Ko te tioata kotahi SiC he rauemi haurua-ā-ira Rōpū IV-IV e titoa ana i ngā huānga e rua, arā, ko Si me C, i roto i te ōwehenga stoichiometric o te 1:1. Ko tōna pakeke te tuarua o te taimana anake.
Ko te tikanga whakaiti waro o te waikura silicon hei whakarite i te SiC e ahu mai ana i te tauira tauhohenga matū e whai ake nei:
He tino uaua te tukanga tauhohenga o te whakaiti waro o te waikura silicon, e pā tika ana te pāmahana tauhohenga ki te hua whakamutunga.
I roto i te tukanga whakarite o te karawiti silicon, ka whakatakotoria tuatahitia ngā rauemi mata ki roto i te oumu ātete. Kei roto i te oumu ātete ngā pakitara pito i ngā pito e rua, me te hiko karawiti i waenganui, ā, ko te matua oumu e hono ana i ngā hiko e rua. I te taha o te matua oumu, ka whakatakotoria tuatahitia ngā rauemi mata e whai wāhi ana ki te tauhohenga, kātahi ka whakatakotoria ngā rauemi e whakamahia ana mō te tiaki wera ki te taha. Ina tīmata te whakarewa, ka whakakahangia te oumu ātete, ā, ka piki te pāmahana ki te 2,600 ki te 2,700 nekehanga Celsius. Ka whakawhitia te pūngao wera hiko ki te utu mā te mata o te matua oumu, ka whakamahana haere. Ina neke ake te pāmahana o te utu i te 1450 nekehanga Celsius, ka puta he tauhohenga matū hei whakaputa i te karawiti silicon me te hau hauota waro. I te haere tonu o te tukanga whakarewa, ka whānui haere te horahanga pāmahana teitei i roto i te utu, ā, ka piki ake hoki te nui o te karawiti silicon e hangaia ana. Ka hangaia tonutia te karawiti silicon i roto i te oumu, ā, mā te mimiti me te nekehanga, ka tipu haere ngā tioata, ā, ka huihui hei tioata porotaka.
Ka tīmata te pirau o tētahi wāhanga o te pakitara o roto o te karaihe nā te pāmahana teitei e neke atu ana i te 2,600 nekehanga Celsius. Ka honoa anō te huānga silicon i puta mai i te pirau ki te huānga waro i roto i te utu hei hanga i te silicon carbide hou.
Kia oti te tauhohenga matū o te silicon carbide (SiC) ā, kia mātao te oumu, ka taea te tīmata i te mahi e whai ake nei. Tuatahi, ka wetewetehia ngā pakitara o te oumu, kātahi ka tīpakohia ngā rauemi mata i roto i te oumu, ka whakarōpūhia papatahi i te papatahi. Ka kuruhia ngā rauemi mata kua tīpakohia kia whiwhi ai i te rauemi kirikiri e hiahiatia ana e tātou. Muri iho, ka tangohia ngā paru i roto i ngā rauemi mata mā te horoi wai, mā te horoi rānei ki ngā otinga waikawa me te kawakore, me te wehenga aukume me ētahi atu tikanga. Me whakamaroke ngā rauemi mata kua horoia, kātahi ka tirotirohia anō, ā, hei whakamutunga, ka taea te tiki i te paura silicon carbide parakore. Mena e tika ana, ka taea te tukatuka anō i ēnei paura kia rite ki te whakamahinga tuturu, pērā i te hanga, te huri rānei, hei whakaputa i te paura silicon carbide pai ake.
Ko ngā mahi motuhake e whai ake nei:
(1) Ngā rauemi mata
Mā te kuru i te kapirati karaka matomato matotoru ake ka puta te paura moroiti karāhe silicon. Me neke atu i te 99% te hanganga matū o te kapirati silicon, ā, me iti iho i te 0.2% te waro kore utu me te waikura rino.
(2) Pakaru
Hei kuru i te onepu silicon carbide hei paura angiangi, e rua ngā tikanga e whakamahia ana i Haina i tēnei wā, ko tētahi ko te kuru i te mira pōro mākū wā poto, ko tētahi ko te kuru mā te whakamahi i te mira paura hau.
(3) Wehenga aukume
Ahakoa te tikanga e whakamahia ana hei kuru i te paura silicon carbide hei paura angiangi, ko te wehenga aukume maku me te wehenga aukume ā-ringa te tikanga e whakamahia ana. Nā te mea kāore he puehu i te wā e wehea ana te aukume maku, ka tino wehea ngā rauemi aukume, he iti ake te rino kei roto i te hua i muri i te wehenga aukume, ā, he iti ake hoki te paura silicon carbide e tangohia ana e ngā rauemi aukume.
(4)Te wehenga wai
Ko te kaupapa matua o te tikanga wehewehe wai ko te whakamahi i ngā tere taunga rerekē o ngā matūriki silicon carbide o ngā diameter rerekē i roto i te wai hei mahi i te whakarōpūtanga rahi matūriki.
(5) Te tirotiro ā-orooro
I te whanaketanga o te hangarau ultrasonic, kua whakamahia whānuitia hoki i roto i te tirotiro ultrasonic o te hangarau paura moroiti, ka taea te whakaoti rapanga tirotiro pēnei i te kaha o te mimiti, te ngawari o te whakakotahitanga, te hiko pateko teitei, te matotoru teitei, te kiato teitei, me te taumaha motuhake māmā.
(6) Tirotiro kounga
Kei roto i te tirotiro kounga o te paura iti te hanganga matū, te hanganga rahi matūriki me ētahi atu mea. Mō ngā tikanga tirotiro me ngā paerewa kounga, tirohia te "Ngā Tikanga Hangarau Silicon Carbide."
(7) Te whakaputa puehu huri
I muri i te whakarōpūtanga me te tātaritanga o te paura moroiti, ka taea te whakamahi i te pane rauemi hei hanga paura huri. Mā te hanga paura huri ka taea te whakaiti i te para me te whakawhānui i te mekameka hua.
Wā tuku: Mei-13-2024