Qhov cuam tshuam ntawm cov khoom siv alloy hauv npib tsib xee-luj alloys
Cov ntsiab lus sib txawv hauv ib qho kev sib txawv tuaj yeem hloov pauv cov cuab yeej siv, corrosion tsis kam, thiab microstructure ntawm ib tug hlau. Thaum chromium, npib tsib xee, molybdenum, thiab hlau yuav yog thawj cov ntsiab lus sib xws, cov pa roj carbon, tooj liab, tooj liab, thiab leej faj kuj tseem muaj teebmeem. Nkag siab txog cov ntsiab lus no thiab lawv qhov cuam tshuam zoo thiab tsis zoo ntawm cov alloys tuaj yeem pab txiav txim siab rau qee cov alloys.
Npib tsib caug (ni)
Txhim kho qhov kub kub lub zog, tiv taus oxidation, nitrividing, carburization, thiab halogenation. Nws tseem muab cov metallurgical stability. Ntxiv ntawm cov ntsiab lus no txhim kho kom tsis txhob txo cov kua qaub thiab cov neeg ua haujlwm tsis kam tiv thaiv kev ntxhov siab.
Chromium (cr)
Kev sib cais nrog chromium txhim kho cov alloy lub zog tiv thaiv kom cov pa oxidation siab thiab sulfidation, nrog rau kev tiv thaiv kom dav dav. Xws oxidizing tshaj tawm muaj nitric acid thiab chromic acid. Ib qho ntxiv yog feem ntau nyob nruab nrab ntawm 15% thiab 30%, tab sis tuaj yeem yog siab li 50%.
Molybdenum (mo)
MUAM Ntxiv txhim kho cov alloy tiv thaiv tsis kam rau cov kua qaub tsis-oxidizing, hydrophoric acid (h3pofluoric acid (HF). Molybdenum kuj tau pom los txhim kho cov alloy lub qhov tsis kam mus rau sulfuric acid (H2so4) ntawm ntau qhov qis dua 60%. Molybdenum txhim kho cov alloy txoj kev tawm tsam rau pitting thiab crevice corrosion thiab imparts high-kub lub zog rau lub alloy.
Hlau (FE)
Cov ntsiab lus no txo tus nqi alloy, txhim kho cov alloy lub zog tiv taus rau cov carburization kub, thiab tswj cov kev nthuav dav thermian.
Tungsten (w)
Qhov khoom no, zoo li mo, txhim kho lub alloy tiv thaiv kom txo cov kua qaub thiab cov hauv paus nroog, thiab txhim kho kom muaj zog thiab ua kom muaj zog.
Carbon (c)
Degrades lub allloy cov corrosion tsis kam, tab sis txhim kho nws lub zog ntawm kev ntsuas kub.
Aluminium (AL)
Qhov sib ntxiv ntawm txhuas txhawb nqa kev tsim ntawm cov nplaum nruj txhuas aluminium oxide nplai ntawm ntug dej kub uas tiv thaiv oxidation, carburization, thiab chloride nres. Hauv kev sib xyaw nrog titanium, txhuas kuj txhawb cov hnub nyoog ua kom tawv nqaij tawv hauv qee cov alloys.
Titanium (ti)
Raws li tau hais los saum no, titanium txhawb cov hnub nyoog tawv, thiab, vim kev tsim ntawm chromium carbides tom qab kev kho kom sov, nws tseem txuas rau kev ua kom txo qis kom txo qis hauv kev txhim kho corrosion intergranular.
Tooj Liab (Cu)
Txhim kho kom tiv taus kom txo cov kua qaub. Alloys muaj 30% mus rau 40% tooj liab tau txais kev tiv thaiv zoo rau txhua qhov kev xav ntawm cov tsis yog hydrofluoric acid (HF). Yog tias tooj tooj liab ntxiv rau npib tsib xee-molybdenum-hlau alloys acid, thiab qee qhov kev pom zoo ntawm cov roj sulfuric acid tuaj yeem txhim kho.
Cobalt (CO)
Cobalt imparts tshwj xeeb muaj zog ntxiv dag zog rau kev kub-alloys. Cobalt kuj txhim kho qhov tsis kam ntawm Nickel alloys mus carburization thiab sulfation. Qhov no yog vim Co tau nce cov solubility ntawm c hauv ni-paus alloys thiab cobalt sulfide muaj ntau dua melting taw tes dua li noickel sulfide.
