I roto i te ao whānui o te pūtaiao rauemi, kua noho ngā uku silicon carbide hei "tino aroha" o te maha o ngā ao hangarau teitei nā ō rātou āhuatanga pai rawa atu pēnei i te pakeke teitei, te kaha teitei, te pumau pai o te wera, me te pumau matū. Mai i te rererangi ki te hanga semiconductor, mai i ngā waka hiko hou ki ngā mīhini ahumahi, he mahi nui tā ngā uku silicon carbide. I roto i te tukanga whakarite o ngā uku silicon carbide, ko te tikanga sintering te mea matua e whakatau ana i ōna āhuatanga me te whānuitanga o ngā tono. I tēnei rā, ka rukuhia e tātou te tukanga sintering o te silicon carbide me te arotahi ki te tūhura i ngā painga ahurei o te tauhohenga sintered.ngā uku karawiti silicon.
Ngā tikanga sintering noa mō te silicon carbide
He maha ngā tikanga sintering mō te silicon carbide, he rerekē ngā mātāpono me ngā āhuatanga o ia tikanga.
1. Te pēhi wera i te sintering: Ko tēnei tikanga sintering ko te whakatakoto i te paura silicon carbide ki roto i tētahi pokepokea ai, me te whakamahi i tētahi pēhanga i te wā e whakamahana ana, kia oti ai ngā tukanga hanga me te sintering i te wā kotahi. Mā te pēhi wera i te sintering ka taea te whiwhi uku silicon carbide matotoru i ngā pāmahana iti me te wā poto, me te rahi o te kōhatu pai me ngā āhuatanga miihini pai. Heoi, he uaua ngā taputapu sintering pēhi wera, he nui te utu o te pokepokea ai, he tino kaha ngā whakaritenga tukanga whakaputa, ā, ko ngā wāhanga āhua māmā anake ka taea te whakarite, ka iti te pai o te whakaputa, ka whakawhāiti i tōna whakamahinga nui ki tētahi taumata.
2. Te whakatōtō pēhanga hauāwhio: Ko te whakatōtō pēhanga hauāwhio te tukanga whakakīkī i te silicon carbide mā te whakamahana ki te 2000-2150 ℃ i raro i te pēhanga hauāwhio me ngā āhuatanga hauāwhio kore mahi, mā te tāpiri i ngā āwhina whakatōtō e tika ana. E rua ngā tukanga: te whakatōtō āhua totoka me te whakatōtō āhua-wai. Ka taea e te whakatōtō āhua totoka te whakatutuki i te kiato teitei o te silicon carbide, kāore he āhua karāhe i waenga i ngā tioata, me ngā āhuatanga miihini pāmahana teitei pai rawa atu; Ko ngā painga o te whakatōtō āhua wai ko te pāmahana whakatōtō iti iho, te rahi o te witi iti ake, me te kaha piko rauemi me te pakari pakaru. Kāore he here o te whakatōtō pēhanga hauāwhio ki te āhua me te rahi o te hua, he iti ngā utu whakaputa, me ngā āhuatanga rauemi whānui pai rawa atu, engari he teitei te pāmahana whakatōtō me te nui o te whakapaunga pūngao.
3. Te tauhohenga sintering: I te tekau tau atu i 1950, i whakaarohia tuatahitia te silicon carbide sintering e P. Popper. Ko te tukanga he whakaranu i te pūtake waro me te paura silicon carbide, me te whakarite i te tinana matomato mā roto i ngā tikanga pēnei i te werohanga pokepoke, te pēhi maroke, te pēhi matao isostatic rānei. Kātahi ka whakamahanahia te pereki ki runga ake i te 1500 ℃ i raro i te korehau, i te hau kore mahi rānei, ā, i taua wā ka rewa te silicon totoka ki roto i te silicon wai, ka uru ki roto i te pereki kei roto ngā pore mā te mahi capillary. Ka pāngia te silicon wai, te kohu silicon rānei e te tauhohenga matū me te C i roto i te tinana matomato, ā, ka honoa te β – SiC i hangaia i roto i te wāhi me ngā matūriki SiC taketake i roto i te tinana matomato hei hanga i ngā rauemi uku silicon carbide sintering tauhohenga.
Ngā Painga o te Whakapūtanga Tauhohenga o te Uku Hiraka Karāpire
Ki te whakaritea ki ētahi atu tikanga sintering, he maha ngā painga nui o ngā uku silicon carbide sintered tauhohenga:
1. Te iti o te pāmahana whakapūngao me te utu ka taea te whakahaere: Ko te pāmahana whakapūngao tauhohenga he iti iho i te pāmahana whakapūngao o te āhuarangi, ka tino whakaiti i te whakapaunga pūngao me ngā whakaritenga mahi pāmahana teitei mō ngā taputapu whakapūngao. Ko te tikanga o te pāmahana whakapūngao iti ake he iti ake ngā utu tiaki mō ngā taputapu me te whakaiti i te whakapaunga pūngao i te wā o te tukanga whakaputa, ka tino whakaiti i ngā utu whakaputa. Nā tēnei ka nui ngā painga ōhanga o ngā uku karāhe silicon carbide kua whakapūngao tauhohenga i roto i te whakaputanga tauine nui.
2. Tata ki te rahi kupenga te hanga, he pai mō ngā hanganga uaua: I te wā o te tukanga whakapūtanga tauhohenga, kāore te rauemi e tino whakaiti i te rahinga. Nā tēnei āhuatanga he tino pai mō te whakarite i ngā wāhanga hanganga rahi, āhua uaua. Ahakoa he wāhanga mīhini tino tika, he wāhanga taputapu ahumahi nui rānei, ka taea e ngā uku silicon carbide kua whakapūtanga tauhohenga te whakatutuki tika i ngā whakaritenga hoahoa, te whakaiti i ngā mahi tukatuka e whai ake nei, te whakapai ake i te pai o te whakaputa, me te whakaiti hoki i te ngaronga rauemi me te pikinga utu i puta mai i te tukatuka.
3. Teitei o te whakakīkī rauemi: Mā te whakahaere tika i ngā āhuatanga tauhohenga, ka taea e te sintering tauhohenga te whakatutuki i te taumata teitei o te whakakīkī o ngā uku silicon carbide. Mā te hanganga matotoru ka whakawhiwhia te rauemi ki ngā āhuatanga miihini pai rawa atu, pērā i te kaha piko teitei me te kaha pēhi, ka taea ai e ia te pupuri i te hanganga pumau i raro i ngā kaha o waho. I taua wā anō, ka whakarei ake te hanganga matotoru i te ātete kakahu me te ātete waikura o te rauemi, ka taea ai e ia te mahi pumau i roto i ngā taiao mahi uaua me te whakaroa i tōna roanga mahi.
4. Te pumau matū pai: He tino ātete ngā uku karāhe silicon carbide kua whakakorikoria ki ngā waikawa kaha me ngā konganuku rewa. I roto i ngā ahumahi pēnei i te matū me te whakarewa, me pā pinepine ngā taputapu ki ngā momo rauemi waikura. Ka taea e ngā uku karāhe silicon carbide kua whakakorikoria te ātete pai ki te pirau o ēnei rauemi, te whakarite i te mahi noa o ngā taputapu, te whakaiti i ngā utu tiaki me te whakakapinga, me te whakapai ake i te haere tonu me te pumau o te whakaputanga.
He whānui te whakamahinga i roto i ngā mara maha
Nā ēnei painga, kua whānuitia te whakamahinga o ngā uku silicon carbide kua whakakāhia i roto i ngā mara maha. I roto i te mara o ngā taputapu oumu pāmahana-tiketike, ka taea e ia te tu atu i ngā taiao pāmahana-tiketike me te whakarite i te mahi pai o ngā oumu; i roto i ngā whakawhiti wera, nā te pai o te kawe wera me te ātete ki te waikura ka waiho hei whiringa rauemi pai rawa atu; i roto i ngā taputapu tiaki taiao pēnei i ngā pūwero desulfurization, ka taea e ia te ātete ki te horo o ngā mea waikura me te whakarite i te mahi pumau mō te wā roa o ngā taputapu. Hei tāpiri, he mahi nui anō hoki tā ngā uku silicon carbide kua whakakāhia i roto i ngā mara teitei pēnei i te photovoltaics me te rererangi.
He tūranga nui ngā uku karāhe silicon carbide kua whakatōngia i roto i te whānau uku karāhe silicon carbide nā ō rātou painga ahurei. Mā te whanaketanga tonu o te hangarau me te arotau tonu o ngā tukanga, e whakaponohia ana ka whakaatu ngā uku karāhe silicon carbide kua whakatōngia i ō rātou mahi tino pai i roto i ngā mara maha atu, ka tautoko rauemi kaha mō te whanaketanga o ngā momo ahumahi.
Wā tuku: Pipiri-13-2025