Ukuqonda umahluko phakathi kweeCrucible zeGraphite zodongwe kunye neGraphite Silicon Carbide Crucibles

Xa uqhuba iimvavanyo zeekhemikhali eziphezulu zokushisa okanye ukusetyenziswa kwamashishini, ukukhethwa kwezinto ezinqamlekileyo kudlala indima ebalulekileyo ekuqinisekiseni impumelelo kunye nokhuseleko lwenkqubo. Iindidi ezimbini ezisetyenziswa ngokuxhaphakileyo zecrucibles ziiicrucibles zegraphite zodongwekwayeiicrucibles ze-graphite silicon carbide. Ukuqonda ukubunjwa kwayo kwezinto eziphathekayo, ukushisa kwe-refractory, i-inertness yekhemikhali, kunye ne-thermal conductivity kubalulekile ukwenza isigqibo esinolwazi xa ukhetha i-crucible efanelekileyo kwi-laboratory ethile okanye iimfuno zoshishino.

isithako semathiriyeli:
I-clay graphite crucible iqulunqwe kakhulu yigraphite, udongwe kunye nomlinganiselo othile we-lubricant, kwaye iyaziwa ngokuba yi-inertness yayo yeekhemikhali. Kwelinye icala, i-graphite silicon carbide crucible yenziwe nge-silicon carbide powder kunye nezinye ii-oxides zomhlaba ezinqabileyo, kwaye ineempawu zokuxhathisa ubushushu obuphezulu, ukuxhathisa ukothuka kwe-thermal, kunye nokungangeni kweekhemikhali eziphezulu.

Ubushushu bokumelana nomlilo:
Ubushushu obuchasayo bezinto zodongwe zegraphite crucibles ngokubanzi bufikelela malunga ne-1200°C, ngelixa iicrucibles ze-graphite silicon carbide zinokumelana namaqondo obushushu angaphezu kwe-1500°C. Oku kwenza i-graphite silicon carbide crucibles ifaneleke ngakumbi kwizicelo ezifuna amaqondo obushushu aphezulu kwiimvavanyo zemichiza kunye neenkqubo zoshishino.

Inert ngokwekhemikhali:
Zombini iintlobo ze-crucibles zibonisa i-degree of inertness yekhemikhali, ehlala izinzile kwininzi ye-asidi, i-alkali, kunye nezisombululo zetyuwa kunye nokumelana nokubola. Nangona kunjalo, icandelo lodongwe kwi-crucibles ye-graphite yodongwe yenza kube lula ukufunxa izinto zokulandelela kunye nokungcola xa kuthelekiswa ne-graphite silicon carbide crucibles.

I-Thermal Conductivity:
I-graphite ine-conductivity ephezulu ye-thermal kwaye inokususa ubushushu ngokukhawuleza. Nangona kunjalo, ngenxa yesakhiwo esivulekileyo se-crucible ye-graphite yodongwe, amabala amnyama athambekele ekuveleni phezu kwawo kwaye afuna ukucocwa rhoqo. Ngokwahlukileyo, i-graphite silicon carbide crucibles ine-conductivity ephantsi ye-thermal kwaye ayiyi kushiya amabala phezu komhlaba. Ukongezelela, ubunzima babo obuphezulu buthintela ukunxiba kunye nokuguqulwa.

Khetha i-crucible efanelekileyo:
Xa ukhetha i-crucible yelabhoratri yeekhemikhali, iimfuno ezithile kufuneka ziqwalaselwe. Iikhreyibhile zegraphite zodongwe zifanelekile kwiimvavanyo zekhemistri ngokubanzi, ngelixa i-graphite silicon carbide crucibles ifanelekile kwiimvavanyo ezifuna ubushushu obuphezulu kunye neemeko ezinzima kakhulu. Kubalulekile ukulandela ngokungqongqo imiyalelo yokusetyenziswa ukuphepha ukusilela kovavanyo ngenxa yokusebenza ngokungafanelekanga.

Isishwankathelo, ukuqonda umahluko phakathi kwee-crucibles zodongwe ze-graphite kunye ne-graphite silicon carbide crucibles kubalulekile ekukhetheni i-crucible efanelekileyo kakhulu kwi-laboratory ethile okanye kwi-industrial application. Ngokuqwalasela izinto ezifana nobushushu obuchasayo, ukunganyaniseki kweekhemikhali kunye ne-thermal conductivity, abaphandi kunye neengcali zoshishino banokwenza izigqibo ezinolwazi ukuqinisekisa impumelelo kunye nokhuseleko lwezilingo kunye neenkqubo.