Chromium hmoov yog cov hmoov hlau ntau, feem ntau yog siv rau hauv kev tsim khoom ntawm ntau yam muaj zog, corrosion-resistant alloys thiab khoom.

Taw qhia ntawm chromium hmoov

Chromium hmoov yog cov hmoov hlau ua los ntawm chromium, cov mis molecular yog Cr, molecular hnyav yog 51.99.Nws muaj qhov zoo, du, nyiaj dawb lossis grey, nyuaj heev.Chromium hmoov yog cov hmoov hlau tseem ceeb, uas yog siv dav hauv kev tsim khoom, hluav taws xob, aerospace thiab lwm yam haujlwm.

Lub cev thiab tshuaj muaj zog ntawm chromium hmoov

Lub cev muaj zog ntawm cov hmoov chromium muaj xws li siab ceev, zoo hluav taws xob conductivity thiab corrosion kuj.Nws muaj qhov ntom ntom ntawm 7.2g / cm3, lub melting point ntawm 1857 ° C thiab boiling point ntawm 2672 ° C. Chromium hmoov tsis yooj yim rau oxidize ntawm chav tsev kub, muaj zoo corrosion kuj, muaj peev xwm tiv taus acid, alkali, ntsev thiab lwm yam tshuaj muaj zog corrosion.

Cov khoom siv tshuaj ntawm chromium hmoov yog cov nquag nquag thiab tuaj yeem ua rau muaj ntau yam tshuaj lom neeg.Piv txwv li, chromium hmoov tuaj yeem hnov ​​​​mob nrog dej los tsim chromium hydroxide thiab tso tawm hydrogen.Tsis tas li ntawd, chromium hmoov tuaj yeem cuam tshuam nrog ntau cov oxidants thiab oxidized rau trivalent chromium ions.

Txoj kev npaj ntawm chromium hmoov

Txoj kev npaj ntawm chromium hmoov feem ntau suav nrog txoj kev electrolysis, txoj kev txo qis thiab oxidation txoj kev.Electrolysis yog ib txoj hauv kev npaj kom tau chromium hmoov los ntawm electrolysis ntawm chromium ntsev tov ntawm qhov kub thiab txias.Txoj kev txo qis yog los ua cov chromium ore nrog carbon ntawm qhov kub thiab txias los tsim chromium carbide, thiab tom qab ntawd tsoo nws kom tau chromium hmoov.Txoj kev oxidation yog txo cov tshuaj tiv thaiv ntawm chromium oxide ntawm qhov kub thiab txias los tsim cov hmoov chromium.Ntau txoj hauv kev muaj qhov zoo sib txawv thiab qhov tsis zoo, thiab txoj kev npaj tsim nyog yuav tsum tau xaiv raws li qhov xav tau.

Daim ntawv thov thaj chaw ntawm chromium hmoov

Daim ntawv thov teb ntawm chromium hmoov yog dav heev, feem ntau suav nrog cov hlau tsis muaj hlau ua, cov khoom siv hauv tsev, txheej pretreatment, roj teeb kev lag luam thiab lwm yam.Hauv kev ua haujlwm ntawm cov hlau tsis muaj hlau, cov hmoov chromium tuaj yeem siv los tsim ntau yam muaj zog, corrosion-resistant alloys thiab cov khoom, xws li stainless hlau, cuab yeej steel, high-speed steel thiab lwm yam.Hauv kev tsim cov khoom siv hauv tsev, chromium hmoov tuaj yeem siv los tsim ntau yam kev tiv thaiv corrosion, kub kub ceramic thiab iav khoom.Hauv thaj tsam ntawm txheej txheej pretreatment, chromium hmoov tuaj yeem siv los tsim ntau yam tshuaj hloov pauv tshuaj, xws li cov tshuaj hloov pauv chromate thiab phosphate hloov pauv.Hauv kev lag luam roj teeb, chromium hmoov tuaj yeem siv los tsim ntau yam khoom siv roj teeb electrode, xws li cov roj teeb nickel-cadmium thiab nickel-hlau hydride roj teeb.

Chromium hmoov kev nyab xeeb thiab kev tiv thaiv ib puag ncig

Chromium hmoov yog ib yam khoom txaus ntshai, kev raug mob mus ntev yuav ua rau muaj kev kub ntxhov thiab kev puas tsuaj rau tib neeg cov tawv nqaij, qhov muag thiab ua pa, thiab thaum mob hnyav tuaj yeem ua rau mob qog noj ntshav.Yog li ntawd, hauv kev tsim, siv thiab tuav cov hmoov chromium, nws yog ib qho tsim nyog yuav tsum ua raws li cov txheej txheem kev nyab xeeb thiab kev tswj hwm ib puag ncig.Nyob rau tib lub sijhawm, cov txheej txheem pov tseg uas tsim nyog, xws li kev faus tob tob, incineration lossis tshuaj kho mob, yuav tsum tau siv los txo qhov cuam tshuam rau ib puag ncig thiab tib neeg kev noj qab haus huv.

Nyob rau hauv luv luv, chromium hmoov yog ib qho tseem ceeb hlau hmoov, nrog rau ntau yam kev siv thiab tseem ceeb nyiaj txiag nqi.Tom qab nkag siab txog nws cov yam ntxwv yooj yim, cov txheej txheem npaj, daim ntawv thov teb thiab kev nyab xeeb thiab kev tiv thaiv ib puag ncig, peb tuaj yeem nkag siab zoo dua nws cov kev paub txog thiab daim ntawv thov.Tib lub sijhawm, peb kuj yuav tsum tau ua tib zoo saib xyuas kev tiv thaiv ib puag ncig thiab tib neeg kev noj qab haus huv, thiab txo qhov cuam tshuam rau ib puag ncig thiab tib neeg.