kalapona kalapona, i ʻike ʻia ʻo graphite a i ʻole graphite material, kahi mea wela kiʻekiʻe maikaʻi loa me nā hiʻohiʻona hana hoʻonani.Ma nā noi wela kiʻekiʻe, he mea koʻikoʻi ka hoʻomaopopo ʻana i ka helu heheʻe o ka carbon graphite no ka mea e pili pono ana i ka paʻa a me ka hoʻohana ʻana o nā mea i nā kaiapuni wela.
ʻO ka carbon graphite kahi mea i haku ʻia me nā ʻātoma kalapona, me nā ʻano hana aniani like ʻole.ʻO ka hana graphite maʻamau he ʻano papa, kahi i hoʻonohonoho ʻia ai nā ʻātoma kalapona i nā papa hexagonal, a nāwaliwali ka hoʻopaʻa ʻana ma waena o nā papa, no laila hiki i nā papa ke paheʻe maʻalahi.Hāʻawi kēia ʻano hana i ka carbon graphite me ka maikaʻi o ka thermal conductivity a me ka lubricity, e hana maikaʻi ana ia i ka wela kiʻekiʻe a me nā kaiapuni kiʻekiʻe.
Ka helu hehee o ka kalapona graphite
ʻO ka helu heheʻe o ka kalapona kalapona e pili ana i ka mahana e hoʻololi ai ka kalapona graphite mai ka paʻa a i ka wai ma lalo o ke kaomi lewa maʻamau.ʻO ka helu heheʻe o ka graphite e pili ana i nā mea e like me kona ʻano aniani a me ka maʻemaʻe, no laila hiki ke loaʻa kekahi mau loli.Eia naʻe, ʻo ka mea maʻamau, aia ka helu heheʻe o ka graphite i loko o ka pae wela kiʻekiʻe.
ʻO ka helu heheʻe maʻamau o ka graphite ma kahi o 3550 degere Celsius (a i ʻole 6422 degere Fahrenheit).Hoʻolilo kēia i ka graphite i mea pale wela kiʻekiʻe loa i kūpono no nā noi wela kiʻekiʻe, e like me ka hoʻoheheʻe metala, nā kapuahi uila, ka hana semiconductor, a me nā umu ahi.ʻO kona wahi hoʻoheheʻe kiʻekiʻe e hiki ai i ka graphite ke mālama i kona kūpaʻa a me ka hana ʻana i kēia mau kaiapuni wela loa, me ka ʻole o ka hoʻoheheʻe ʻana a i ʻole ka nalowale ʻana o ka ikaika mechanical.
Eia naʻe, pono e hoʻomaopopo he ʻokoʻa ka helu heheʻe o ka graphite mai kona wahi hoʻā.ʻOiai ʻaʻole heheʻe ka graphite i nā wela kiʻekiʻe loa, hiki iā ia ke puhi ma lalo o nā kūlana koʻikoʻi (e like me nā kaiapuni waiwai oxygen).
Hoʻohana wela kiʻekiʻe o ka graphite
He kuleana koʻikoʻi ka helu heheʻe kiʻekiʻe o ka graphite i nā māla he nui, a eia kekahi o nā noi wela kiʻekiʻe:
1. Hoohehee metala
Ma ke kaʻina hana o ka hoʻoheheʻe ʻana metala, hoʻohana mau ʻia ka graphite helu hoʻoheheʻe kiʻekiʻe e like me nā crucibles, electrodes, a me nā laina kapuahi.Hiki iā ia ke pale i nā wela kiʻekiʻe loa a loaʻa iā ia ka conductivity thermal maikaʻi loa, e kōkua ana i ka hoʻoheheʻe ʻana a me ka hoʻolei ʻana i nā metala.
2. Hana semiconductor
Pono ke kaʻina hana semiconductor i nā umu wela wela e hoʻomākaukau ai i nā mea semiconductor e like me ka crystalline silicon.Hoʻohana nui ʻia ka Graphite ma ke ʻano he umu ahi a me ka mea hoʻomehana no ka mea hiki ke hana i nā wela kiʻekiʻe loa a hāʻawi i ka conductivity thermal paʻa.
3. ʻOihana Kemika
Hoʻohana ʻia ʻo Graphite i ka ʻoihana kemika e hana i nā reactors kemika, nā paipu, nā mea hoʻomehana, a me nā mea kākoʻo catalyst.ʻO kona kūpaʻa kiʻekiʻe-mehana a me ka pale ʻana i ka corrosion e lilo ia i koho kūpono no ka lawelawe ʻana i nā mea corrosive.
4. Ke kapuahi hale hana
Hoʻohana maʻamau nā kapuahi Laboratory i ka graphite ma ke ʻano he mea hoʻomehana no nā hoʻokolohua wela kiʻekiʻe a me ka hoʻoili waiwai.Hoʻohana maʻamau ʻia nā crucibles graphite no ka hoʻoheheʻe ʻana o ka laʻana a me ka nānā wela.
5. Aerospace a me Nuclear Industry
Ma ka ʻoihana aerospace a me ka nuklea, hoʻohana ʻia ka graphite e hana i nā mea wela kiʻekiʻe a me nā ʻāpana, e like me nā mea e hoʻopaʻa ʻia ai ke koʻokoʻo wahie i nā reactors nuklea.
Nā ʻano like ʻole a me nā hoʻohana ʻana o ka Graphite
Ma waho aʻe o ka graphite maʻamau, aia nā ʻano like ʻole o ka carbon graphite, e like me ka pyrolytic graphite, modified graphite, metal based graphite composites, a me nā mea ʻē aʻe, he mau hiʻohiʻona hana kūikawā i nā noi wela kiʻekiʻe.
Pyrolytic Graphite: ʻO kēia ʻano graphite he anisotropy kiʻekiʻe a me ka conductivity thermal maikaʻi loa.Hoʻohana nui ʻia ia i nā kula e like me ka aerospace a me ka ʻoihana semiconductor.
Ka graphite i hoʻololi ʻia: Ma ka hoʻokomo ʻana i nā haumia a i ʻole ka hoʻololi ʻana o ka ʻili i loko o ka graphite, hiki ke hoʻomaikaʻi ʻia nā waiwai kikoʻī, e like me ka hoʻonui ʻana i ka pale ʻana a i ʻole ka hoʻomaikaʻi ʻana i ka conductivity thermal.
ʻO nā mea hana graphite composite metala: Hoʻohui kēia mau mea hoʻohui i ka graphite me nā mea metala metala, loaʻa nā waiwai wela kiʻekiʻe o ka graphite a me nā waiwai mechanical o ka metala, a kūpono i nā hale kiʻekiʻe a me nā ʻāpana.
Choʻokomo
ʻO ka helu hoʻoheheʻe kiʻekiʻe o ka carbon graphite e lilo ia i mea waiwai nui i nā noi wela kiʻekiʻe.Inā i loko o ka hoʻoheheʻe metala, ka hana semiconductor, ka ʻoihana kemika, a i ʻole nā kapuahi hale hana, he hana koʻikoʻi ka graphite i ka hōʻoia ʻana e hiki ke hoʻokō paʻa ʻia kēia mau kaʻina hana i nā wela wela.Ma ka manawa like, ua kūpono nā ʻano like ʻole a me nā hoʻololi ʻana o ka graphite no nā noi kikoʻī like ʻole, e hāʻawi ana i nā hopena like ʻole no nā kaiāulu a me nā ʻepekema.Me ka hoʻomau mau ʻana o ka ʻenehana, hiki iā mākou ke manaʻo e ʻike i ka puka ʻana mai o nā mea wela kiʻekiʻe hou e hoʻokō i nā pono hoʻololi mau o nā kaʻina hana wela.
Ka manawa hoʻouna: Oct-23-2023