1.Yuav ua li cas yog zinc oxide tsim?
Conductivity ntawm Pure Zinc: Hlau zinc yog ib tug zoo conductor, nrog ib tug conductivity ntawm kwv yees li 27% -29% ntawm tus qauv annealed tooj liab (IACS). Txawm hais tias tsis zoo li tooj liab thiab txhuas, nws tseem muaj cov conductivity zoo.
Cov yam ntxwv ntawm Zinc Oxide: Thaum lub npoo ntawm galvanized coil oxidizes, nyias zaj duab xis ntawm zinc oxide (ZnO) cov ntaub ntawv. Zinc oxide yog qhov dav -bandgap semiconductor nrog qhov kev tiv thaiv ntau dua li cov hlau zinc.
Resistivity ntawm hlau zinc: kwv yees li 5.9 × 10⁻⁸ Ω·m
Resistivity ntawm zinc oxide: tuaj yeem ncav cuag 10⁻³ txog 10⁵ Ω·m, lossis siab dua (nyob ntawm purity thiab qauv), ntau lab lossis ntau lab lub sijhawm siab dua li cov hlau zinc.
Cov yeeb yaj kiab nyias ntawm zinc oxide no ua tau zoo ntxiv rau qhov siab -cov txheej txheem tiv thaiv hauv cov kab nrog rau txoj kev coj mus, txo qhov kev coj ua tag nrho.
2.Dab tsi ntawm qhov cuam tshuam nyob ntawm?
Mild Oxidation (piv txwv li, "dawb xeb"):
Qhov tshwm sim oxide zaj duab xis yog feem ntau nyias, ntxeem tau, thiab xoob.
Impact: Cov nyhuv ntawm conductivity yog tsawg heev, raws li electrons tseem tuaj yeem yooj yim kis tau los ntawm cov pores me me lossis cov ntsiab lus tsis muaj zog hauv zaj duab xis (tunneling effect). Hauv ntau daim ntawv thov uas conductivity tsis tseem ceeb, cov nyhuv no tuaj yeem tsis quav ntsej.
Oxidation hnyav:
Cov oxide zaj duab xis ua thicker thiab denser, thiab tej zaum yuav tsim ntau dua corrosion khoom xws li zinc carbonate.
Kev cuam tshuam: hluav taws xob conductivity txo qis. Cov tuab, ntom insulating txheej ho impedes cov ntws ntawm tam sim no. Nyob rau hauv cov ntaub ntawv no, galvanized kauj yuav tsis haum rau daim ntaub ntawv uas yuav tsum tau high conductivity.
3.Yuav ua li cas cov conductivity ntawm txawv deg xeev sib piv?
Zinc txheej txheej: zoo hluav taws xob conductivity; metallic zinc nws tus kheej yog tus neeg xyuas pib zoo.
oxidation me ntsis (nyias dawb xeb): me ntsis txo hluav taws xob conductivity; zinc oxide insulating zaj duab xis yog nyias thiab ntxeem tau, cia cov electrons nkag mus.
4.Dab tsi yog kev ceev faj hauv kev siv tswv yim?
Grounding systems: Qhov no yog daim ntawv thov feem ntau siv hluav taws xob. Galvanized steel feem ntau yog siv rau hauv av electrodes thiab daim phiaj hauv av. Cov qauv yuav tsum muaj tsawg txaus grounding kuj. Kev hnyav oxidation ntawm zinc txheej ua rau muaj kev sib cuag ntawm cov av electrode thiab cov av, impairing tam sim no ntws. Yog li ntawd, thaum lub sij hawm installation, tsis txhob siv cov khoom hnyav oxidized galvanized los yog ntxuav nws ua ntej siv.
Kev sib txuas hluav taws xob: Yog tias lub galvanized coil yog siv los ua ib feem ntawm tus neeg xyuas pib thiab kev sib txuas hluav taws xob (xws li crimped bolt) yog ua rau ntawm qhov chaw oxidized, txheej oxide ua rau siab -tsis kam cuam tshuam, ua rau overheating thiab ua rau tsis ua hauj lwm. Yog li ntawd, kev sib txuas hluav taws xob yuav tsum tau muab txhuam los yog polished tam sim ntawd kom nthuav tawm cov xim hlau ci ntsa iab, thiab yuav tsum tau siv cov tshuaj nplaum tsim nyog los xyuas kom muaj hluav taws xob zoo.
Cheebtsam xws li capacitors thiab inductors: Hauv cov ntawv thov no, galvanized steel sawb qee zaum siv los ua vaj tse lossis cov khoom siv. Thaum me ntsis oxidation feem ntau muaj kev cuam tshuam me ntsis ntawm kev ua tau zoo tag nrho, nws lav qhov kev ntsuam xyuas yog tias nws ua ib feem ntawm txoj kev tam sim no.
5.Yuav ua li cas oxidation cuam tshuam rau hluav taws xob conductivity?
Xaus: Nto oxidation ntawm galvanized coils txo lawv cov hluav taws xob conductivity los ntawm kev tsim cov zinc oxide txheej nrog siab heev resistivity.
Qhov cuam tshuam: Nyob ntawm qhov℃ntawm oxidation. Cov oxidation me me muaj qhov cuam tshuam me me, thaum oxidation hnyav tuaj yeem ua rau cov conductivity tsawg.
Kev tiv thaiv:
Cia: Khaws kom zoo nyob rau hauv qhov chaw ntub dej kom tsis txhob oxidation.
Ua ntej-siv Kev Tshawb Fawb: Tsis txhob siv cov khoom siv oxidized hnyav rau cov ntawv siv hluav taws xob.
Kev npaj kev sib txuas hluav taws xob: qhov twg yuav tsum muaj kev sib txuas hluav taws xob, txheej txheej oxide saum npoo thiab plating yuav tsum tau muab tshem tawm kom huv si kom ntseeg tau tias cov hlau ncaj nraim - mus rau - hlau kov.