Silicon carbide (SiC) ceramicsvanozivikanwa nokuda kwesimba ravo rinoshamisa, kusapisa kupisa, uye kugara kwenguva refu. Izvi zvivakwa zvinoita kuti zvive zvakanaka kuti zvishandiswe munzvimbo dzakaoma, senge injini dzemuchadenga kana michina yemaindasitiri. Asi izvi zvinhu zvemberi zvinogadzirwa sei chaizvo? Ngatiparadze hurongwa nhanho nhanho.
1.Raw Material Kugadzirira
Izvo zvese zvinotanga nepamusoro-kuchena silicon carbide poda. Funga izvi se“hupfu” hwekubikisa “keke” receramic.Kunatsiridza zvimiro zvechinhu chekupedzisira, zvidiki zvezviwedzere—sealuminium oxide kana boron komboni—zvinosanganiswa mukati. Izvi zvinowedzera kuita senamo munguva dzinotevera, zvichibatsira kuti zvidimbu zvibatane zvakanyanya.
2. Kugadzira Ceramic
Hupfu hunozoshandurwa kuita fomu inoumbwa. Nzira mbiri dzakajairika dzinoshandiswa:
Kudzvanya: Iyo poda inotsikirirwa kuita chimwe chimiro uchishandisa high pressure, yakafanana nekugadzirisa sinou kuita snowball.
Injection Molding: Hupfu hunosanganiswa nebhainda renguva pfupi (sewakisi) kugadzira musanganiswa wakafanana nekapfu, unobaiwa muforoma dzezvimiro zvakaoma.
Panguva ino, zvinhu zvacho zvinenge zvichiri zvisina kusimba—sechivezwa chejecha rakaoma—uye chinoda “kubikwa” kuti chive chakasimba.
3. The Sintering Process
Apa ndipo panoitika mashiripiti. Ceramic yakaumbwa inodziiswa muchoto chakakosha pakupisa kwakanyanya (kazhinji pamusoro pe1,800 ° C). Panguva yekuchera, zvinhu zviviri zvakakosha zvinoitika:
Particles Bond: Iyo silicon carbide tsanga inokura padyo, ichibvisa mapundu uye ichigadzira yakasimba chimiro.
Additives Work: Iwo akawedzerwa makomisheni anonyunguduka zvishoma, achigadzira "bhiriji" pakati pezvimedu kuti uwedzere kuoma.
Mhoteredzo iri mukati mechoto inodzorwa nokungwarira—dzimwe nguva inozadzwa namagasi asingadzivisiki—kudzivisa kuita kusingadiwi.
4. Kupedza Kubata
Mushure mekunyungudika, ceramic inogona kurapwa kumwe kukwenenzvera kuita kwayo:
Polishing: Zvekushandisa zvinoda nzvimbo dzakatsetseka (semuenzaniso, zvisimbiso kana mabearings).
Coating: Iyo yakatetepa inodzivirira layer (senge silicon nitride) inogona kuwedzerwa kuwedzera kupfeka kuramba.
Machining: Kucheka chaiko kana kuchera kuti uwane zviyero zvekupedzisira.
Sei Ichi Ichi Chinokosha
Chakavanzika chesimba resilicon carbide chiri pakuti maatomu ayo anobatana sei panguva yekupisa. Iyo yakanyanya-tembiricha maitiro inogadzira network yeakasimba silicon-kabhoni mabhondi, ayo anopesana nekupisa, ngura, uye kushushikana kwemuviri. Zvekuwedzera uye chaiyo tembiricha yekudzora inovimbisa kuti chigadzirwa chekupedzisira hachina kuoma chete asiwo chakaoma zvakakwana kuramba kupaza.
Mufananidzo Mukuru
Kubva pakucheka-kumucheto turbines kusvika kune kusvibiswa kwekudzora masisitimu, silicon carbide ceramics inoita basa rakakosha muhunyanzvi hwazvino. Nepo magadzirirwo ekugadzira akaomarara, ndihwo hungwaru hwesainzi nehuinjiniya hunosandura hupfu hwakapfava kuita chinhu chinokwanisa kumirisana nemamiriro akaomarara.
Sezvo kutsvagisa kuri kufambira mberi, nzira nyowani-senge 3D kudhindwa kweceramics-iri kubuda, ichivimbisa mamwe mashandisiro matsva eichi chinhu chinoshamisa.
Nguva yekutumira: Mar-19-2025