Ka hoʻomaopopo ʻana i nā ʻokoʻa ma waena o nā Crucibles Clay Graphite a me nā Crucibles Silicon Carbide Graphite

I ka hana ʻana i nā hoʻokolohua kemika kiʻekiʻe a i ʻole nā ​​​​noi ʻenehana, ke koho ʻana i nā mea crucible i mea koʻikoʻi i ka hōʻoia ʻana i ka holomua a me ka palekana o ke kaʻina hana. ʻElua mau ʻano crucibles i hoʻohana mau ʻiapālolo graphite cruciblesagraphite silicon carbide crucibles. He mea koʻikoʻi ka hoʻomaopopo ʻana i kona haku mele ʻana, ka wela refractory, ka inertness kemika, a me ka conductivity thermal i ka hoʻoholo ʻana i ka wā e koho ai i ka crucible kūpono no nā hale hana kūikawā a i ʻole nā ​​​​pono ʻoihana.

mea komo:
ʻO ka pālolo graphite crucible ka mea nui i haku ʻia me ka graphite, ka pālolo a me kahi nui o ka lubricant, a ua ʻike ʻia no kona ʻano kemika. Ma ka ʻaoʻao ʻē aʻe, hana ʻia ka graphite silicon carbide crucible me ka pauka carbide silicon a me kekahi mau ʻona o ka honua laha, a loaʻa iā ia nā ʻano o ke kūpaʻa wela kiʻekiʻe, ke kūpaʻa haʻalulu maikaʻi loa, a me ka inertness kemika kiʻekiʻe.

Ka wela pale ahi:
ʻO ka mahana refractory o ka pālolo graphite crucibles hiki i ka 1200°C, aʻo ka graphite silicon carbide crucibles hiki ke kū i nā mahana ma luna o 1500°C. ʻOi aku ka maikaʻi o ka graphite silicon carbide crucibles no nā noi e koi ana i nā mahana kiʻekiʻe ma nā hoʻokolohua kemika a me nā kaʻina hana ʻoihana.

Kemika inert:
Hōʻike nā ʻano crucibles ʻelua i kahi degere o ka inertness kemika, ke kūpaʻa mau nei i ka nui o ka waika, alkali, a me ka paʻakai paʻakai a kūpaʻa i ka corrosion. Eia nō naʻe, ʻo ka mea pālolo i loko o ka pālolo graphite crucibles e maʻalahi ke komo ʻana i nā mea ʻala a me nā haumia i hoʻohālikelike ʻia me nā graphite silicon carbide crucibles.

ʻO ka wela wela:
He kiʻekiʻe ka hana wela o ka graphite a hiki ke hoʻopau koke i ka wela. Eia nō naʻe, ma muli o ke ʻano haʻahaʻa o ka pālolo graphite crucible, hiki ke ʻike ʻia nā kiko ʻeleʻele ma luna o kona ʻili a pono e hoʻomaʻemaʻe pinepine. ʻO ka ʻokoʻa, ʻo ka graphite silicon carbide crucibles he haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa a ʻaʻole e waiho i nā kohu ma ka ʻili. Eia kekahi, ʻo kā lākou paʻakikī kiʻekiʻe e pale i ka lole a me ka deformation.

E koho i ka ipu hao pono:
Ke koho ʻana i kahi crucible chemical laboratory, pono e noʻonoʻo pono i nā koi kikoʻī. He kūpono nā kuʻi graphite pālolo no nā hoʻokolohua kemika maʻamau, ʻoiai ʻo ka graphite silicon carbide crucibles he kūpono ia no nā hoʻokolohua e koi ana i nā mahana kiʻekiʻe a me nā kūlana koi. He mea nui e hahai pono i nā ʻōlelo aʻoaʻo no ka hoʻohana ʻana e pale aku i ka hemahema o ka hoʻokolohua ma muli o ka hana kūpono ʻole.

I ka hōʻuluʻulu manaʻo, ʻo ka hoʻomaopopo ʻana i ka ʻokoʻa ma waena o nā crucibles graphite graphite a me graphite silicon carbide crucibles he mea koʻikoʻi i ke koho ʻana i ka crucible kūpono loa no kahi keʻena kikoʻī a i ʻole ka noi ʻoihana. Ma ka noʻonoʻo ʻana i nā mea e like me ka refractory temperature, kemika inertness a me ka thermal conductivity, hiki i nā mea noiʻi a me nā ʻoihana ʻoihana ke hoʻoholo i ka ʻike e hōʻoia i ka holomua a me ka palekana o nā hoʻokolohua a me nā kaʻina hana.