhoza kukonzedwa ndi makina osiyanasiyana, amene amachepetsa mtengo processing pambuyo sintering. Kumangira jekeseni wa gel ndikoyenera makamaka kupanga zoumba za silicon carbide zokhala ndi zovuta.

Pogwiritsa ntchito njira zopangira izi, opanga amatha kupeza zoumba zapamwamba za silicon carbide zokhala ndi zida zabwino kwambiri zamakina. Kutha kupanga silicon carbide ceramics mumitundu yosiyanasiyana ndi mapangidwe amalola kusinthika ndi kukhathamiritsa kuti akwaniritse zofunikira zamitundu yosiyanasiyana.

Kuphatikiza apo, kukwera mtengo kwa zoumba za silicon carbide kumawonjezera kukopa kwake ngati chinthu chogwira ntchito kwambiri cholimbana ndi ballistic. Kuphatikizika kwa zinthu zofunika izi ndi mtengo wokwanira kumapangitsa zoumba za silicon carbide kukhala zolimbana mwamphamvu m'malo a zida zankhondo.

Pomaliza, zoumba za silicon carbide ndizo zida zotsogola zotsogola chifukwa cha mawonekedwe awo abwino komanso njira zosunthika. Mapangidwe a kristalo, mphamvu, kuuma, kukana kuvala, kukana kwa dzimbiri, matenthedwe amafuta komanso kukana kwamafuta a silicon carbide ceramics kuwapangitsa kukhala chisankho chokongola kwa opanga ndi ofufuza. Ndi njira zosiyanasiyana zopangira, opanga amatha kupanga masinthidwe a silicon carbide kuti akwaniritse ntchito zenizeni, kuwonetsetsa kuti magwiridwe antchito ndi chitetezo chokwanira. Tsogolo la silicon carbide ceramics likulonjeza pamene akupitiriza kupanga ndikuchita bwino pamagulu a ballistic.

Ponena za chitetezo cha ballistic, kuphatikiza mapepala a polyethylene ndi zoyika za ceramic zatsimikizira kuti ndizothandiza kwambiri. Mwa njira zosiyanasiyana za ceramic zomwe zilipo, silicon carbide yakopa chidwi kwambiri kunyumba ndi kunja. M'zaka zaposachedwa, ofufuza ndi opanga akhala akuyang'ana kuthekera kwa silicon carbide ceramics ngati zinthu zogwira ntchito kwambiri zolimbana ndi ballistic chifukwa cha zinthu zake zabwino kwambiri komanso mtengo wake wotsika.

Silicon carbide ndi gulu lopangidwa ndi stacking Si-C tetrahedron, ndipo ili ndi mitundu iwiri ya kristalo, α ndi β. Pa kutentha kwa sintering pansi pa 1600 ° C, silicon carbide ilipo mu mawonekedwe a β-SiC, ndipo pamene kutentha kumapitirira 1600 ° C, silicon carbide imasandulika α-SiC. Chomangira cha covalent cha α-silicon carbide ndi cholimba kwambiri, ndipo chimatha kukhalabe chomangira champhamvu kwambiri ngakhale kutentha kwambiri.