Ukume karawiti siliconte whakataurite i te tukanga whakakoi: te tukanga whakakoi me ōna painga me ōna ngoikoretanga
I roto i te hanga uku silicon carbide, ko te hanga he hononga kotahi noa iho i roto i te tukanga katoa. Ko te sintering te tukanga matua e pā tika ana ki te mahi whakamutunga me te mahinga o ngā uku. He maha ngā momo tikanga sintering uku silicon carbide, he painga me he ngoikoretanga o ia tikanga. I roto i tēnei pou rangitaki, ka tūhuratia e mātou te tukanga sintering o ngā uku silicon carbide me te whakataurite i ngā tikanga rerekē.
1. Te tauhohenga sintering:
He tikanga hanga rongonui te tauhohenga sintering mō ngā uku silicon carbide. He tukanga māmā noa iho tēnei, ā, he iti ake te utu, tata ki te rahi. Ka tutuki te sintering mā te tauhohenga silicidation i te pāmahana iti iho i te 1450~1600°C, me te wā poto ake. Ka taea e tēnei tikanga te whakaputa i ngā wāhanga he nui te rahi me te āhua uaua. Heoi, he ngoikoretanga anō hoki. Ko te tauhohenga siliconizing ka hua ake he 8%~12% silicon kore utu i roto i te silicon carbide, ka whakaiti i ōna āhuatanga miihini pāmahana teitei, te ātete ki te waikura, me te ātete ki te waikura. Ā, ka herea te pāmahana whakamahinga ki raro iho i te 1350°C.
2. Te pēhi wera i te sintering:
Ko te whakamahi i te wera-pehi-sintering tētahi atu tikanga noa mō te mahi-sintering i ngā uku silicon carbide. I roto i tēnei tikanga, ka whakakīia te paura silicon carbide maroke ki roto i tētahi pokepokea ai, ā, ka whakamahanahia i te wā e pēhia ana mai i tētahi ahunga uniaxial. Mā tēnei whakamahana me te pēhanga i te wā kotahi ka whakatairanga i te horapa o ngā matūriki, te rere, me te whakawhiti papatipu, ka hua ake he uku silicon carbide me ngā kirikiri pai, he nui te kiato whanaunga, me ngā āhuatanga miihini pai rawa atu. Heoi, he ngoikoretanga anō hoki ō te mahi-sintering wera-pehi-sintering. He uaua ake te tukanga, ā, me whakamahi rauemi me ngā taputapu pokepokea kounga teitei. He iti te pai o te whakaputa, ā, he nui te utu. Hei tāpiri, he pai anake tēnei tikanga mō ngā hua he āhua ngāwari noa iho.
3. Te whakapūtanga wera isostatic:
Ko te whakamahana wera isostatic (HIP) he tikanga e whakamahi ana i te mahi tahi o te hau pēhanga teitei pāmahana teitei me te hau pēhanga teitei taurite isotropically. Ka whakamahia mō te whakamahana me te whakakīkī i te paura uku silicon carbide, te tinana matomato, te tinana kua whakamahanahia rānei. Ahakoa ka taea e te whakamahana HIP te whakapai ake i te mahi o ngā uku silicon carbide, kāore i te whakamahia whānuitia i roto i te hanga papatipu nā te uaua o te tukanga me te utu nui.
4. Te whakakorikori kore-pēhanga:
He tikanga te whakapūtanga kore-pēhanga, he pai rawa te mahi pāmahana teitei, he māmā te tukanga whakapūtanga, ā, he iti te utu o ngā uku silicon carbide. Ka taea hoki e ia te maha o ngā tikanga hanga, ā, he pai mō ngā āhua uaua me ngā wāhanga matotoru. He tino pai tēnei tikanga mō te hanga ahumahi nui o ngā uku silicon.
Hei whakarāpopototanga, he taahiraa nui te tukanga sintering i roto i te hanga uku SiC. Ko te whiriwhiri i te tikanga sintering e whakawhirinaki ana ki ngā āhuatanga pēnei i ngā āhuatanga e hiahiatia ana o te uku, te uaua o te āhua, te utu whakaputa me te whai huatanga. He painga me he ngoikoretanga o ia tikanga, ā, he mea nui kia āta whakaarohia ēnei āhuatanga hei whakatau i te tukanga sintering tino pai mō tētahi tono motuhake.
Wā tuku: 24 o Ākuhata-2023