KANTHAL AF ALOY 837 AFFOROHM ALCHROME Y FECAL

KANTHAL AF yog Ferritic Hlau-Chromium-Alloy Alloy (FeCral Alloy) rau kev siv ntawm qhov kub thiab txias txog 1300 ° F). Lub alloy yog tus cwj pwm los ntawm kev ua haujlwm oxidation zoo heev thiab zoo heev daim ntawv stability tshwm sim hauv lub neej ntev lub neej.

Kan-thal AF feem ntau yog siv hauv hluav taws xob cua sov cov ntsiab lus hauv kev ua kom sov thiab cov khoom siv hauv tsev.

Piv txwv li cov ntawv thov hauv cov khoom lag luam Mica ua kom sov rau cov khoom siv ua kom sov, hauv cov hlau tso cua sov kom sov, hauv cov hlau tso cua sov rau cov hlau tso cua sov, hauv kev tshem tawm cov hlau ntim cov cua sov Tso cua sov, hauv cov ntsiab lus porcupine rau cov phom huab cua kub, cov tshuab ziab khaub ncaws,.

Paub daws teeb nyob rau hauv txoj kev kawm tam sim no, txoj kev txhim kho tshuab ntawm kev lag luam frectral aloy afloy (4.6) ntawm 900 ° C thiab 1200 ° C yog teev. Isothermal thiab thermo-cyclic tau kuaj nrog sib txawv tag nrho cov sij hawm, cov nqi cua sov, thiab annealing kub tau ua. Oxidation sim nyob rau hauv huab cua thiab nitrogen roj tau nqa los ntawm thermogravimetric ntsuas. Lub microstructure yog tus cwj pwm los ntawm kev ntsuas hluav taws xob electron me me (SEM-EDX), etter Electron spectroscopy (AES), thiab tsom ion nqaj (FIB-EDX) tsom xam. Cov txiaj ntsig qhia tau hais tias kev nce qib ntawm corrosion siv qhov chaw ntawm cov cheeb tsam ntawm cov cheeb tsam nitridation cov cheeb tsam, uas txo cov kev ua si txhuas, uas txo qhov ua rau embrittlittlement thiab spallation. Cov txheej txheem ntawm kev tsim qauv Al-Nitride thiab Al-Oxide Scale kev loj hlob yog nyob ntawm anealing kub thiab cua sov. Nws tau pom tias nitridation ntawm cov txheej txheem feclo yog cov txheej txheem sai dua li oxidation hauv cov pa roj hlav hauv cov pa roj carbon monoxideus

Taw qhia FECRAL - Raws li alloys (KANTHAL ANT ®) yog paub zoo rau lawv cov oxidation zoo tshaj tawm ntawm cov kub. Cov cuab yeej zoo tshaj yog cuam tshuam nrog kev tsim ntawm thermodynamically ruaj khov alumina nplai rau saum npoo, uas tiv thaiv cov khoom tawm tsam oxidation ntxiv [1]. Txawm tias muaj cov khoom siv tsis zoo, cov tib yam ntawm cov khoom siv FECRAL - Ib qho ntawm cov laj thawj rau qhov no yog qhov ntsuas tsim lub caij, txhuas, tau noj nyob rau hauv Alloy Matrix uas yog rov ua dua tshiab thiab hloov kho ntawm cov alumina nplai. Yog tias cov seem seem yooj yim txo qis rau hauv cov nplai tseem ceeb, ua rau muaj kev tiv thaiv cov roj ntsha tsis tau los ntawm kev tsim cov khoom siv hluav taws xob sai sai thiab cov chromium-based oxides [3,4]. Nyob ntawm qhov chaw nyob ib puag ncig thiab permeability ntawm cov oxide ntawm qhov no tuaj yeem pab txhawb txuas ntxiv hauv theem hauv cov theem undesiring hauv cheeb tsam ntawm cov ntu ntu ntawm cov cheeb tsam subtesurface [5]. HAN thiab cov tub ntxhais hluas tau pom tias hauv Alumina nplai tsim Ni alloys, tshwj xeeb hauv kev caij tsheb kauj vab, tshwj xeeb hauv cov av thermal, tshwj xeeb hauv cov khoom siv kub uas muaj cov neeg muaj zog nitride zoo li al thiab ti [4]. Cov nplai chromium oxide yog paub tias yog nitrogen permeable, thiab cr2 n ua ib txheej uas yog ib txheej sub-teev lossis ib yam li daus los yog 8,9]. Cov nyhuv no tuaj yeem xav tau ntau rau hauv thermal cycling uas ua rau oxide teev cracking thiab txo nws cov hauj lwm ua tau zoo li ib tug cuam tshuam rau nitrogen [6]. Cov cwj pwm corrosion yog yog li kev sib tw los ntawm kev sib tw ntawm oxidation, uas ua rau muaj kev sib tw ntawm Aln Theem piv tau rau Alloy Matrix [9]. Thaum muab cov roj ntsha ua rau muaj kev kub ntxhov rau cov pa oxygen xws li H2O, oxidation yog qhov kev tiv thaiv oxygen xws li h2o lossis aluminen ntawm kev tiv thaiv oxygen xws li kev tiv thaiv oxygen xws li H2O lossis muaj kev tiv thaiv lawv kev nkag rau hauv Alloy Matrix. Tab sis, yog tias raug rau kev txo cov chaw (N2 + H2), thiab kev tiv thaiv kab ke tawg, uas muab txoj kev tiv thaiv kev sib txawv, uas yog cov kev tiv thaiv kab mob tsis sib haum xeeb, thiab tsim cov ALN TUB [9]. Cov kev tiv thaiv (4.6) cov huab cua nitrogen yog siv nyob rau hauv cov ntawv thov kev lag luam ntawm cov alloys alloys. Piv txwv li, tiv thaiv cua sov nyob rau hauv cov cua sov kev kho mob yog ib qho piv txwv ntawm cov txheej txheem txheej txheem ntawm cov alloys. Cov kws sau ntawv qhia tias tus lej oxidation ntawm cov alloys alloys yog qhov qeeb qeeb thaum annealing hauv cov huab cua nrog cov oxygen ib nrab pressures [11]. Lub hom phiaj ntawm txoj kev tshawb no yog los txiav txim siab seb puas muaj ib qho kev sib txawv ntawm cov roj ntsha (4.6)