1.Dab tsi yog cov txheej txheem ntawm kev tsom xam ncaj qha/quantitative?
X-ray photoelectron spectroscopy (XPS) Lub hauv paus ntsiab lus: X-rays yog siv los irradiate ib tug qauv, thiab lub zog ntawm electrons emissions los ntawm qhov chaw yog soj ntsuam los txiav txim lub xeev cov tshuaj thiab cov ntsiab lus ntawm nto.
Auger electron spectroscopy (AES) Lub hauv paus ntsiab lus: Siv lub teeb hluav taws xob kom zoo siab thiab txheeb xyuas Auger electrons los ua tus yam ntxwv ntawm cov khoom faib tawm ntawm cov txheej txheej nyias nyias.
Elliptic polarization spectroscopy
Lub hauv paus ntsiab lus: Los ntawm kev ntsuas qhov kev hloov pauv hauv lub xeev polarization ntawm lub teeb polarized tom qab kev cuam tshuam los ntawm cov qauv saum npoo, cov thickness thiab optical qhov tsis tu ncua ntawm cov yeeb yaj kiab nyias tuaj yeem suav tau.
2.Dab tsi yog qee qhov kev kuaj tsis ncaj/zoo/kev ua tau zoo?
Copper sulfate titration test (feem ntau classic thiab feem ntau siv)
Lub hauv paus ntsiab lus: Siv lub hauv paus ntsiab lus ntawm kev hloov pauv cov tshuaj tiv thaiv ntawm tooj liab ions hauv kev daws thiab cov hlau nquag (tsis yog chromium passivated). Ib qho tooj liab sulfate-sulfuric acid tov ntawm ib qho tshwj xeeb concentration yog poob mus rau tus qauv nto, thiab lub sij hawm nws yuav siv sij hawm rau ib tug liab tooj liab plating qhov chaw tshwm sim.
Tshuaj tsuag ntsev
Lub hauv paus ntsiab lus: Cov qauv no tau muab tso rau hauv cov tshuaj tsuag ntsev kom simulate ib puag ncig hnyav corrosive, thiab lub sijhawm nws yuav siv rau xeb kom tshwm sim.
Potassium ferricyanide- kuaj nitric acid (xiav chaw kuaj)
Lub hauv paus ntsiab lus: Tshawb xyuas qhov chaw paug nrog cov hlau dawb lossis hlau ions. Potassium ferricyanide nyob rau hauv cov tshuaj reacts nrog hlau ions los ua ib tug xiav precipitate.
Kev Xeem Electrochemical
Lub hauv paus ntsiab lus: Kev ntsuas qhov qhib - qhov muaj peev xwm ntawm qhov hluav taws xob, qhov hluav taws xob muaj zog polarization nkhaus, lossis electrochemical impedance spectroscopy ntawm cov khoom hauv ib lub cell electrolytic.
3.Yuav ua li cas nrhiav tau txoj kev muaj rau tej yam passivation?
X-ray fluorescence spectrometry (XRF): Txoj kev no tso cai rau tsis yog-kev ntsuas kev puas tsuaj thiab ceev ceev ntawm chromium cov ntsiab lus hauv ib cheeb tsam, yog li indirectly tswj cov yeeb yaj kiab thickness. Nws yog txoj kev siv ntau tshaj plaws rau kev tswj hwm online hauv cov kab ntau lawm.
Spectrophotometry: Txoj kev no txiav txim siab cov ntsiab lus chromium hauv zaj duab xis passivation los ntawm kev ntsuas qhov nqus ntawm cov tshuaj tom qab cov tshuaj tiv thaiv colorimetric tshwj xeeb.
4.Dab tsi yog txoj kev nyiam rau kev tswj hwm txhua hnub ntawm cov yeeb yaj kiab passivation ntawm txias -rolled stainless hlau coils?
Txoj kev nyiam tshaj plaws yog "titration tooj liab sulfate". Nws yooj yim rau kev khiav lag luam, ua raws li cov qauv thoob ntiaj teb, thiab tuaj yeem txiav txim siab seb cov yeeb yaj kiab passivation puas tsim nyog.
5.Lub ntsiab lus xaus yog dab tsi?
Thaum tshuaj xyuas cov zaj duab xis passivation ntawm txias -rolled coils, kev lag luam tsis tshua ntsuas nws lub cev tuab ncaj qha. Hloov chaw, nws ua tiav ntsuas nws qhov muaj pes tsawg leeg, kev ncaj ncees, thiab kev tiv thaiv corrosion los txiav txim seb nws qhov zoo raws li cov qauv. Koj yuav tsum xaiv ib qho kev sib xyaw ua ke uas tsim nyog raws li koj lub hom phiaj kev xeem (kev tswj kom zoo, kev tshawb fawb, kev txheeb xyuas qhov teeb meem) thiab cov peev txheej muaj.