Injani i-microstructure (isakhiwo sekristale) ye-graphitized petroleum coke?

I. Iimpawu zesakhiwo sekristale

Ulwakhiwo Oluneeleya: Ulwakhiwo lwekristale lwe-graphitized petroleum coke luqulathe iinethiwekhi ezicwangcisiweyo zeeathom zekhabhoni ezineehexagonal. Ezi networks ezicwangcisiweyo zibekwe ngokweeleya, zenza ulwakhiwo oluqhelekileyo oluneeleya. Ezi leya ziqhagamshelwe ngamandla e-van der Waals abuthathaka, anika i-graphite i-lubricity kunye ne-anisotropy.
IiLattice Constants: Emva konyango lwe-graphitization, ii-lattice constants (a₀ kunye ne-c₀) ze-petroleum coke zisondela kwezo ze-graphite yendalo, nto leyo ebonisa ukufana okuphezulu kwizakhiwo zazo zekristale. Olu phawu lolwakhiwo lwenza i-graphitized petroleum coke ibonise ukuqhuba kakuhle kombane kunye nobushushu.
Iiparamitha zeMicrocrystalline: Ukusebenzisa i-X-ray diffraction, iiparameter ezifana ne-interlayer spacing (d₀₀₂), i-average layer diameter (Lₐ), kunye ne-stacking height (Lc) yee-microcrystals kwi-graphitized petroleum coke zinokubalwa. Ezi paramitha zibonisa ubungakanani kunye nolungiselelo lwee-microcrystals kwaye zisebenza njengezalathisi ezibalulekileyo zokuvavanya inqanaba le-graphitization.

II. Iziphumo zeNkqubo yeGraphitization

Utshintsho ukusuka kwi-Amorphous ukuya kwi-Crystalline State: Ngaphambi kokuba i-graphitization iqale, ulwakhiwo lwekhabhoni lwe-petroleum coke alunawo ulwelo, luphawulwa yisakhiwo sezinto "esingenawo ulwelo olude, esicwangciswe ngolu hlobo lufutshane". Ngokusebenzisa unyango lwe-graphitization (olwenziwa rhoqo kumaqondo obushushu aphezulu ukusuka kwi-2500°C ukuya kwi-3000°C), ikhabhoni engawo ulwelo itshintsha kancinci kancinci ibe yisakhiwo sekristale se-graphite esinemilinganiselo emithathu esicwangcisiweyo.
Ukwanda kobukhulu beMicrocrystallite: Ngexesha legraphitization, ubukhulu obuphakathi (Lc) kunye nobubanzi (Lₐ) bee-carbon lattice flakes ziyanda, ngelixa isithuba se-interlayer (d) sincipha. Oku kubangela ukwanda kobukhulu be-microcrystallite kunye nesakhiwo sekristale esigqibeleleyo.
Ukuncipha kokumelana: Njengoko inqanaba lokuguquguquka kwegrafu lisanda, ukumelana kwe-graphitized petroleum coke kuncipha kakhulu. Oku kungenxa yokuba, ngexesha lokuguquguquka kwegrafu, ukulungelelaniswa kweeathom zekhabhoni kuya kulungelelaniswa ngakumbi, okuvumela ii-elektroni ukuba zihambe ngokukhululekileyo ngaphakathi kwemigangatho yomaleko, ngaloo ndlela kuphucula ukuhanjiswa kombane.

III. Ubudlelwane Phakathi kweZinto ezincinci kunye neePropati

Ukuqhuba Umbane: Ulwakhiwo lwekristale oluneeleyara ze-graphitized petroleum coke luvumela ii-elektroni ukuba zihambe ngokukhululekileyo ngaphakathi kweeleyara, nto leyo ebangela ukuqhubela phambili kombane. Olu phawu lwenza i-graphitized petroleum coke isebenziseke kakhulu kwiindawo ezifana nezixhobo ze-electrode kunye nezongezo zokuqhuba.
Ukuqhuba Ubushushu: Ngenxa yamandla e-van der Waals adibanisa iileya, ubushushu bunokudluliselwa ngokukhawuleza ngaphakathi kweeleya. Ngenxa yoko, i-graphitized petroleum coke ikwabonisa ukuqhuba kakuhle kobushushu, nto leyo eyenza ukuba ifaneleke ukuvelisa izixhobo zokusasaza ubushushu kunye nezinye izinto ezisetyenziswayo.
Iipropati zoomatshini: Ulwakhiwo lwekristale lwe-graphitized petroleum coke luyinika amandla athile oomatshini. Nangona kunjalo, xa kuthelekiswa nezinto zesinyithi, ulwakhiwo lwayo oluneeleyara lubangela ukuba i-interlayer bonding ibe buthathaka, nto leyo ekhokelela ekubeni i-flexural kunye ne-compressive strengths zibe namandla aphantsi. Olu phawu lokusebenza lunika i-graphitized petroleum coke ithuba lokusetyenziswa kwiimeko apho kufuneka imelane noxinzelelo oluthile kodwa ayifuni amandla aphezulu.