He rauemi whiriwhiri te silicon carbide (SiC) i roto i ngā momo mahi ahumahi nā tōna pakeketanga tino pai, tōna pumau i te wera, me tōna ātete matū. I roto i ōna momo āhua maha, he mea nui ngā ngongo silicon carbide mō tōna pakari me tōna mahi i roto i ngā taiao uaua. Ka rukuhia e tēnei tuhinga te tukanga uaua o te hanga.ngā ngongo karawiti silicon, e arotahi ana ki te hanga ngongo uku silicon carbide kua whakamātauhia ki te tauhohenga.
Te Mārama ki te Silicon Carbide
I mua i te ruku hohonu ki te tukanga hanga, he mea nui kia mārama he aha te silicon carbide. Ko te silicon carbide he matū o te silicon me te waro e mōhiotia ana mō ōna āhuatanga tino pai. He haurua-whakawhiti e ātete ana ki ngā pāmahana teitei, te waikura, me te waikura. Nā ēnei āhuatanga ka pai ai ngā ngongo silicon carbide mō ngā tono i roto i ngā ahumahi pēnei i te rererangi, te motuka, me te tukatuka matū.
Te whakarite rauemi mata
Ko te taahiraa tuatahi i roto i te hanga ngongo silicon carbide ko te whakarite i ngā rauemi mata. Ko te paura silicon kounga teitei me te paura waro he mea nui mō te whakaputa i te silicon carbide tauhohenga-teitei (RBSC). He mea nui te parakore o ēnei paura; ka pā kino tetahi poke ki te kounga o te hua whakamutunga. Hei tāpiri, me āta whakahaere te tohatoha rahi matūriki o ngā paura. Mā te rahi matūriki ōrite ka whakarite kia taurite te tauhohenga o te rauemi i te wā o te tukanga sintering, ka hua ake he hua whakamutunga kia matotoru ake, kia kaha ake.
Ngā Kai me te Whakaranu
Kia oti ngā rauemi mata te whakarite, ko te mahi e whai ake nei ko te puranga me te whakaranu. Kei roto i tēnei tukanga te whakahaere tika i te ōwehenga o te paura silicon ki te paura waro. He mea nui te ōwehenga tika nā te mea ka whakatau i ngā tauhohenga matū ka puta i te wā e whakaranua ana. He mea nui te whakaranu pai i ngā paura kia ōrite ai te tohatoha kia tutuki ai te hanganga o te silicon carbide. He mea nui tēnei mahi; ko te kore ōrite o te ranunga ka hua ake he hapa i roto i te ngongo silicon carbide whakamutunga.
Te hanga i te āhua o te paipa
Kia oti te tukanga puranga me te whakaranu, ko te mahi e whai ake nei ko te hanga i te paipa. Ka taea tēnei mā roto i ngā momo tikanga, tae atu ki te pēhi matao isostatic (CIP) me te extrusion rānei. Ko te CIP he pēhi ōrite ki te paura kua whakaranua i roto i te mata, ka hua ake he āhua kiato, kia pai te hanga. Heoi anō, mā te extrusion ka taea te hanga tonu i te rauemi, he mea tino whai hua mō te hanga paipa roa ake. Ko te whiriwhiri i te tikanga hanga e whakawhirinaki ana ki te rahi me ngā whakaritenga e hiahiatia ana mō te hua whakamutunga.
Te tukanga whakatā
Ko te tukanga whakahinuhinu te wāhi e puta ai te makutu. Ka whakanohoia te ngongo karawiti silicon kua hangaia ki roto i te oumu pāmahana teitei me te tere whakamahana me te wā pupuri e tino whakahaerehia ana. I tēnei wāhanga, ka tauhohe te paura silicon me te paura waro ki te taha matū hei hanga i tētahi hanganga karawiti silicon matotoru. Ko te pāmahana whakahinuhinu kei waenganui i te 1400°C me te 2000°C, i runga i te hanganga motuhake me ngā āhuatanga e hiahiatia ana o te hua whakamutunga. He mea nui tēnei taahiraa nā te mea ka whakatau i te kaha miihini me te pumau wera o te ngongo karawiti silicon.
Hangarau tukatuka-muri
Kia oti te tukanga whakahinuhinu, ka tukatukahia te ngongo silicon carbide i muri i te tukatuka. Kei roto i tēnei wāhanga te miihini me te whakakanapa mata kia tutuki ai ngā whakaritenga mō te āhua me te kounga o te mata. Tērā pea ko te miihini he tapahi, he huri, he keri rānei kia tutuki ai ngā āhua e hiahiatia ana, ko te whakakanapa mata ka whakarei ake i te ataahua me te mahi a te ngongo. He mea nui te tukatuka i muri i te tukatuka kia tutuki ai ngā paerewa ahumahi me ngā whakaritenga a te kiritaki.
Ngā Mahi Whakahaere Kounga
I roto i te tukanga whakaputa, ka whakatinanahia e mātou ngā tikanga whakahaere kounga hei whakarite kia tutuki ngā ngongo karawiti silicon ki ngā paerewa e hiahiatia ana. Kei roto i tēnei ko te whakamātautau i te parakore o ngā rauemi mata, te aroturuki i te ōritetanga o te tukanga whakaranu, me te tirotiro i te wā e whakaranua ana, me muri hoki i te whakaranu. Ka taea te whakamahi i ngā tikanga matatau pēnei i te X-ray diffraction me te scanning electron microscopy hei tātari i te hanganga moroiti o te karawiti silicon kia tutuki ai ngā paerewa mahi e hiahiatia ana.
Te tono o te ngongo karāpire silicon
He whānuitia ngā whakamahinga o ngā ngongo karawiti silicon nā ō rātou āhuatanga pai rawa atu. I roto i te umanga tukatuka matū, ka whakamahia hei kawe i ngā wai waikura, engari i roto i te rāngai rererangi, ka whakamahia hei wāhanga i roto i ngā taiao pāmahana teitei. Hei tāpiri, kei te piki haere te whakamahinga o ngā ngongo karawiti silicon i roto i ngā whakamahinga pūngao, pērā i ngā tauhohenga karihi me ngā tāpine hau, he mea tino nui te kaha ki te tu atu i ngā āhuatanga tino kino.
Hei whakarāpopototanga
He tukanga uaua, he tukanga ātaahua hoki te hanga i ngā ngongo silicon carbide e hiahia ana kia aro nui ki ngā taipitopito i ia wāhanga. Mai i te whakarite i ngā rauemi mata kounga teitei ki te whakahaere tika i te tukanga sintering, he mea nui ia taahiraa ki te kounga me te mahi o te hua whakamutunga. I te mea kei te rapu tonu ngā ahumahi i ngā rauemi ka taea te tu atu i ngā āhuatanga uaua, tera pea ka piki ake te hiahia mō ngā ngongo silicon carbide, ā, he mea nui ake te mārama ki tā rātou tukanga whakaputa. Ahakoa e whakamahia ana mō ngā tono ahumahi, mō ngā whakamahinga hangarau matatau rānei, he whanaketanga nui ngā ngongo silicon carbide i roto i te pūtaiao rauemi, e whakarato ana i te roa me te pono i roto i ngā taiao rerekē.
Wā tuku: Maehe-26-2025