Pehea ke ʻano o ka microstructure (ʻano kristal) o ka graphitized petroleum coke?

I. Nā ʻano o ke ʻano o ka kristal

ʻAno Papa: ʻO ke ʻano kristal o ka coke petroleum graphitized he mau pūnaewele planar o nā ʻātoma kalapona hexagonal. Hoʻopili ʻia kēia mau pūnaewele planar papa ma ka papa, e hana ana i kahi ʻano papa maʻamau. Hoʻopili ʻia nā papa e nā mana van der Waals nāwaliwali, ka mea e hāʻawi ai i ka graphite me ka lubricity a me ka anisotropy.
Nā Kūlana Lattice: Ma hope o ka mālama ʻana i ka graphitization, ua hoʻokokoke nā kūpaʻa lattice (a₀ a me c₀) o ka petroleum coke i nā graphite kūlohelohe, e hōʻike ana i kahi kiʻekiʻe o ke ʻano like i ko lākou mau ʻano kristal. ʻO kēia hiʻohiʻona hoʻonohonoho e hiki ai i ka graphitized petroleum coke ke hōʻike i ka conductivity uila a me ka thermal maikaʻi loa.
Nā Palena Microcrystalline: Ma ka hoʻohana ʻana i ka diffraction X-ray, hiki ke helu ʻia nā palena e like me ka interlayer spacing (d₀₀₂), ke anawaena papa awelika (Lₐ), a me ke kiʻekiʻe stacking (Lc) o nā microcrystals i loko o ka graphitized petroleum coke. Hōʻike kēia mau palena i ka nui a me ka hoʻonohonoho ʻana o nā microcrystals a lawelawe ma ke ʻano he mau hōʻailona koʻikoʻi no ka loiloi ʻana i ke kekelē o ka graphitization.

II. Nā hopena o ke kaʻina hana Graphitization

Hoʻololi mai ke ʻAno ʻAmorphous a i ke Kūlana Crystalline: Ma mua o ka graphitization, he amorphous ke ʻano kalapona o ka petroleum coke, i hōʻailona ʻia e kahi ʻano mea "long-range disordered, short-range ordered". Ma o ka mālama ʻana i ka graphitization (hana pinepine ʻia ma nā mahana kiʻekiʻe mai 2500°C a i 3000°C), hoʻololi mālie ke kalapona amorphous i loko o kahi ʻano kristal graphite ʻekolu-dimensional i kauoha ʻia.
Ka Hoʻonui ʻana o ka Nui o ka Microcrystallite: I ka wā o ka graphitization, piʻi ka mānoanoa awelika (Lc) a me ka laulā (Lₐ) o nā ʻāpana kalapona lattice, ʻoiai e emi ana ka mamao o ka interlayer (d). ʻO ka hopena kēia i ka hoʻonui ʻana o ka nui o ka microcrystallite a me kahi ʻano kristal ʻoi aku ka maikaʻi.
Ka Hoʻēmi ʻana i ke Kūʻē ʻana: Ke piʻi nei ke kekelē o ka graphitization, e emi nui ana ke kūʻē ʻana o ka graphitized petroleum coke. ʻO kēia no ka mea, i ka wā o ka graphitization, e ʻoi aku ka hoʻonohonoho ʻana o nā ʻātoma kalapona, e ʻae ana i nā electrons e neʻe manuahi i loko o nā papa papa, a laila e hoʻonui ai i ka conductivity uila.

III. Pilina ma waena o ka Microstructure a me nā Waiwai

ʻO ke alakaʻi uila: ʻO ke ʻano kristal papa o ka coke petroleum graphitized e hiki ai i nā electrons ke neʻe manuahi i loko o nā papa papa, e hopena ana i ka conductivity uila maikaʻi loa. ʻO kēia waiwai e hoʻohana nui ai i ka coke petroleum graphitized ma nā wahi e like me nā mea electrode a me nā mea hoʻohui conductive.
Ka Hoʻokele Wela: Ma muli o nā mana van der Waals e hoʻopili ana i nā papa, hiki ke hoʻoili koke ʻia ka wela i loko o nā papa papa. No laila, hōʻike pū ka graphitized petroleum coke i ka hoʻokele wela maikaʻi, e kūpono ana no ka hana ʻana i nā mea hoʻoheheʻe wela a me nā noi ʻē aʻe.
Nā Waiwai Mekanika: Hāʻawi ke ʻano kristal o ka coke petroleum graphitized iā ia me kekahi ikaika mechanical. Eia nō naʻe, i ka hoʻohālikelike ʻia me nā mea metala, ʻo kona ʻano papa e hopena i ka palupalu o ka pilina interlayer, e alakaʻi ana i nā ikaika flexural a me compressive haʻahaʻa. Hāʻawi kēia ʻano hana i ka graphitized petroleum coke i kahi pono noi i nā hiʻohiʻona kahi e pono ai ke kū i kekahi mau kaomi akā ʻaʻole pono ka ikaika kiʻekiʻe.