Cov nyhuv thiab cov khoom siv zoo ntawm cov khoom graphite

Vim nws muaj ntau yam zoo heev, graphite pom tau tias siv tau dav hauv kev lag luam hlau, tshuab, hluav taws xob, tshuaj lom neeg, ntaub, thiab lwm yam kev lag luam. Nws ua haujlwm ua cov khoom siv refractory thiab khaws cov yam ntxwv tshuaj lom neeg qub ntawm flake graphite thaum ua kom pom cov yam ntxwv lubricating zoo. Hmoov graphite muaj lub zog siab tiv taus acid, tiv taus corrosion, ua haujlwm kub siab txog 3000 ℃ thiab ua haujlwm kub qis txog -204 ℃. Tsis tas li ntawd, nws muaj lub zog compressive tshaj 800kg / Cm2 thiab ua haujlwm oxidation nrog tsuas yog 1% poob phaus thaum raug cua ntawm 450 ℃. Tsis tas li ntawd, nws muaj tus nqi rov qab ntawm 15-50% (qhov ceev 1.1-1.5). Yog li ntawd, cov khoom graphite siv dav hauv metallurgy, kev lag luam tshuaj lom neeg, kev lag luam petrochemical, lub zog siab physics, aerospace, electronics thiab ntau lwm yam teb.

Cov khoom siv graphite lawv tus kheej muaj cov txiaj ntsig zoo heev:

1, cov khoom graphite muaj kev nqus dej zoo.

Cov qauv khoob ntawm cov pa roj carbon ua rau cov pa roj carbon muaj cov adsorption zoo, yog li cov pa roj carbon feem ntau siv ua cov khoom siv adsorption rau kev nqus dej, tsw, cov tshuaj lom thiab lwm yam. Peb tau ua kev sim, ob peb hnub dhau los barbecue siv graphite ci tais zoo li huv heev, tab sis muab tso rau ntawm qhov cub induction cua sov, koj yuav pom qhov kawg barbecue adsorption ntawm cov roj thiab cov tshuaj lom yuav maj mam tawm, tab sis tsis txhob txhawj, nrog daim ntawv noj mov huv si los so kom huv si tuaj yeem siv.

2, cov khoom graphite muaj cov thermal conductivity zoo, hloov pauv cua sov sai, cua sov sib xws, txuag roj.

Cov ntawv ci thiab cov lauj kaub ua los ntawm graphite raug cua sov sai, thiab cov khoom noj uas raug hlawv raug cua sov sib npaug, siav los ntawm sab hauv mus rau sab nraud, thiab lub sijhawm cua sov luv luv, tsis yog tsuas yog saj huv si xwb, tab sis kuj tseem muaj cov as-ham qub ntawm cov khoom noj tuaj yeem raug kaw. Peb tau ua kev sim, thaum lub lauj kaub graphite siv rau kev ci, lub qhov cub induction ntaus hluav taws thaum pib, thiab nws tuaj yeem preheated hauv tsuas yog 20-30 vib nas this, thiab thaum cov khoom noj pib, nws tuaj yeem ua si ntawm hluav taws me me, uas tuaj yeem txuag hluav taws xob.

3, cov khoom graphite muaj kev ruaj khov tshuaj lom neeg thiab kev tiv thaiv corrosion.

Graphite muaj kev ruaj khov tshuaj zoo nyob rau hauv chav tsev kub thiab tsis raug tawm tsam los ntawm cov kua qaub muaj zog, cov hauv paus muaj zog thiab cov kuab tshuaj organic. Yog li ntawd, txawm tias siv graphite ntev ntev los kuj tsis muaj kev poob qis, tsuav yog so nws kom huv si zoo li tshiab.

4 cov khoom graphite muaj cov tshuaj tiv thaiv oxidation thiab txo qis.

Cov khoom lag luam, tshwj xeeb tshaj yog cov cua sov graphite txaj tuaj yeem tsim cov pa oxygen tsis zoo, ua rau cov khoom nyob ib puag ncig ua haujlwm, tswj kev noj qab haus huv ntawm tib neeg, tiv thaiv kev laus, ua rau daim tawv nqaij puv npo thiab elasticity.

5, cov khoom graphite kev noj qab haus huv ib puag ncig, tsis muaj kuab paug radioactive, tiv taus kub siab.

Cov pa roj carbon tuaj yeem ua graphite tom qab tsawg kawg yog kaum ob hnub thiab hmo ntuj ntawm graphitization hauv qhov kub siab ntawm 2000-3300 degrees, yog li cov tshuaj lom thiab cov tshuaj lom hauv graphite tau tso tawm ntev thiab ruaj khov hauv tsawg kawg yog 2000 degrees.

Tib lub sijhawm, cov khoom graphite vim nws cov qauv tshwj xeeb, nrog rau kev tiv taus kub siab, kev tiv taus thermal shock, kev ua hluav taws xob, lubrication, kev ruaj khov tshuaj lom neeg thiab plasticity thiab ntau lwm yam ntxwv, tau yog ib qho chaw tseem ceeb hauv kev txhim kho tub rog thiab kev lag luam niaj hnub thiab kev siv tshuab siab, tshiab thiab ntse, cov khoom graphite, xws li graphite rings, graphite nkoj siv dav. Cov kws tshaj lij thoob ntiaj teb tau kwv yees tias "xyoo pua 20th yog xyoo pua ntawm silicon, xyoo pua 21st yuav yog xyoo pua ntawm carbon."

Raws li ib qho khoom siv tseem ceeb uas tsis yog hlau, kev lag luam graphite yuav raug siv los tswj kev nkag mus. Nrog rau kev siv lub kaw lus nkag mus, graphite, cov khoom graphite, yuav dhau los ua lwm yam tom qab cov khoom siv av tsawg, tshuaj fluorine, tshuaj phosphorus, thiab cov tuam txhab ua lag luam hauv daim teb no yuav nkag mus rau theem tshiab ntawm kev txhim kho.