Nzira dzekugadzira Silicon Carbide Ceramics

Nzira dzekugadzira Silicon Carbide Ceramics: Pfupiso Yakakwana

Maumbirwo akasiyana ekristaro uye hunhu hwesilicon carbide ceramics zvinobatsira muhunhu hwayo hwakanaka. Ine simba rakanaka, kuomarara kwakanyanya, kuramba kupfeka zvakanaka, kuramba ngura, kufambisa kupisa kwakanyanya uye kuramba kupisa kwakanaka. Hunhu uhwu hunoita kuti silicon carbide ceramics ive yakanaka pakushandiswa kwe ballistic.

Kugadzirwa kwesilicon carbide ceramics kunowanzo shandiswa nenzira dzinotevera:

1. Kuumba zvinhu zvine simba: Kuumba zvinhu zvine simba inzira inoshandiswa zvakanyanya pakugadzira mapepa esilicon carbide asingapindi mabara. Maitiro acho ari nyore, ari nyore kushandisa, anoshanda zvakanaka uye akakodzera kugadzirwa nguva dzose.

2. Kugadzira jekiseni: Kugadzira jekiseni kunogona kugadziriswa zvakanaka uye kunogona kugadzira maumbirwo akaomarara. Nzira iyi inobatsira zvikuru pakugadzira zvikamu zve ceramic zve silicon carbide zvine chimiro chakasarudzika.

3. Kudzvanya kweCold isostatic: Kudzvanya kweCold isostatic kunosanganisira kushandisa simba rakafanana mumuviri wegirini, zvichikonzera kupararira kwakafanana kwehuwandu. Iyi tekinoroji inovandudza zvikuru mashandiro echigadzirwa uye yakakodzera kugadzirwa kwesimbi dzesilicon carbide dzinoshanda zvakanyanya.

4. Kugadzira jekiseni rejekiseni rejekiseni: Kugadzira jekiseni rejekiseni rejekiseni inzira itsva yekuumba nehukuru hwemambure. Muviri wegirini unogadzirwa une chimiro chakafanana uye simba rakawanda. Zvikamu zvedongo zvinowanikwa zvinogona kugadziriswa nemichina yakasiyana-siyana, izvo zvinoderedza mutengo wekugadzirisa mushure mekupiswa. Kugadzira jekiseni rejekiseni rejekiseni rejekiseni kwakakodzera zvikuru kugadzira silicon carbide ceramics ine zvivakwa zvakaoma.

Nekushandisa nzira idzi dzekugadzira, vagadziri vanogona kuwana simbi dzesilicon carbide dzemhando yepamusoro dzine hunhu hwakanaka hwemakanika uye hwebhora. Kugona kugadzira simbi dzesilicon carbide kuita maumbirwo akasiyana-siyana uye maumbirwo kunobvumira kugadziriswa nekugadzirisa kuti zvienderane nezvinodiwa zvemashandisirwo akasiyana.

Pamusoro pezvo, kushanda zvakanaka kwesimbi dzesilicon carbide kunoita kuti dziwedzere kukwezva kwadzo sezvinhu zvinodzivirira mabharaki. Kusanganiswa uku kwezvinhu zvinodiwa uye mutengo unonzwisisika kunoita kuti simbi dzesilicon carbide dzive dzakasimba munzvimbo yekudzivirira muviri.

Mukupedzisa, silicon carbide ceramics ndiyo inotungamira muzvinhu zve ballistic nekuda kwehunhu hwayo hwakanaka uye nzira dzakasiyana-siyana dzekuumba. Maumbirwo ekristaro, simba, kuomarara, kuramba kupfeka, kuramba ngura, kufambisa kupisa uye kuramba kupisa kwe silicon carbide ceramics zvinoita kuti zvive sarudzo inokwezva vagadziri nevaongorori. Nemhando dzakasiyana dzekugadzira, vagadziri vanogona kugadzira silicon carbide ceramics kuti ienderane nekushandiswa kwakatarwa, vachiona kushanda kwakanaka uye dziviriro. Remangwana resilicon carbide ceramics riri kuvimbisa sezvo richiramba richikura uye richishanda zvakanaka mumunda wezvinhu zve ballistic.

Kana tichitaura nezvekudzivirira simbi, kusanganiswa kwemapepa epolyethylene nemidziyo yeceramic kwaratidza kuti kunoshanda zvikuru. Pakati pemhando dzakasiyana dzesimbi dziripo, silicon carbide yakakwezva vanhu vakawanda kumba nekune dzimwe nyika. Mumakore achangopfuura, vaongorori nevagadziri vanga vachiongorora kugona kwesimbi yesilicon carbide sechinhu chinodzivirira simbi zvakanyanya nekuda kwehunhu hwayo hwakanaka uye mutengo wayo wakaderera.

Silicon carbide imusanganiswa unoumbwa nekubatanidza Si-C tetrahedrons, uye ine mafomu maviri ekristaro, α ne β. Pakupisa kunotonhora pasi pe 1600°C, silicon carbide inowanikwa muchimiro che β-SiC, uye kana tembiricha ikapfuura 1600°C, silicon carbide inoshanduka kuita α-SiC. Chisungo che covalent che α-silicon carbide chakasimba kwazvo, uye chinogona kuchengetedza chisungo chakasimba kunyangwe pakupisa kwakanyanya.