1. Cov khoom xyaw sib txawv

Nickel chromium alloyhlau yog tsim los ntawm npib tsib xee (Ni) thiab chromium (Cr), thiab tej zaum kuj muaj me me ntawm lwm cov ntsiab lus. Cov ntsiab lus ntawm npib tsib xee hauv nickel-chromium alloy feem ntau yog li 60% -85%, thiab cov ntsiab lus ntawm chromium yog li 10% -25%. Piv txwv li, cov nickel-chromium alloy Cr20Ni80 muaj cov ntsiab lus chromium txog li 20% thiab cov ntsiab lus nickel txog li 80%.

Lub ntsiab ntawm tooj liab hlau yog tooj liab (Cu), uas nws purity ncav cuag ntau tshaj 99.9%, xws li T1 ntshiab tooj liab, tooj liab cov ntsiab lus siab txog 99.95%.

2.Different Physical Properties

Xim

- Nichrome hlau feem ntau yog nyiaj grey. Qhov no yog vim nws yog xim hlau luster ntawm npib tsib xee thiab chromium sib xyaw kom muab cov xim no.

- Cov xim tooj liab yog xim liab, uas yog xim ntawm tooj liab thiab muaj xim hlau nplaum.

Qhov ntom

- Lub linear ntom ntawm nickel-chromium alloy yog qhov loj, feem ntau nyob ib ncig ntawm 8.4g / cm³. Piv txwv li, 1 cubic meter ntawm nichrome hlau muaj qhov hnyav txog li 8400 kg.

- Covxov toojQhov ceev yog li ntawm 8.96g / cm³, thiab tib lub ntim ntawm tooj liab hlau yog me ntsis hnyav dua nickel-chromium alloy hlau.

Melting Point

-Nickel-chromium alloy muaj lub siab melting point, nyob ib ncig ntawm 1400 ° C, uas ua rau nws muaj peev xwm ua hauj lwm nyob rau hauv siab kub yam tsis melting yooj yim.

-Lub melting point ntawm tooj liab yog hais txog 1083.4 ℃, uas yog qis dua cov nickel-chromium alloy.

Hluav taws xob conductivity

-Copper xaim ua hluav taws xob zoo heev, nyob rau hauv tus qauv qauv, tooj liab muaj hluav taws xob conductivity ntawm 5.96 × 10 kwv yees S / m. Qhov no yog vim hais tias cov qauv hluav taws xob ntawm tooj liab atoms tso cai rau nws ua haujlwm zoo tam sim no, thiab nws yog cov khoom siv hluav taws xob uas nquag siv, uas yog siv dav hauv cov teb xws li kev xa hluav taws xob.

Nickel-chromium alloy hlau muaj hluav taws xob tsis zoo, thiab nws cov hluav taws xob conductivity qis dua li tooj liab, txog 1.1 × 10⁶S / m. Qhov no yog vim lub atomic qauv thiab kev sib cuam tshuam ntawm npib tsib xee thiab chromium nyob rau hauv lub alloy, thiaj li hais tias cov conduction ntawm electrons yog hindered rau ib tug tej yam kev mob.

Thermal conductivity

-Copper muaj thermal conductivity zoo heev, nrog rau thermal conductivity txog 401W / (m·K), uas ua rau tooj liab dav siv nyob rau hauv qhov chaw uas yuav tsum tau thermal conductivity zoo, xws li cov cua kub dissipation li.

Lub thermal conductivity ntawm npib tsib xee-chromium alloy yog qhov tsis muaj zog, thiab cov thermal conductivity feem ntau ntawm 11.3 thiab 17.4W / (m·K)

3. Cov khoom siv tshuaj sib txawv

Corrosion Resistance

Nickel-chromium alloys muaj corrosion kuj zoo, tshwj xeeb tshaj yog nyob rau hauv kub kub oxidation ib puag ncig. Npib tsib xee thiab chromium form ib tug dense oxide zaj duab xis nyob rau saum npoo ntawm alloy, tiv thaiv kev tawm tsam oxidation ntxiv. Piv txwv li, nyob rau hauv huab cua kub, txheej ntawm oxide zaj duab xis no tuaj yeem tiv thaiv cov hlau hauv cov hlau los ntawm kev xeb ntxiv.

- Tooj yog yooj yim oxidized nyob rau hauv cov huab cua los ua ib tug vercas (pab tooj liab carbonate, formula Cu₂(OH)₂CO₃). Tshwj xeeb tshaj yog nyob rau hauv ib qho chaw ntub dej, qhov chaw ntawm tooj liab yuav maj mam corroded, tab sis nws cov corrosion kuj nyob rau hauv ib co non-oxidizing acids kuj zoo.

Tshuaj Stability

- Nichrome alloy muaj tshuaj lom neeg ruaj khov thiab tuaj yeem nyob ruaj khov thaum muaj ntau yam tshuaj. Nws muaj qee qhov kam rau cov kua qaub, cov hauv paus thiab lwm yam tshuaj, tab sis nws kuj tuaj yeem ua rau muaj zog oxidizing acids.

- tooj liab nyob rau hauv ib co muaj zog oxidants (xws li nitric acid) nyob rau hauv qhov kev txiav txim ntawm ib tug hnyav tshuaj tiv thaiv, cov tshuaj sib npaug sib npaug yog \(3Cu + 8HNO₃(dilute) = 3Cu(NO₃ +2NO↑ + 4H₂O\).

4. Kev siv sib txawv

- nickel-chromium alloy hlau

- Vim nws qhov kev tiv thaiv siab thiab kub tsis kam, nws feem ntau yog siv los ua hluav taws xob cua sov, xws li cov cua sov hauv cov qhov cub hluav taws xob thiab hluav taws xob cua sov. Hauv cov khoom siv no, nichrome xov hlau muaj peev xwm hloov hluav taws xob hluav taws xob zoo rau hauv tshav kub.

- Nws kuj tseem siv tau rau qee lub sijhawm uas cov khoom siv kho tshuab yuav tsum tau khaws cia hauv qhov chaw kub thiab txias, xws li cov khoom txhawb nqa ntawm cov cua kub kub.

- Tooj hlau

- Copper hlau yog tsuas yog siv rau kev xa hluav taws xob, vim tias nws cov khoom siv hluav taws xob zoo tuaj yeem txo qhov poob ntawm lub zog hluav taws xob thaum sib kis. Hauv cov kab hluav taws xob hluav taws xob, ntau cov xov tooj tooj liab tau siv los ua cov xov hlau thiab cables.

- Nws kuj yog siv los ua kev sib txuas rau cov khoom siv hluav taws xob. Hauv cov khoom siv hluav taws xob xws li khoos phis tawj thiab xov tooj ntawm tes, cov xov tooj tooj liab tuaj yeem paub txog cov teeb liab kis tau tus mob thiab cov khoom siv hluav taws xob ntawm ntau yam khoom siv hluav taws xob.