He aha ka mea maikaʻi loa no ka Crucible?

Ma ke aupuni o ka metallurgy, kemika, a me ka ʻepekema waiwai, ke koho ʻana i ka ponokīʻahamea koʻikoʻi i ka hoʻoholo ʻana i ka kūleʻa o nā kaʻina hana like ʻole, mai ka hoʻohuihui metala kiʻekiʻe a hiki i ka synthesis o nā ceramics a me nā aniani. Aia kekahi mau mea crucible i loaʻa, ʻo kēlā me kēia me kāna pūʻulu kūʻokoʻa o nā waiwai a me nā pono. E ʻimi i nā mea maikaʻi loa no nā crucibles i nā kikoʻī nui loa:

 

ʻO nā kīʻaha Quartz

 ʻO nā kīʻaha quartz, i hana pinepine ʻia mai ka silica fused hoʻomaʻemaʻe kiʻekiʻe, ua kaulana no ko lākou mau ʻano ʻokoʻa. ʻOi maikaʻi lākou i ka pale ʻana i nā wela kiʻekiʻe, me ka pale ʻana i nā hopena corrosive o nā waikawa a me nā kumu, a mālama i ka paʻa ma lalo o nā kūlana wela. Loaʻa i kēia mau crucibles ko lākou niche i ka hoʻoheheʻe ʻana i nā metala maʻemaʻe kiʻekiʻe e like me ke silikoni, aluminika, a me ka hao. Eia kekahi, ʻoi aku ka maikaʻi o kā lākou conductivity thermal maikaʻi i ka hoʻoheheʻe ʻana. Eia naʻe, hiki mai ka maikaʻi o ka quartz i kahi kumu kūʻai kiʻekiʻe.

 

ʻO nā mea ʻala ʻeleʻele

Hoʻopili nā kīʻaha ceramic i ʻelua mau ʻāpana nui: alumini oxide ceramics a me zirconium oxide ceramics. Hāʻawi kēia mau crucibles i ke kūpaʻa wela maikaʻi loa a me ke kūpaʻa kemika, e hoʻolilo iā lākou i mau koho maʻamau no ka hoʻoheheʻe ʻana i nā ʻano mea like ʻole, me nā metala, aniani, seramika, a me nā mea hou aku. Eia nō naʻe, ʻoi aku ka haʻahaʻa o ko lākou pale wela ma mua o ka quartz crucibles, kahi e kūpono ai lākou no nā mea me nā helu heheʻe ma lalo o 1700 ° C.

 

Nā Kuʻi Kipi

ʻO nā kīʻaha graphite nā mea hana o nā kaiapuni wela kiʻekiʻe, e lawelawe pinepine ana ma ke ʻano he mea pono i ka noiʻi metallurgical a me kemika. Loaʻa kēia mau crucibles ma nā ʻano kumu ʻelua: graphite maoli a me graphite synthetic. Hoʻohanohano ʻia nā crucibles graphite kūlohelohe ʻoi aku ka maikaʻi o ka wela a me ka pale ʻana i ka corrosion, kūpono no nā noi wela kiʻekiʻe. Ma ka ʻaoʻao ʻē aʻe, ʻoi aku ka maikaʻi o nā crucibles graphite synthetic akā hiki ke hoʻemi iki i ke kūpaʻa a me ka pale ʻana i ka corrosion.

 

ʻO nā mea hao hao

Hoʻokumu ʻia nā kīʻaha metala mai nā mea e like me ke kila kila, molybdenum, platinum, a me nā mea hou aku. ʻO lākou ke koho i ka wā e pili ana i nā mea me nā helu heheʻe kiʻekiʻe a i ʻole ke kū ʻana me nā kūlana acidic a alkaline. Hōʻike nā crucibles metala i ke kūpaʻa ikaika i ka corrosion a mālama i ka paʻa wela. Eia nō naʻe, pili ko lākou hoʻohana ʻana me ke kumukūʻai kiʻekiʻe ma mua o nā mea crucible ʻē aʻe.

 

Summary

TʻO ke koho ʻana i nā mea hoʻoheheʻe e pono ke alakaʻi ʻia e nā mea kikoʻī e hana ʻia a me nā kūlana hoʻoheheʻe e kū nei. Hāʻawi kēlā me kēia ʻano crucible i kona mau pono kūʻokoʻa a me nā palena, a ʻo ke koho ʻana i ka mea kūpono he mea koʻikoʻi ia no ka loaʻa ʻana o nā hopena maikaʻi a maikaʻi hoʻi ma nā kahua o ka metallurgy, kemika, a me ka ʻepekema waiwai.