Chii chinonzi microstructure (crystal structure) ye graphitized petroleum coke?

I. Hunhu hweMagadzirirwo eKristaro

Maumbirwo Akarongwa: Maumbirwo ekristaro egrafitised petroleum coke ane ma network akarongwa emaatomu ekabhoni ane hexagonal. Ma network aya akarongwa akarongwa akarongwa, zvichigadzira maumbirwo akarongwa akarongwa. Ma layer aya akabatanidzwa nemasimba asina simba evan der Waals, ayo anopa graphite lubricity uye anisotropy.
MaLattice Constants: Mushure mekugadzirisa graphitization, ma lattice constants (a₀ na c₀) epetroleum coke anosvika kune e natural graphite, zvichiratidza kufanana kwakanyanya mumagadzirirwo awo ekristaro. Hunhu uhwu hwemaumbirwo hunoita kuti graphitized petroleum coke iratidze mafambiro akanaka emagetsi nekupisa.
MaParameter eMicrocrystalline: Uchishandisa X-ray diffraction, maparameter akadai seinterlayer spacing (d₀₀₂), avhareji yelayer dayamita (Lₐ), uye stacking height (Lc) yema microcrystals ari mu graphitized petroleum coke anogona kuverengwa. Maparameter aya anoratidza saizi uye kurongeka kwema microcrystals uye anoshanda sezviratidzo zvakakosha zvekuongorora mwero we graphitization.

II. Mhedzisiro yeMaitiro eGraphitization

Kuchinja kubva paAmorphous kuenda kuCrystalline State: Graphitization isati yaitwa, chimiro chekabhoni chepetroleum coke chakanga chisina chimiro, chinoratidzwa nechimiro chezvinhu "chisina kurongeka kwenguva refu, chakarongwa kwenguva pfupi". Kuburikidza ne graphitization treatment (inowanzoitwa pakupisa kwakanyanya kubva pa2500°C kusvika 3000°C), amorphous carbon inoshanduka zvishoma nezvishoma kuita chimiro che graphite crystal chakarongeka chemativi matatu.
Kuwedzera kwehukuru hweMicrocrystallite: Munguva yegraphitization, avhareji yeukobvu (Lc) nehupamhi (Lₐ) hwema carbon lattice flakes inowedzera, nepo nzvimbo yepakati pezvikamu (d) ichiderera. Izvi zvinoguma nekuwedzera kwehukuru hwe microcrystallite uye chimiro chekristaro chakakwana.
Kuderera kweResistivity: Sezvo mwero wegraphitization uchiwedzera, resistivity yegraphitized petroleum coke inoderera zvakanyanya. Izvi zvinodaro nekuti, panguva yegraphitization, kurongeka kwemaatomu ekabhoni kunowedzera kurongeka, zvichibvumira maerekitironi kufamba zvakasununguka mukati me layer planes, nokudaro zvichiwedzera conductivity yemagetsi.

III. Hukama huripo pakati peZvivakwa Zvidiki neZvinhu

Kufambisa Kwemagetsi: Maumbirwo ekristaro akaumbwa egraphitized petroleum coke anoita kuti maerekitironi afambe zvakasununguka mukati mezvikamu zvezvikamu, zvichikonzera kufambiswa kwemagetsi kwakanaka. Izvi zvinoita kuti graphitized petroleum coke ishandiswe zvakanyanya munzvimbo dzakadai sezvinhu zve electrode uye zvimwe zvinowedzerwa pakufambisa magetsi.
Kufambiswa Kwemafuta Nekupisa: Nekuda kwemasimba evan der Waals anobatanidza machira, kupisa kunogona kufambiswa nekukurumidza mukati memachira. Nekuda kweizvozvo, petroleum coke ine graphitized inoratidzawo kufambiswa kwakanaka kwemafuta nekupisa, zvichiita kuti ive yakakodzera kugadzira zvinhu zvinopisa uye zvimwe zvinoshandiswa.
Hunhu hweMichina: Maumbirwo ekristaro e graphitized petroleum coke anoipa simba remuchina. Zvisinei, kana tichienzanisa nezvinhu zvesimbi, maumbirwo ayo ane layer anoita kuti pave nekubatana kusina kusimba pakati pe layer, zvichiita kuti pave ne flexural uye compressive strengths shoma. Hunhu uhwu hwekushanda hunopa graphitized petroleum coke mukana wekushandisa mumamiriro ezvinhu apo inoda kumira kumanikidzwa asi isingade simba rakawanda.