Kanthal af Alloy 837 promahm alchrome y fecal alloy

I-Kanthal AF iyi-Ferritic Iron-Chromium-Aluminium Alloy (FECRAL ALLOY) yokusebenzisa amazinga okushisa aze afike ku-1300 ° C (2370 ° F). I-alloy ibonakala ngokumelana ne-oxidation enhle kakhulu futhi ukuqina kwefomu okuhle okuholela empilweni ye-letic yento.

I-KAN-Thal af imvamisa isetshenziswa ezintweni zokushisa kagesi ezintweni zezimboni nasemishini yasekhaya.

Isibonelo sezicelo embonini ye-applicance zisezintweni ezivulekile ze-mica zamabutho, izinhlayiya zezinwele, ngezindlela ezivuthiwe ze-ceramic amapuleti aphezulu, kumakhoyili ama-ceramic ama-feralic ama-hobs avuthayo. Ama-radiator, ama-heather we-convection, ezintweni ze-porcupine zezibhamu zomoya ezishisayo, ama-radiator, ama-tumble wome.

I-Abstract esifundweni samanje, inqubo yokugqwala ye-formial fecal alloy (Kanthal AF) ngesikhathi sokunxusa ku-nitrogen gas (4.6) ngo-900 ° C no-1200 ° C no-1200 ° C no-1200 ° C no-1200 ° C no-1200 ° C. Izivivinyo ze-ISORTERMAL ne-Thermo-cyclic ngezikhathi ezihlukile zokuvezwa, amanani okushisa, kanye namazinga okushisa anveling awenziwa. Ukuhlolwa kwe-oxidation emoyeni nasegesi ye-nitrogen kwenziwa ngokuhlaziywa kwe-thermogravimetric. I-MicroSCRUCUCURE ibonakala ngokuskena i-Electron Microscopy (SEM-EDX), i-Auger Electron Spectroscopy (AES), kanye ne-Ion Beam (FIB-EDX) Ukuhlaziywa. Imiphumela ikhombisa ukuthi ukuqhubeka kokugqwala kwenzeka ngokwakhiwa kwezifungo ze-nitridation zasendaweni, ezenzelwe izinhlayiya zesigaba ze-ALN, ezinciphisa umsebenzi we-aluminium futhi kubangele ukufezekiswa kanye nokuchitheka. Izinqubo zokwakheka kwe-al-nitride kanye nokukhula kwe-al-oxide ukukhula kuncike ekushiseni kokushisa nokushisa. Kwatholakala ukuthi i-nitridation ye-FECral Alloy inqubo esheshayo kune-oxidation ngesikhathi sokufaka igesi ye-nitrogen enomfutho ophansi we-oxygen ophansi futhi imele imbangela enkulu yokonakaliswa kwe-alloy.

Isingeniso FECRAL - I-Alloys esekwe ku-ALLOYS (KANTHAAL AF ®) yaziwa kahle ngokumelana nayo okuphezulu kwe-oxidation kumazinga okushisa aphakeme. Le mpahla enhle kakhulu ihlobene nokwakhiwa kwesikali esizinzile se-alumina ebusweni, esivikela impahla ngokumelene ne-oxidation [1]. Naphezu kwezindawo eziphikisanayo eziphakeme zokulwa, impilo yezakhi ezenziwe nge-FECRAL - I-Alloys esekwe Ingalinganiselwa uma izingxenye zivame ukuvezwa ngokuhamba ngebhayisikoshi okushisa ngaphansi kwamazinga okushisa aphakeme [2]. Enye yezizathu zalokhu ukuthi lesi silinganiso esenziwe into, i-aluminium, idliwa ku-matrix ye-alloy endaweni ebonakalayo ngenxa yokuqhekeka okuphindaphindwayo kwe-thermo-ukwethuka nokuguqulwa kwe-alumina scale. Uma okuqukethwe okusele kwe-aluminium kuncipha ngaphansi kokuhlushwa okubucayi, i-alloy ayisakwazi ukuguqula isimo esivikelayo, okuholela ekuxhumeni oxcalophic okuyisisekelo ekwakhekeni okukhulayo okukhula ngokushesha kwe-iron ne-3,4]. Kuya ngesimo esiseduze nasekuhlinzekeni kwe-survate oxides lokhu kungasiza ukuqhubeka nokusebenza nge-oxidation yangaphakathi noma i-nitridation kanye nokwakhiwa kwezigaba ezingafuneki esifundeni se-subsurraface. I-HAN neBouth bakhombisile ukuthi e-Alumina Scale yakha ama-NI CR Al Alloys, iphethini eyinkimbinkimbi ye-oxidation yangaphakathi ye-oxidation yangaphakathi kanye nama-alloys aqukethe amafomu aqinile we-nitride afana ne-Al ne-TI [4]. Isikali se-Chromium oxide saziwa ukuthi singama-nitrogen avumelekile, futhi amafomu we-CR2 N kungaba yisendlalelo esisezingeni eliphansi noma njenge-trecipita yangaphakathi [8,9]. Lo mphumela ungalindeleka ukuthi ube mkhulu ngaphansi kwezimo zokuhamba ngebhayisikile ezishisayo eziholela ekuqhekekeni kwe-oxide ukuqhekeka futhi kunciphise ukusebenza kwawo njengesithiyo ku-nitrogen [6]. Ukuziphatha kokuqina kulawulwa ngumncintiswano phakathi kwe-oxidation, okuholela ekwakhekeni / ukulungiswa kwe-alumina okuvikelayo, okuholela ekuchithekeni kwale ndawo ngenxa yokwandiswa okuphezulu kwe-ALL kuqhathaniswa ne-alloy matrix [9]. Lapho kudalulwa ama-folcal all kuya emazingeni okushisa aphezulu asemoyeni noma abanye abanikeli be-oxygen enjenge-H2O noma i-CO2, amafomu okuvuselela ama-oxygen, kanye ne-nitrogen emazingeni okushisa aphezulu futhi anikeze ukuvikeleka ekungeneni kwe-matrix yabo. Kepha, uma kuvezwa emkhathini wokunciphisa (N2 + H2), kanye nokuvikelwa okuvikela i-alumina, i-oxidation yendawo eqala ngokuvikela i-CR ne-FERICH Isimo sezulu esivikelayo (4.6) se-nitrogen sivame ukusetshenziswa ekusetshenzisweni kwezimboni ze-FECrald Alloys. Isibonelo, ukumelana nokuvikelwa kwama-heating e-Heat Treatment Fourface ngesimo somoya we-nitrogen okuvikelayo kuyisibonelo sohlelo lokusebenza olusakazekile lwe-FECrald Alloys endaweni enjalo. Ababhali babika ukuthi izinga le-oxidation le-Fecraral Alloys lihamba kancane lapho ligundana esimweni esiphansi se-Oxygen Oxygen [11]. Inhloso yocwaningo bekuwukuthi unqume ukuthi ngabe ukhipha (99.996%) i-nitrogen (4.6) igesi (iMesser®) i-O2 + H2O (i-AF) 10 I-ANTALUST