Ngā Tikanga Hanga mō ngā Ukume Silicon Carbide

Ngā Tikanga Hanga mō ngā Ukume Silicon Carbide: He Tirohanga Whānui

Ko te hanganga tioata ahurei me ngā āhuatanga o ngā uku silicon carbide e whai wāhi ana ki ōna āhuatanga tino pai. He kaha tino pai, he tino pakeke, he ātete ki te kakahu, he ātete ki te waikura, he kawe wera teitei, ā, he ātete pai ki ngā ru wera. Nā ēnei āhuatanga ka pai ai ngā uku silicon carbide mō ngā tono pahū.

Ko te hanganga o ngā uku silicon carbide e whai ake nei:

1. Te whakahāngai pēhi: He tikanga whānui te whakahāngai pēhi mō te hanga pepa ātete-matā silicon carbide. He māmā te tukanga, he ngāwari ki te whakahaere, he tino whai hua, ā, he pai mō te hanga tonu.

2. Hanganga werohanga: He tino ngāwari te hanga i te hanga werohanga, ā, ka taea te hanga i ngā āhua me ngā hanganga uaua. He tino painga tēnei tikanga ina hangaia ngā wāhanga uku silicon carbide āhua motuhake.

3. Te pēhitanga matao isostatic: Ko te pēhitanga matao isostatic e pā ana ki te whakamahinga o te kaha ōrite ki te tinana matomato, ka hua ake he tohatoha kiato ōrite. Ka tino whakapai ake tēnei hangarau i te mahi a te hua, ā, he pai hoki mō te hanga uku silicon carbide mahi teitei.

4. Te whakahāngai werohanga ira: He tikanga whakahāngai hou te whakahāngai werohanga ira, tata ki te rahi kupenga. He hanganga ōrite te tinana matomato e hangaia ana, ā, he kaha teitei. Ka taea te tukatuka i ngā wāhanga uku e puta mai ana mā ngā mīhini maha, ka whakaiti i te utu tukatuka i muri i te whakahāngai. He tino pai te whakahāngai werohanga ira mō te hanga uku karawiti silicon me ngā hanganga uaua.

Mā te whakamahi i ēnei tikanga hanga, ka taea e ngā kaihanga te whiwhi uku silicon carbide kounga teitei me ngā āhuatanga miihini me te ātete pai rawa atu. Mā te kaha ki te hanga uku silicon carbide ki ngā momo āhua me ngā hanganga ka taea te whakarite me te arotau kia tutuki ai ngā whakaritenga motuhake o ngā tono rerekē.

Hei tāpiritanga, ko te utu whai hua o ngā uku silicon carbide ka whakanui ake i tōna ataahua hei rauemi ātete-porotī teitei. Mā tēnei huinga o ngā āhuatanga e hiahiatia ana me te utu whaitake ka waiho ngā uku silicon carbide hei whakataetae kaha i roto i te ao pukupuku tinana.

Hei whakamutunga, ko ngā uku silicon carbide ngā rauemi porotiti matua nā ō rātou āhuatanga tino pai me ngā tikanga whakahāngai maha. Ko te hanganga tioata, te kaha, te pakeke, te ātete ki te kakahu, te ātete ki te waikura, te kawe wera me te ātete ki te ru wera o ngā uku silicon carbide he mea ātaahua ki ngā kaihanga me ngā kairangahau. Mā te maha o ngā tikanga whakahāngai, ka taea e ngā kaihanga te whakarite i ngā uku silicon carbide kia tutuki ai ngā tono motuhake, kia pai ai te mahi me te tiaki. He mea whakamīharo te heke mai o ngā uku silicon carbide i a rātou e whanake tonu ana, e mahi pai ana hoki i roto i te mara o ngā rauemi porotiti.

Mō te tiakitanga ā-porowhita, kua kitea te tino whai huatanga o te whakakotahitanga o ngā rau polyethylene me ngā whakaurunga uku. I roto i ngā momo whiringa uku e wātea ana, kua kukume te nui o te aro ki te silicon carbide i te kāinga me tāwāhi. I ngā tau tata nei, kua tūhuratia e ngā kairangahau me ngā kaihanga te kaha o ngā uku silicon carbide hei rauemi ātete-porowhita teitei-mahi nā ōna āhuatanga pai me te utu iti.

He matū te karawiti silicon i hangaia mā te whakarārangi i ngā tetrahedrona Si-C, ā, e rua ngā āhua tioata, ko te α me te β. I te pāmahana sintering i raro i te 1600°C, ka noho te karawiti silicon i te āhua o te β-SiC, ā, ina neke atu te pāmahana i te 1600°C, ka huri te karawiti silicon hei α-SiC. He tino kaha te herenga covalent o te karawiti α-silicon, ā, ka taea e ia te pupuri i te here kaha-teitei ahakoa i ngā pāmahana teitei.