Lub Xim Xim Ntawm Gr4 Titanium Parts tsim li cas?

Titanium xim nto yog vim oxidation ntawm qhov chaw los tsim titanium dioxide, titanium dioxide oxide zaj duab xis ntawm txawv thicknesses ntawm lub teeb refractive ntawm cov xim sib txawv, yog li tsim ntawm ntau yam xim. General titanium coloring oxidation, muab faib ua atmospheric method, anodic oxidation method, deposition method. Niaj hnub no peb yuav qhia txog txoj kev siv anodic oxidation tshaj plaws.

Titanium anodic oxidation, titanium thiab nws cov alloys tau muab tso rau hauv cov khoom siv electrolyte (xws li sulfuric acid, chromic acid, oxalic acid, thiab lwm yam) raws li cov anode, thiab electrolysis yog nqa tawm nyob rau hauv tej yam kev mob thiab cov nyhuv ntawm cov ntaub ntawv tam sim no. Anode ntawm titanium los yog nws cov alloy oxidation, tsim ib txheej nyias ntawm titanium oxide nyob rau saum npoo, thickness ntawm 5 ~ 30 microns, nyuaj anodic oxide zaj duab xis mus txog 25 ~ 150 microns. Tom qab anodic oxidation ntawm titanium los yog nws alloys, txhim kho nws hardness thiab hnav tsis kam, mus txog 250 ~ 500 kg / mm2, zoo tshav kub kuj, nyuaj anodic oxidation zaj duab xis melting point txog li 2320K, zoo heev rwb thaiv tsev, tawg voltage txog li 2000V, txhim kho corrosion kuj, nyob rau hauv lub ω=0.03NaCl ntsev tsuag tom qab ntau txhiab teev tsis-corrosion. Oxide zaj duab xis nyias txheej nrog ib tug loj tus naj npawb ntawm microporous, muaj peev xwm adsorb ntau yam ntawm lubricants, haum rau tsim lub cav lub tog raj kheej los yog lwm yam hnav qhov chaw; zaj duab xis microporous adsorption muaj peev xwm tuaj yeem pleev xim rau hauv ntau yam xim zoo nkauj thiab muaj yeeb yuj. Cov hlau tsis-ferrous lossis lawv cov alloys (xws li titanium, magnesium thiab nws cov alloys, thiab lwm yam) tuaj yeem ua tau anodized, txoj kev no yog siv dav hauv cov tshuab, dav hlau thiab tsheb qhov chaw, cov cuab yeej precision thiab cov khoom siv hauv xov tooj cua, cov khoom siv niaj hnub thiab kev tsim kho vaj tse thiab lwm yam. Feem ntau hais lus, lub anode yog titanium los yog titanium alloy li anode, lub cathode yog xaiv cov hlau phaj, titanium thiab txhuas phaj ua ke nyob rau hauv aqueous tov, uas muaj sulfuric acid, oxalic acid, chromic acid, thiab lwm yam, electrolysis, thiaj li nyob rau saum npoo. ntawm titanium thiab txhuas phaj los ua ib hom oxidized zaj duab xis.

Cov khoom siv titanium ntshiab muaj txheej tuab ntawm oxidized zaj duab xis rau ntawm qhov chaw, uas tuaj yeem ua tau zoo rau ntau qhov chaw ntawm chav tsev kub, yog li tsis tas yuav tsum tau txau, ntshiab titanium kettles muaj zog corrosion kuj. Taug kev tsis muaj zog acid lossis alkali ib puag ncig sab nraum zoov, titanium kettle ntshiab tuaj yeem tiv nrog dawb, tsis hais dej los yog nag, pob zeb lossis zaub, ntshiab titanium kettle tuaj yeem tiv tauj nrog nws yam tsis muaj corroded. Raws li tag nrho lub cev ntawm lub raj mis tsis pleev xim rau, lub hwj qhia pom cov xim grey tshwj xeeb ntawm cov khoom siv titanium ntshiab, uas tuaj yeem ua kom sov ncaj qha rau ntawm qhov hluav taws kub kom dhau los ua xim dazzling. Lub titanium kettle cov xim ci ntsa iab ntawm titanium hlau yog them nrog txheej nyias nyias ntawm ib txwm muaj oxide zaj duab xis (titanium thiab oxide TiO2). Cov txheej ntawm zaj duab xis no tuaj yeem dhau los ua titanium xeb, vim tias nws qhov chaw ua rau lub siab refractive Performance index ntawm pob tshab zaj duab xis, zaj duab xis plays lub luag hauj lwm ntawm lub prism, thiaj li hais tias lub refraction ntawm lub teeb absorbs txawv wavelengths ntawm lub teeb, koj yuav pom cov xim, thiab, yog hais tias lub thickness ntawm no txheej ntawm oxidized zaj duab xis yog artificially kho rau 8 ~ 10um, raws li qhov sib txawv wavelengths, tuaj yeem nthuav tawm ntau txhiab xim zoo sib xws. Vim tias cov yeeb yaj kiab no yog cov yeeb yaj kiab pob tshab uas muaj qhov ntsuas siab refractive, nws tuaj yeem pom cov xim zoo nkauj.

Photocatalysts tau pom thawj zaug los ntawm cov kws tshawb fawb Nyij Pooj, thiab lawv cov txiaj ntsig tau lees paub los ntawm Japanese kws tshawb fawb Takao Guan thaum ntxov xyoo 1965. Tom qab ntawd, University of Tokyo, xibfwb Hondo Kenichi thiab nws tus thwj tim Fujishima Akira nrhiav pom hauv 1972 nrog lub teeb irradiation ntawm titanium dioxide electrodes, uas. tuaj yeem ua rau dej electrolysis cov tshuaj tiv thaiv "Hondo-Fujishima effect", qhov kev xav. Tshaj li 30 xyoo dhau los, ntau tus kws tshaj lij hauv txoj kev no, kev tshawb fawb mob siab rau, thiab thaum kawg ob peb xyoos dhau los pib siv nws rau kev tua kab mob hauv tsheb thiab tshuaj tua kab mob thiab lwm yam haujlwm.

Photocatalyst yog ib hom tshiab catalyst nrog nano-scale titanium dioxide ua cov khoom tseem ceeb, uas reacts nyob rau hauv lub irradiation ntawm lub teeb. Photocatalyst muaj lub zog ntawm kev sib kis thiab ntxuav: nws tuaj yeem tsis tsuas yog siv los ua kom cov av hauv dej, tshem tawm cov ntxhiab, tab sis kuj tuaj yeem txau rau ntawm phab ntsa sab hauv thiab sab nrauv ntawm lub tsev, kom nws tiv taus cov plua plav thiab av adhesion rau lub sij hawm ntev, kom tswj tau lub xeev ntawm pawg tshiab. Raws li kev txhim kho ntawm cov neeg ua haujlwm, titanium dioxide nyob rau hauv kev nqus ntawm ultraviolet lub teeb nyob rau hauv lub hnub, lub sab hauv electron yuav txhawb kom tsim tau ib tug muaj zog oxidizing muaj peev xwm, kev puas tsuaj rau lub cell membrane ntawm lub cell, muaj peev xwm cuab thiab tua ntau tshaj 99. % ntawm huab cua hauv cov kab mob plankton. Tsis tas li ntawd, nws tuaj yeem hloov cov organic thiab cov pa phem rau hauv cov dej tsis zoo, carbon dioxide thiab ntsev los ntawm cov tshuaj tiv thaiv redox, thiaj li ua tiav cov txiaj ntsig ntawm dej huv thiab huab cua huv.