Vim li cas rau graphite pas nrig electrolysis

Vim li cas rau graphite pas nrig electrolysis

Cov xwm txheej rau kev tsim cov electrolytic cell: DC fais fab mov. (1) DC fais fab mov. (2) Ob lub electrodes. Ob lub electrodes txuas nrog lub positive pole ntawm lub fais fab mov. Ntawm lawv, lub positive electrode txuas nrog lub positive pole ntawm lub fais fab mov hu ua anode, thiab lub electrode txuas nrog lub negative pole ntawm lub fais fab mov hu ua cathode. (3) Electrolyte solution lossis molten electrolyte.Cov electrolytekev daws teeb meem los yog kev daws teeb meem 4, ob lub electrodes thiab electrode reaction, anode (txuas nrog rau lub positive pole ntawm lub hwj chim muab hluav taws xob): oxidation reaction anode (txuas nrog rau lub positive pole ntawm lub hwj chim muab hluav taws xob): oxidation reaction cathode (txuas nrog rau lub negative pole ntawm lub hwj chim muab hluav taws xob): reduction reaction cathode (txuas nrog rau lub negative pole ntawm lub hwj chim muab hluav taws xob): reduction reaction (negative electrode txuas nrog): reduction group 1: electrolysis group 1: electrolysis ntawm CuCl2 anode cathode chlorine.
     Cov xim avyog ib qho siv lead ua los ntawm cov pa roj carbon. Nws yog ib yam khoom siv uas tsis yog hlau nrog xim grey nyiaj, mos thiab ci ntsa iab. Mohs hardness yog 1-2, qhov hnyav tshwj xeeb yog 2.2-2.3, thiab nws qhov ceev feem ntau yog 1.5-1.8.
Lub melting point ntawm graphite pib mos thaum nws mus txog 3000 ℃ hauv lub tshuab nqus tsev thiab feem ntau yaj. Thaum nws mus txog 3600 ℃, graphite pib ua pa thiab sublimate. Lub zog ntawm cov khoom siv dav dav maj mam txo qis ntawm qhov kub siab, thaum lub zog ntawm graphite yog ob npaug ntawm qhov kub chav thaum nws raug cua sov rau 2000 ℃. Txawm li cas los xij, qhov tsis kam oxidation ntawm graphite tsis zoo, thiab qhov nrawm oxidation maj mam nce nrog qhov nce ntawm qhov kub.
Lubkev ua kom sov tau zoothiab kev ua tau zoo ntawm graphite siab heev. Nws cov kev ua tau zoo yog 4 npaug ntau dua li cov hlau tsis xeb, 2 npaug ntau dua li cov hlau carbon thiab 100 npaug ntau dua li cov hlau tsis yog hlau. Nws cov kev ua tau zoo ntawm thermal tsis yog tsuas yog ntau dua li cov khoom siv hlau xws li hlau, hlau thiab txhuas xwb, tab sis kuj txo qis nrog rau qhov kub thiab txias, uas txawv ntawm cov khoom siv hlau dav dav. Graphite txawm tias feem ntau yog adiabatic ntawm ntau qhov kub thiab txias. Yog li ntawd, kev ua tau zoo ntawm thermal rwb thaiv tsev ntawm graphite yog qhov txhim khu kev qha heev ntawm qhov kub thiab txias siab.
Graphite muaj lubricity zoo thiab plasticity. Lub coefficient ntawm graphite tsawg dua 0.1. Graphite tuaj yeem tsim ua cov ntawv ua pa thiab pob tshab. Lub hardness ntawm graphite muaj zog heev uas nws nyuaj rau ua nrog cov cuab yeej pob zeb diamond.
Graphite muaj kev ruaj khov tshuaj lom neeg, kua qaub thiabtsis kam alkalithiab cov organic solvent corrosion tsis kam. Vim tias graphite muaj cov khoom zoo heev saum toj no, nws tau siv dav dua hauv kev lag luam niaj hnub no.