Cov hlau oxide pigments yog siv dav hauv ntau qhov kev lag luam vim lawv cov chromatogram dav, tsis muaj ntxhiab, tsis muaj kuab lom, thiab tsis tshua muaj nuj nqi. Kev lag luam ceramic muaj tsis muaj kev zam. Xyoo tsis ntev los no, nrog rau kev txhim kho hauv cov kev lag luam ceramic, cov nqi ntawm cov hlau oxide pigments hauv kev lag luam ceramic kuj tseem nce xyoo los ntawm xyoo.
1. thov:
Cov khoom lag luam Ceramic tau muab faib ua xya pawg: architectural ceramics, ceramics huv, garden glazed ceramics, kos duab kos duab ceramics, niaj hnub siv ceramics, ceramics industrial, thiab ceramics tshwj xeeb. Iron oxide pigments yog siv dav hauv xya hom ntawm cov khoom lag luam ceramic.
2. Cov yam ntxwv thiab cov hauv paus ntsiab lus:
Hlau oxide pigments muaj cov xim zoo nkauj zoo. Cov khoom tha xim ntawm cov hlau oxide tsuas yog siv rau hauv ceramics los npaj cov xim ntau ntawm cov dej ci. Vim tias tus nqi sib txawv ntawm cov hlau ions, cov hlau oxide nws tus kheej yog ntau xim. Thaum sib ntxiv rau lwm cov glazes Thaum siv cov hlau oxide, lub suab ntsej muag yog muaj zog thiab ci ci dua. Tsis tas li ntawd, nyob rau hauv kev tsim cov txheej txheem ntawm ceramics (ci), sib txawv hluav taws kub cua tau siv, thiab cov xim ntawm hlau oxide kuj sib txawv. Hauv qhov chaw muaj hluav taws xob oxidizing, cov xim ntawm hlau oxide hloov los ntawm daj mus rau xim av xim av, thiab tom qab ntawd hloov mus rau txiv kab ntxwv liab. Xim av. Hauv cov huab cua txo qis, xim hloov pauv ntawm xiav rau grey thiab tsaus. Cov kev hloov pauv no yog tshwm sim los ntawm kev sib nrig sib hloov pauv ntawm qhov sib npaug ntawm qhov zoo sib xws ntawm Fe2+ thiab Fe3+ hauv txheej txheej nplaum.
1. Daim ntawv thov ntawm cov hlau oxide yog cov khoom siv ntawm lub cev ntsuab: lub cev ntsuab yog cov khoom siv yooj yim ntawm ceramics.
Cov hlau oxide yog siv los ua cov khoom siv xim ntawm lub cev ntsuab thiab yog tsuas yog siv rau hauv phab ntsa thiab pem teb nplais khoom ntawm cov khoom siv txua ntoo. Piv txwv, rau imitation granite unglazed vuas vov cov vuas, cov txheej txheem npaj xim:
Cov hlau oxide xim thiab ib qho me me ntawm seem tau muab sib xyaw ua ke rau hauv cov xim tso rau hauv pob zeb, thiab tom qab ntawd tswj los ntawm lub tshuab nqus hlau ntsuas kom nkag mus rau hauv qhov tov. Hauv cov tov khoom, ib qho kev faib ua feem ntawm cov xim muab tshuaj txhuam thiab lub hauv paus muab tshuaj yog sib xyaw ntawm kev kub ceev los ua cov xim tso xim, thiab cov xim pleev xim thiab lub hauv paus muab tshuaj yog feem sib xyaw kom txau rau hauv cov ntauwd kom qhuav tsim cov xim hmoov.
Daim ntawv qhia rau cov txheej txheem ntau lawm ntawm imitation granite unglazed porcelain vuas:
Cov khoom siv yas 20-30%
Askiv thiab lwm cov ntaub ntawv ua rau cov qe muaj roj ntau txog 20-40%
Feldspar flux raw khoom 20-30%
Cov tshuaj pleev xim tshwj xeeb ntxiv rau 1-5% (xws li hlau oxide, chromium oxide, thiab lwm yam)
Vim tias nws cov xim muaj nuj nqi zoo heev, hlau oxide tau dhau los ua cov khoom siv tseem ceeb rau kev npaj ntawm granite-zoo li unglazed cov plooj (veneers) vuas. Piv txwv li, tshuaj lom neeg muaj pes tsawg leeg ntawm daj imitation granite plooj (pob zeb ua) yog:
SiO269%, Al2O318%, Fe2O3 ＋ TiO23%
CaO ＋ MgO1.5%, K2O ＋ Na2O4.5%, tiv thaiv kev poob qis 4%
Ntxiv rau, cov hlau oxide pigments tseem ntxiv rau qee cov ntaub ntawv raw ntawm cov av nplaum xim av puab cov khoom lag luam kom kho cov xim ntawm cov av nplaum khoom.
2. Daim ntawv thov ntawm hlau oxide nyob rau hauv cov xim ceramic glaze: Lub ntsej muag yog tas mus li ntawm cov vitreous txheej txuas rau cov nplais ceramic.
Hauv cov khoom siv dog dig zoo tib yam, cov xim muaj hlau ntawm cov hlau oxide tsuas yog siv los npaj ntau xim ntawm glaze dej. Lub valence ntawm hlau ions sib txawv, thiab cov hlau oxide nws tus kheej nthuav tawm xim sib txawv. Piv txwv, ferrous oxide (Fe2O3) yog hmoov liab, thiab ferrous oxide (FeO) thiab ferroferric oxide (Fe3O4) yog hmoov dub.
Sib txawv cov hlau oxide sib txuas tuaj yeem xaiv tau raws li kev xav tau. Ntxiv nrog rau cov xim muaj hlau ntau xim nws tus kheej, thaum hlau oxide ntxiv rau lwm yam ntsej muag, nws tuaj yeem ua rau cov ntsej muag ci nplua nuj thiab ci ntsa iab. Piv txwv li, hlau oxide ntxiv rau ntxiv rau lub ntsej muag boric acid uas muaj alkali co xim kom qhia tau cov xim liab ntawm cov cawv; thaum hlau oxide ntxiv rau qhov ci ci thiab matt dawb ci, cov koob ntawm cov duab ntxoov ntxoo los ntawm lub teeb xim av, daj grey thiab camel rau tsaus xim av yog nthuav tawm; thaum thaum hlau oxide siv los ua kom daj daj, tsuas yog ob peb feem pua ntawm cov hlau oxide xav tau ntxiv txhawm rau qhia cov xim daj muaj zog.
