xim thiab chromium oxide

Nyob rau hauv cov xim inorganic ntau, tshwj tsis yog chromium oxide thiab chromium hydroxide, uas muaj nyob rau hauv Cr^{3 plus ib}, tag nrho cov chromium muaj nyob rau hauv 6-valent chromate (CrO^2-4).Lawv yog (PbCrO4), Pb(S,Cr)O4, Molybdenum txiv kab ntxwv [Pb (S, Cr, Mn) O4].Cov khoom siv xim av thiab cov xim dub hauv cov xim ceramic yog yuav luag tag nrho cov spinels.Chromium yog cov khoom tseem ceeb hauv Ca-Cr-Si, Cr-Al（Si）, Co(Zn)-(Al)-Cr ntawm cov xim ntsuab, thiab hauv Zn-Al-Cr liab pigments.

Cov xim zoo li Ca-Sn-Si-Cr maroon, Ca-Sn-Si-Cr-Co ntshav thiab qee cov xim uas tsis tuaj yeem siv rau xim, cov chromium kuj yog cov ntsiab lus tseem ceeb ntawm lawv. Yog li cov xim ntawm Ti-Cr-Sb, Ti-Cr-W daj rau lub cev pigment.Nyob rau hauv cov nqe lus ntawm kom muaj nuj nqis, chromium-soluble chromaticity yuav siv sij hawm ntau tshaj qhov muaj ntawm tag nrho cov tooj ntawm ceramic chromaticity.

Cr3 ntxiv yog qhov nyuaj tshaj plaws cation los ua ke hauv silicate iav.

Lub glaze kuj tseem raug suav hais tias yog hom silicate iav.Yog li Cr^{3 plus ib}yog qhov ruaj khov tshaj plaws cation nyob rau hauv lub glaze.Raws li ib tug 3-, 4-, 5- valence cation, nyob rau hauv kev koom tes nrog O^2-, nws xav tau ntau tshaj 6 kev sib koom tes.Piv txwv li, Cr^{3 plus ib}(6),Sn^{4 plus ib}(6),Zr^{4 plus ib}(7 los yog 8), cov oxides no ntxiv rau iav raw cov ntaub ntawv thiab yog insoluble nyob rau hauv iav kua.yog vim li cas vim li cas cov ntaub ntawv xim tshiab ntawm zircon, zircon thiab Stannite yog qhov ruaj khov heev hauv glaze.

Nws yuav tsum tsis txhob ntxiv Cr2O3 ncaj qha rau hauv glaze.Nws yuav tsum tau ua ntej diluted thiab ces ntxiv rau glaze nrog Al203,SiO2 Raws li cov khoom xyaw tseem ceeb.Piv txwv li, Cr-Al thiab cov khoom siv ntsuab thiab Cr-Al-Si yog tsim los ntawm calcining Cr203ua ke nrog kaolinite [Al2O3· 2 TSI2·2H2O] los yog lasite [Al203· 4 TSI2·H2O] tom qab sib tov lawv.

Lwm txoj kev xav rau dilution ntawm Cr2O3, kaolinite thiab waxite yog lub peev xwm xim muaj zog ntawm Cr2O3.Thaum xim nyob rau hauv glaze, nws yog ib qhov tsim nyog los ntxiv me me kom ua tiav cov nyhuv.

Nyob rau hauv ntau qhov ntau ntawm glaze, nws tsis tuaj yeem tawg ib qho me me ntawm Cr2O3tusyees.Yog li ntawd, nws yog ib qho yooj yim rau disperse Cr2O3Thaum nws yog diluted rau hauv kaolinite thiab ntxiv rau hauv glaze.Nws yuav ua rau cov xim zoo ib yam.