umusaraba wo gushonga

Silicon karbide irakomeyenigikoresho cyingenzi cyo gushonga munganda zibyuma. Bitewe nubushyuhe buhebuje bwo kurwanya ubushyuhe hamwe nubushyuhe bwumuriro, ikoreshwa cyane muburyo bwo gushonga ibyuma bitandukanye hamwe nubushakashatsi bwimiti. Ariko, kugirango tumenye neza imikorere mugihe cyo gukoresha, silicon karbide ibamba igomba gushyuha neza.

Gutegura intambwe ya silicon karbide ikomeye
Silicon carbide crucibles isaba ubwitonzi budasanzwe mugihe cyo gushyushya kugirango wirinde ibibazo nko kwaguka k'ubushyuhe, gutandukana hepfo, gusiba cyangwa guturika biterwa n'ubushuhe busigaye. Intambwe zihariye nizi zikurikira:

Guteka kwambere: Guteka mu ziko utongeyeho ibikoresho, kandi ugumane ubushyuhe mumasaha arenga 24. Muri iki gihe, uzenguruke ingirakamaro buri gihe kugirango ushushe ubushyuhe kandi ukureho ubuhehere burundu kurukuta rwingenzi.

Buhoro buhoro ubushyuhe:

Banza ushyire hejuru ya dogere selisiyusi 150 kugeza 200 hanyuma ufate isaha 1.
Noneho, ongera ubushyuhe ku gipimo cya dogere selisiyusi 150 ku isaha kugeza ubushyuhe bwo hejuru bugerweho. Muri iki gikorwa, irinde gusiga urukuta rukomeye ku bushyuhe buri hagati ya dogere selisiyusi 315 na 650 igihe kirekire, kuko ingenzi izahinduka okiside vuba muri ubu bushyuhe, igabanya ubuzima bwayo kandi igabanye ubushyuhe bwayo.

Kuvura ubushyuhe bwo hejuru:

Nyuma yo gushyushya birangiye, keretse niba ingenzi yongeye guhura n’ibidukikije bitose, ntibikeneye kongera gushyuha kandi birashobora gukomeza gukoreshwa.
Nyuma yo gushyushya birangiye, uzamure vuba ubushyuhe kugera kuri dogere selisiyusi 850 ~ 950, gumana ubushyuhe bwigice cyisaha utongeyeho ibikoresho, hanyuma ukonje kugeza mubushyuhe busanzwe bwo gukora hanyuma utangire kongeramo ibikoresho. Ubu buvuzi burashobora kwagura neza umurimo wumurimo wingenzi.

Ubundi buryo bwo gutunganya ibintu
Usibye intambwe zavuzwe haruguru, uburyo bukurikira burashobora no gukoreshwa:

Shyushya kuruhande rwamavuta: Gushyira ingenzi kuruhande rwamavuta birashobora gufasha kuvanaho ubuhehere.
Gutwika amakara cyangwa ibiti: Gutwika amakara cyangwa ibiti mu kamaro birashobora kurushaho gufasha gukuraho ubuhehere.

Guhitamo ingano iboneye
Silicon carbide ibipimo byingenzi biratandukanye bitewe nuwabikoze nibisabwa byihariye. Kubwibyo, mugihe uhitamo, nyamuneka reba ibicuruzwa byihariye cyangwa ubaze uwaguhaye amakuru yukuri. Guhitamo igikwiye ukurikije ibyo ukeneye birashobora kuzamura umusaruro nubuziranenge bwibicuruzwa.

Mugukurikiza uburyo bwiza bwo gushyushya no gutunganya, umusaraba wa karibide ya silicon irashobora kwagura imikorere yabo no kongera igihe cyumurimo, bigatanga garanti yizewe kubikorwa byawe.

Igishushanyo Cyumukoresha Ukoresha
Graphite crucibles nayo ikoreshwa cyane mubushakashatsi bwubushyuhe bwo hejuru no kubyara inganda. Ubushyuhe bwayo bukabije, kurwanya ruswa, hamwe nubushuhe bwiza bwumuriro bituma biba byiza mubushakashatsi bwinshi nibikorwa. Kugirango tumenye neza imikorere myiza nubuzima bwa serivisi ndende ya grafite ikomeye, ibyiciro bikurikira bigomba kwitabwaho mugihe cyo gukoresha:

Icyitegererezo
Icyitegererezo gikomeye: Kwirakwiza neza ibizamini cyangwa ibikoresho fatizo muri grafite ingirakamaro kugirango wirinde ubushyuhe bwaho cyangwa kumeneka.
Ingero zamazi: Koresha igitonyanga cyangwa ikindi gikoresho cya micro-sampling kugirango uta amazi mumazi kugirango wirinde kumeneka cyangwa kwanduza hanze yingenzi.

ibikorwa byo gushyushya
uburyo bwo gushyushya:

Koresha ibikoresho byo gushyushya amashanyarazi, gushyushya imirasire yimirasire cyangwa ubundi buryo bukwiye bwo gushyushya kugirango ushushe grafite ikomeye.
Irinde gushyushya byimazeyo n'umuriro ufunguye. Kuberako grafite-isukuye cyane ifite ubushyuhe bwinshi, ubushyuhe butaziguye hamwe numuriro ufunguye bishobora gutera ingirakamaro guhinduka cyangwa gucika.

Umuvuduko ushushe:

Komeza igipimo gikwiye cyo gushyushya kugirango wirinde kwangiza ibikomeye bitewe nubushyuhe butunguranye.
Hindura umwanya n'imbaraga z'igikoresho cyo gushyushya kugirango umenye neza ko umusaraba ushyushye neza.

Kwirinda
Irinde guhura na flame itaziguye: Mugihe ushyushye, irinde guhura na flame kugirango wirinde gusiga ibimenyetso byumukara munsi yumusaraba cyangwa guteza ibindi byangiritse.
Kugenzura ubushyuhe: Graphite crucible yunvikana nihindagurika ryubushyuhe, bityo ubushyuhe bwo gushyushya bugomba kugenzurwa mugihe cyo gukoresha kugirango wirinde guturika gukabije kubera ubushyuhe bwinshi cyangwa buke cyane.
Isuku y’ibidukikije n’umutekano: Komeza ibidukikije bikikije isuku kandi wirinde kwangirika kuri grafite ikomeye kubera ingaruka cyangwa kugwa hejuru.

Inkunga yumwuga
Ubushyuhe bwa Thermal: Ubushyuhe bwumuriro wa grafite-isukuye cyane ni hafi ya 100-300 W / m · K, ituma ishobora kohereza vuba ubushyuhe mubushyuhe bwinshi kandi bikagabanya ingaruka ziterwa nubushyuhe bwa gradient kuri crucible.
Ubushyuhe bwo gukora: Graphite crucible ifite ubukana buhebuje bwo hejuru, ubushyuhe ntarengwa bwo gukora burashobora kugera kuri 3000 ° C, kandi bukoreshwa neza mukirere cya inert.
Kurwanya Oxidation: Iyo bikoreshejwe mubushyuhe bwo hejuru mukirere, hejuru ya grafite ingirakamaro ikunda okiside. Hagomba gufatwa ingamba zo gukingira nko gukoresha anti-okiside cyangwa gukoresha gazi ya inert.

Gukurikiza byimazeyo uburyo bwavuzwe haruguru hamwe nubwitonzi birashobora kwemeza gukora neza no kuramba kuramba rya grafite nasilicon karbide yabambwe, bityo kuzamura ubwizerwe nubuziranenge bwubushakashatsi nibikorwa.