Ko te pereki waro silicate no te parepare kore, e tu ana i te horo o te waikawa me te parapara alkali, te whakarewa, me etahi atu waikura matū. Silicon carbide he pūāhua o te kaha teitei, pai ātete anti-hāoratanga, a kahore he huringa i te pāmahana teitei. I roto i nga rauemi mata katoa o nga pereki whakaahuru waikura kore, ko te pereki waro slilica te mea tino ohaoha me te tino whakamahia i etahi waahi. ka taea te whakamahi i roto i nga ahumahi rereke, penei i te ahumahi kohatu, te ahumahi karaihe, te ahumahi whakarewa, te ahumahi tuhi, me te ahumahi marama. I tua atu, ko te pereki waro a Silica mo te hoko he tino pai te mahi ki te aukati i te paheketanga o te taiao tino kino, penei i te wera nui o te wera, te pai o te atete, te kaha o te awangawanga waiariki, te kaha o te kaha ki te waikawa me te waiariki kawa me te iti o te wera whakarea me etahi atu.
Ko nga rauemi mata o te poraka carbide silicate he carbide silicon, mo te 72% -99%. Ko te Silicon carbide e kiia ana ko te moissanite, te onepu corundum, te onepu whakaahuru ranei. he mea hanga e te kirikiri kiripaka, te hinu hinu, te taara waro, me nga paraka rakau, ka mahia e te whakarewanga teitei o te pāmahana i roto i te oumu aukati hiko.
Ka hangaia he pereki carbide silicon mai i te carbide silicon, he rauemi mata kua whakahiatotia i roto i te oumu hiko momo-atete i te pāmahana neke atu i te 2500°C, na roto i te tauhohenga o te silica me te waro. He tekau nga wa o nga pereki waro hiraka te kawe i te waiariki, te pai o te waikura me te atete wiariki, ka taea te hanga ki nga ahua uaua. Ka taea e te pereki silica cabon te tu ki te whakaeke para me te horo mura.
Ka taea te whakarōpūhia nga pereki whakamaarama a Silicon carbide ki roto i nga pereki carbide silicon carbide herea, Si3N4 herea silicon carbide pereki, Sialon herea silicon carbide pereki, β-SiC here silicon carbide pereki, Si2ON2 herea silicon carbide pereki me recrystal silicon carbide pereki.
Pereki Silicon Carbide | |||||
Nga taonga | Waeine | SiO2 herenga Silicon Carbide Pereki | Azoxty-cornpounds herea Silicon Carbide Pereki | Mullite Bonded Silicon Carbide Pereki | |
Al2O3 | % | ~ | ~ | ≥10 | |
SiO2 | % | ≤8 | ~ | ~ | |
Fe2O3 | % | ≤1 | ≤0.6 | ≤1 | |
Sic | % | ≥90 | ≥80 | ≥85 | |
Porosity ahua | % | ≤18 | ≤18 | ≤18 | |
Kiato Nui | g/cm3 | ≥2.56 | ≥2.60 | ≥2.56 | |
Te Kaha Maeke | Mpa | ≥80 | ≥100 | ≥70 | |
Refractoriness i raro i te Uta | ℃ | ≥1600 | ≥1620 | ≥1550 | |
Te Pumautanga Ngaaariki(Wā/850) | ℃ | ≥40 | ≥40 | ≥35 | |
Te Whakawhitinga Ngawha | w/m*k | ≥8 | ~ | ~ | |
Te kaha o te piko o te pāmahana noa | Mpa | ≥25 | ≥30 | ≥25 | |
Te Kaha Te Whakapiko Teitei1250℃*1h | Mpa | ≥20 | ≥25 | ≥20 | |
Paemahana Ratonga Morahi | ℃ | 1400 | 1500 | 1400 |
Ko te pereki silica carbide he nui te kawe waiariki, he pai te whakakakahu, te awangawanga waiariki me te aukati waikura. No reira, he maha nga momo whakamahinga o te pereki waro silica e whai ake nei: