Crucibles bụ ihe dị mkpa nke ngwa kemịkal ma na-eje ozi dị ka arịa maka agbaze na nchacha mmiri igwe, yana maka ikpo ọkụ na imeghachi ngwakọta mmiri siri ike. Ha na-etolite ntọala maka ịhụ mmeghachi omume kemịkalụ dị nro.
Enwere ike kewaa crucibles ụzọ atọ:graphite crucibles, ụrọ crucibles, na ígwè crocibles.
A na-esi na graphite kristal eke eke, na-ejigide ihe dị iche iche anụ ahụ na kemịkal nke graphite eke. Ha nwere ezi thermal conductivity na elu okpomọkụ na-eguzogide. N'oge ojiji okpomọkụ dị elu, ha na-egosiputa ọnụọgụ mgbasawanye ọkụ dị ala, na-eme ka ha na-eguzogide ngwa ngwa kpo oku na oyi. Mkpụrụ osisi graphite nwere nguzogide corrosion siri ike na ngwọta acidic na alkaline ma gosipụta nkwụsi ike kemịkalụ mara mma.
N'ihi njirimara ndị a dị elu, a na-eji graphite crucibles eme ihe n'ọtụtụ ebe na ụlọ ọrụ dị ka metallurgy, nkedo, ígwè ọrụ, na chemical engineering. Ha na-achọta ngwa dị ukwuu n'ịgbaze nchara na-agbaze na mgbaze nke ọla ndị na-adịghị ferrous na alloys ha, na-enye uru teknụzụ na akụ na ụba pụtara ìhè.
Silicon Carbide Crucibles:
Silicon carbide crucibles bụ igbe seramiiki nwere ụdị efere. Mgbe ihe siri ike chọrọ ikpo ọkụ na okpomọkụ dị elu, crucibles dị mkpa n'ihi na ha nwere ike iguzogide okpomọkụ dị elu ma e jiri ya tụnyere iko iko. A naghị eju crucibles ka ọ dị ike mgbe a na-eji ya eme ihe iji gbochie ihe ndị na-ekpo ọkụ ka ọ ghara ịwụfu, na-ekwe ka ikuku banye n'enweghị ihe mgbochi ma mee ka mmeghachi omume oxidation nwere ike. N'ihi obere ntọala ha, a na-edobe crucibles n'elu triangle ụrọ maka kpo oku ozugbo. Enwere ike idobe ha n'ụzọ kwụ ọtọ ma ọ bụ n'akụkụ n'elu ígwè tripod, dabere na ihe nnwale achọrọ. Mgbe ikpochasịchara, e kwesịghị idowe crucibles ozugbo n'elu igwe oyi na-atụ ka ịzenarị oyi ngwa ngwa na ndaji. N'otu aka ahụ, e kwesịghị idowe ha ozugbo n'elu osisi iji gbochie ọkụ ma ọ bụ ọkụ ọkụ. Ụzọ ziri ezi bụ ikwe ka crocibles ajụọ oyi nke ọma na ígwè tripod ma ọ bụ tinye ha na ụgbụ asbestos maka oyi nwayọọ nwayọọ. Ekwesịrị iji mkpịsị mkpọsa mee ihe maka njikwa.
Platinum Crucibles:
Platinum crucibles, nke ejiri platinum ọla mee, na-eje ozi dị ka akụkụ mapụtara maka ndị na-enyocha ihe dị iche iche na-ekpo ọkụ ma na-eji ya eme ihe maka ikpo ọkụ ihe ndị na-abụghị ọla, dị ka mmepụta eriri iko na eserese iko.
Ha ekwesịghị ịbịakwute:
Ngwakọta siri ike dị ka K2O, Na2O, KNO3, NaNO3, KCN, NaCN, Na2O2, Ba (OH) 2, LiOH, wdg.
Aqua regia, ngwọta halogen, ma ọ bụ ihe ngwọta nwere ike ịmepụta halogens.
Ngwakọta nke ọla ndị na-adị mfe reducible na ọla ndị ahụ n'onwe ha.
Carbon nwere silicates, phosphorus, arsenic, sọlfọ, na ogige ha.
Nickel Crucibles:
Ebe mgbaze nke nickel bụ 1455 degrees Celsius, na okpomọkụ nke sample na nickel crucible ekwesịghị gafere 700 degrees Celsius iji gbochie oxidation na elu okpomọkụ.
Nickel crucibles na-eguzogide ọgwụ na ihe ndị dị na alkaline na corrosion, na-eme ka ha dị mma maka ịgbaze ígwè alloys, slag, ụrọ, ihe ndị na-emegharị ihe, na ihe ndị ọzọ. Nickel crucibles dakọtara na fluxes alkaline dị ka NaOH, Na2O2, NaCO3, na ndị nwere KNO3, ma ha ekwesịghị iji KHSO4, NaHSO4, K2S2O7, ma ọ bụ Na2S2O7 na sulfide fluxes na sọlfọ. Nnụnụ nke aluminom, zinc, lead, tin, na mercury na-agbaze nwere ike ime ka nickel crucibles kewaa. E kwesịghị iji nickel crucibles mee ihe na-ere ọkụ, na borax ekwesịghị ịgbaze n'ime ha.
Nickel crucibles na-enwekarị ọnụọgụ chromium, yabụ a ga-akpachara anya mgbe a kwụsịrị nnọkọ.
Oge nzipu: Jun-18-2023