Kanthal AF Alloy 837 Resistohm Alchrome y Fecral Alloy

Kanthal af is ferritic iron-chromini-aluminium alloy (fecral alloy) yekushandisa pakupisa kusvika ku1300 ° C (2370 ° F). Iyo Alloy inoonekwa neakanakisa oxidation kuramba uye yakanaka kwazvo fomu kugadzikana kukonzera hupenyu hwakareba hwelement.

Kan-thal af kazhinji inoshandiswa mune yemagetsi ekupisa zvinhu mumidziyo yeindasitiri uye zvishandiso zvepamba.

Muenzaniso wezvekushandisa muindasitiri wepasiridzo uri muzvikamu zvakavhurika Mimudziridzi zvakananga allement eairesi, mahombekombe ezvipfuyo, muzvinhu zvoguruko zvepfuti dzinopisa dzemhepo, radiators, dzinokanganisaoma.

Abstract mune Present Production, iyo Corrosism yemitambo yekushambadzira fecral Alloy (Kanthal Af) panguva yekuwedzera muNitrogen gasi (4.6) pa900 ° C uye 1200 ° C inyatsanangurwa. Isothermal uye thermo-cyclic miedzo ine zvakasiyana-siyana mwero mapoinzi, inopisa mitengo, uye tembiricha inosimbisa yakaitwa. Oxidation bvunzo mumhepo uye nitrogen gasi gasi yakaitwa neArmogravimetric kuongorora. Iyo microture inoonekwa neye Electron Equiroscopy (SEM-Edx), Auger Electron Spectroscopy (AES), uye yakatarisa ion Beam (FIB-EDX) Ongorora. Mhedzisiro yacho inoratidza kuti kufambira mberi kweuto kunoitika kuburikidza nekuumbwa kwenzvimbo dzekusimbisa dzisimbe, dzinoumbwa neAln chikamu, chinoderedza iyo aluminium basa uye inokonzera zvinyoronyoro uye kupokana. Maitiro eAl-nitride kuumbwa uye al-oxide yako kukura kukura kunoenderana nekutsamwisa tembiricha uye kupisa mwero. Yakawanikwa kuti nitridation yeiyo fecral alloy maitiro pane oxidation panguva yekuwedzera mune yeNitrogen gasi pasirese yekudzvinyirira uye inomiririra chikonzero chikuru chekushatisa kwehukama.

Nhanganyaya Fecral - Yakavakirwa Allys (Kanthal af Ichi chivakwa chakanakisa chine chekuita nekuumbwa kweiyo thermodynamically yakagadzikana alumina chiyero pamusoro, inodzivirira zvinhu zvinopesana nehodhi [1]. Pasinei nesimba repamusoro rinopesana nezvivakwa, hupenyu hwezvinhu zvozvikamu zvakagadzirwa kubva kuCecral - zvakavakirwa Alloys zvinogona kuve zvishoma kana zvikamu zvacho zvichiratidzwa zvinowanzoitika kupaza cycling kuimba yekupisa [2]. Chimwe chezvikonzero neizvi ndezvekuti chikero chinoumba chinhu, aluminium, chinodyiwa muAlloy Matrix mune iyo subsurface nharaunda nekuda kwekudzokororwa thermmo-kuvhunduka kweiyo alumina chiyero. Kana iyo yakasara aluminium yakarongedzwa kuderera kwepasi kutsoropodza, iyo Alloy haichazogadzirazve chiyero chekudzivirira, zvichikonzerwa nenjodzi yekupaza oxid Zvichienderana nemamiriro ekunze akapoterera uye fungidziro yemukati yemhando iyi inogona kufambisira mberi oxidation yemukati kana nitridation uye kuumbwa kweiyo disesired phazini mune subsurface dunhu [5]. Han nevadiki vakaratidza kuti muAlumina Screal fomu NAL AL ​​ALLOYS, NITENGELE PAMWE YEMAHARA ISHE ANELME ATHICATION YAKAITWA NDIMA YEMAHARA NITRION SHEMA SEAT NET [4]. Chromium oxide zviyero zvinozivikanwa kuve nitrogen inobvumirwa, uye cr2 n mafomu angangoita seyakayera-scuffer cayer kana seyakagadzirirwa mukati-8,9]. Izvi zvinogoneka zvinogona kutarisirwa kuve zvakanyanya pasi pemamiriro ekudyara emvura anotungamira kune oxide chiyero chinopaza uye kuderedza kushanda kwayo sechipinganidzo kuNitrogen [6]. Maitiro ekuora saka anotongwa nemakwikwi pakati pe oxidation, iyo inotungamira kuTheumina Yemukati Yemukati yeAln chikamu Paunenge uchifumura fecral allows kune hutsinye hwekupisa neokisijeni kana imwe okisijeni inobata, uye isingaenzaniswi yekushongedza tembiricha uye kupa kudzivirirwa kwekudziya uye kupa kudzivirirwa kubva kuuwandu hwavo mumatare. Asi, kana ikaratidzwa kuderedza mamiriro ekunze (N2 + H2), uye anodzivirira alumina chiyero chekupaza, chinopa nzira yekudzivirira Iyo yekudzivirira (4.6) nitrogen mamiriro ekunze inowanzoiswa mukushandisa maindasitiri ezve fecral alloys. Semuenzaniso, kudzivisa hiters munzvimbo dzekupfeka dzekurapa nemamiriro ekunze ekudzivirira eNitrogen muenzaniso wekushandiswa kwakapararira kweecrel alloys munzvimbo yakadai. Vanyori vanotaura kuti iyo oxidation mwero weiyo fecraly Alloys inokamanikidza zvishoma nezvishoma kana inosimbisa mumamiriro ekunze akaderera oksijeni ekumanikidza. Chinangwa chekudzidza chaive chekuziva kuti chinowedzera mu (99.996%) nitrogen (