1. Cov yam ntxwv tseem ceeb sib nqus ntawm Monel K500's Matrix
Ntshiab npib tsib xee yog cov hlau ferromagnetic uas muaj zog sib nqus, tab sis nws cov khoom sib nqus yog cov rhiab heev rau cov khoom sib txuas ntxiv. Thaum tooj liab ntxiv rau npib tsib xee los ua ib qho nickel- tooj liab cov tshuaj tov, cov tooj liab atoms cuam tshuam cov txheej txheem ntawm nickel atoms nyob rau hauv cov siv lead ua lattice, cuam tshuam cov kev sib nqus ntawm cov hlau nplaum.
Hauv Monel K500, cov ntsiab lus npib tsib xee nyob ntawm 63.0% txog 67.0%, thiab tooj liab txawv ntawm 27.0% mus rau 33.0%. Ntawm qhov sib piv ntawm qhov sib xyaw no, -theem cov tshuaj tiv thaiv poob muaj zog ferromagnetism thiab cov khoom pov thawjtus cwj pwm paramagneticntawm chav tsev kub. Cov ntaub ntawv paramagnetic tsuas yog tsis muaj zog txaus los ntawm cov chaw sib nqus sab nraud, thiab qhov kev nyiam no ploj mus tam sim ntawd thaum lub chaw sib nqus sab nraud raug tshem tawm.
2. Kev cuam tshuam los ntawm nag lossis daus-Txhim kho cov theem ntawm Magnetism
Cov qauv siv lead ua ntawm Ni₃Al thiab Ni₃Ti belongs rau cov qauv L1₂. Cov qauv no muaj lub sijhawm sib nqus tsawg vim yog kev sib koom ua ke ntawm nickel atoms nrog aluminium / titanium atoms, yog li nws tsis ua rau ferromagnetism.
Nyob rau hauv lub ncov tshaj -hnub nyoog lub xeev, qhov ntim feem ntawm Ni₃Al thiab Ni₃Ti theem yog kwv yees li 5%–8% ntawm tag nrho cov microstructure. Qhov qis ntim feem ntau txhais tau hais tias cov theem ntxiv tsis tuaj yeem hloov pauv paramagnetic xwm ntawm -theem matrix. Raws li qhov tshwm sim, cov laus Monel K500 tswj cov khoom sib nqus tsis muaj zog, tsis muaj qhov sib txawv ntawm nws cov tshuaj -annealed xeev.
3. Kev cuam tshuam ntawm kev kho cua sov thiab kev ua haujlwm txias ntawm kev ua haujlwm sib nqus
Kev daws teeb meem -Annealed State: Tom qab cov tshuaj annealing ntawm 980-1040℃thiab quenching, lub alloy lub microstructure yog ib tug uniform -phase solid tov, nrog sib nqus susceptibility ntawm chav tsev kub feem ntau nyob rau hauv ntau yam ntawm1.0 × 10⁻⁵ rau 2.0 × 10⁻⁵ cm³ / g(ib yam paramagnetic ntau yam).
Aged State: Kev laus ntawm 480-510℃rau 4-6 teev txhawb cov nag lossis daus ntawm cov theem ntxiv, tab sis sib nqus nqus tau tsuas yog nce me ntsis rau2.5 × 10⁻⁵ rau 3.0 × 10⁻⁵ cm³ / g, tseem tshuav nyob rau hauv paramagnetic qeb.
Txias-Lub Xeev Ua Haujlwm: Kev ua haujlwm txias (piv txwv li, txias dov, kos duab txias) qhia txog kev tsis sib haum xeeb thiab cov lattice distortions rau hauv cov hlau, uas tuaj yeem ua rau me ntsis ua rau muaj kev cuam tshuam sib nqus los ntawm kev cuam tshuam cov phab ntsa txav. Txawm li cas los xij, txawm tias ua haujlwm txias txias (txo 50%), qhov sib nqus ntawm Monel K500 tsis tshaj.4.0 × 10⁻⁵ cm³/g, thiab nws tseem tsis pom muaj zog ferromagnetism.
4. Qhov kub thiab txias nyob ntawm cov khoom sib nqus
Saum chav kub: Raws li qhov kub thiab txias, lub thermal txav ntawm atoms intensifies, ntxiv cuam tshuam cov kev sib nqus ntawm cov sij hawm sib nqus. Qhov no ua rau kom maj mam txo qis hauv kev sib nqus, thiab qhov xwm txheej paramagnetic ua kom pom ntau dua.
Tsawg kub (qis dua 100 K): Nyob rau ntawm qhov kub thiab txias, thermal motion tsis muaj zog, thiab lub sij hawm sib nqus ntawm nickel atoms hauv matrix zoo li ua raws li ib feem ntawm sab nraud magnetic teb. Qhov no ua rau Monel K500 hloov pauv ntawm paramagnetic rauheev weakly ferromagnetic, tab sis qhov sib nqus attraction tseem qis dua li ntawm cov hlau ferromagnetic xws li carbon hlau lossis npib tsib xee ntshiab.
5. Tswv yim Engineering tseem ceeb
Nws yog haum rau siv nyob rau hauvmagnetic shielding systems, precision instrumentation, thiab marine khoomqhov twg muaj zog sib nqus cuam tshuam yuav tsum zam.
Tsis zoo li ferromagnetic alloys, Monel K500 tsis suav cov nqi sib nqus thaum lub sijhawm ua haujlwm, tiv thaiv cov teeb meem xws li kev sib nqus ntawm cov hlau khib nyiab, uas yog qhov tseem ceeb rau cov cuab yeej ua haujlwm hauv ib puag ncig abrasive.
Hauv cov ntsiab lus, Monel K500 yog atsis muaj zog hlau nplaum (paramagnetic) alloynyob rau hauv cov kev pabcuam ib txwm muaj, thiab nws cov khoom sib nqus tsis cuam tshuam los ntawm kev kho cua sov lossis kev ua haujlwm txias mus rau qib uas yuav hloov nws qhov tseem ceeb sib nqus kev faib tawm.
