Peb siv cov ncuav qab zib los txhim kho koj cov kev paub dhau los.Los ntawm kev txuas ntxiv mus rau qhov chaw no koj pom zoo rau peb siv cov ncuav qab zib.Ntau cov ntaub ntawv.
Nyob rau hauv ib tsab xov xwm tsis ntev los no luam tawm nyob rau hauv phau ntawv journal Additive Manufacturing Letters, cov kws tshawb fawb tham txog kev siv hluav taws xob ntawm cov tshuaj etched stainless hlau spatter rau txuas cov hmoov hmoov hauv kev tsim khoom ntxiv.
Kev tshawb fawb: Extending Powder Life in Additive Manufacturing: Chemical Etching of Stainless Steel Spatter.Image Credit: MarinaGrigorivna/Shutterstock.com
Hlau Laser Powder Bed Fusion (LPBF) Splash particles yog tsim los ntawm molten droplets raug tshem tawm los ntawm lub pas dej ua ke los yog hmoov hais rhuab mus rau ze los yog siab tshaj qhov melting point thaum lawv dhau los ntawm lub laser beam.
Txawm hais tias kev siv ib puag ncig tsis zoo, cov hlau muaj qhov ua haujlwm siab nyob ze nws qhov kub thiab txias yuav txhawb oxidation.Txawm hais tias cov khoom tawg tau tawm thaum lub sij hawm LPBF yaj tsawg kawg yog luv luv ntawm qhov chaw, qhov sib txawv ntawm cov ntsiab lus tsis haum rau saum npoo yuav tshwm sim, thiab cov ntsiab lus uas muaj affinity siab rau oxygen tsim tuab oxide txheej.
Txij li thaum lub siab ib nrab ntawm cov pa hauv LPBF feem ntau yog siab dua li hauv cov pa atomization, qhov muaj peev xwm ntawm kev khi nrog oxygen yog nce.
Stainless hlau thiab npib tsib xee-raws li alloy spatters paub oxidize sai, tsim cov Islands tuaj mus txog ob peb meters nyob rau hauv thickness. Tsis tas li ntawd, stainless steels thiab npib tsib xee-raws li alloys, xws li cov uas tsim cov kob-hom oxide spatters, yog ntau machined cov ntaub ntawv nyob rau hauv LPBF, thiab siv txoj kev no rau ntau LPBF hlau spatters rau remonstrate txoj kev.
(a) SEM duab ntawm stainless hlau spatter hais, (b) sim txoj kev ntawm thermal chemical etching, (c) LPBF kev kho mob ntawm deoxidized spatter particles.Image credit: Murray, J. W, et al, Additive Manufacturing Letters
Hauv txoj kev tshawb no, cov kws sau ntawv siv cov txheej txheem tshuaj etching tshiab los tshem tawm cov oxides los ntawm qhov chaw ntawm oxidized stainless hlau txaws hmoov. Hlau tawg nyob ib ncig ntawm thiab hauv qab oxide Islands tuaj ntawm cov hmoov yog siv los ua cov txheej txheem tseem ceeb rau kev tshem tawm oxide, uas tso cai rau kev tawm tsam ntau dua oxide tshem tawm.Qhov txaws, etch thiab nkauj xwb hmoov.
Pab neeg no tau qhia yuav ua li cas tshem tawm cov oxides ntawm stainless hlau spatter hais, tshwj xeeb tshaj yog cov uas tau raug rho tawm siv cov txheej txheem tshuaj los ua Si- thiab Mn-nplua nuj oxide Islands tuaj rau ntawm cov hmoov av.316L ntawm spatter tau sau los ntawm cov hmoov txaj ntawm LPBF prints thiab chemically etched los ntawm immersion.Tom qab tshuaj xyuas tag nrho cov particles mus rau hauv ib qho kev sib txuas ntawm stainless hlau thiab LPF. hlau.
Cov kws tshawb fawb tau saib qhov kub thiab txias thiab ob qhov sib txawv stainless hlau etchants.Tom qab kev tshuaj ntsuam rau tib qhov loj me, LPBF ib qho lem tau tsim los ntawm kev siv cov hmoov zoo nkauj, txaws hmoov, thiab ua kom zoo etched txaws hmoov.
Tus kheej LPBF cov cim tsim los ntawm spatter, etch spatter, thiab pristine hmoov.Cov duab loj loj qhia tau tias cov txheej txheem oxide uas muaj nyob rau ntawm cov kab sib txuas tau raug tshem tawm ntawm qhov etched sputtered khiav.Cov hmoov qub pom tau tias qee cov oxides tseem nyob.Image credit: Murray, J. W, et al, Additive Manufacturing
Oxide cheeb tsam kev pab them nqi ntawm 316L stainless hlau txaws hmoov poob los ntawm ib qho tseem ceeb ntawm 10, los ntawm 7% mus rau 0.7% tom qab Ralph's reagent tau rhuab mus rau 65 ° C hauv dej da dej rau 1 xuab moos.Mapping thaj tsam loj, EDX cov ntaub ntawv pom tias txo qis hauv cov pa oxygen los ntawm 13.5% mus rau 4.5%.
Etched spatter muaj qis dua oxide slag txheej rau ntawm qhov chaw taug qab piv rau spatter.Ntxiv mus, tshuaj etching ntawm cov hmoov tsub kom cov assimilation ntawm cov hmoov rau ntawm txoj kev.Chemical etching muaj peev xwm los txhim kho cov reusability thiab durability ntawm spatter los yog loj-siv hmoov ua los ntawm dav siv thiab corrosion-resistant stainless hlau hmoov.
Thoob plaws tag nrho 45-63 µm sieve loj ntau yam, qhov seem agglomerated hais nyob rau hauv cov etched thiab unetched spatter hmoov piav qhia vim li cas cov kab ntim ntawm cov etched thiab spattered hmoov zoo sib xws, thaum lub ntim ntawm cov hmoov qub yog kwv yees li 50% loj dua.Agglomerated los yog satellite-forming hmoov.
Etched spatter muaj qis dua oxide slag txheej rau ntawm qhov chaw taug qab piv rau spatter.Thaum cov oxides raug tshem tawm, cov hmoov nplej semi-bound thiab liab qab qhia cov pov thawj ntawm kev khi zoo dua ntawm cov oxides txo qis, uas yog vim muaj kev ntub dej zoo dua.
Schematic qhia cov txiaj ntsig ntawm LPBF kev kho mob thaum tshuaj tshem tawm oxides los ntawm cov hmoov txaws hauv cov tshuab stainless hlau.Kev ntub dej zoo yog ua tiav los ntawm kev tshem tawm oxides.Image credit: Murray, J. W, et al, Additive Manufacturing Letters
Hauv cov ntsiab lus, txoj kev tshawb fawb no tau siv cov txheej txheem tshuaj etching los kho cov tshuaj oxidized stainless hlau spatter hmoov los ntawm immersion nyob rau hauv Ralph's reagent, ib tug tov ntawm ferric chloride thiab cupric chloride nyob rau hauv hydrochloric acid.
Cov kws sau ntawv ntseeg hais tias cov tshuaj etching muaj peev xwm los txhim kho thiab siv rau ntawm qhov dav dav kom rov ua dua ntau cov khoom siv rov ua dua tshiab los yog LPBF hmoov, yog li ua rau tus nqi ntawm cov khoom siv hmoov kim.
Murray.
Disclaimer: Cov kev xav tau hais tawm ntawm no yog cov neeg sau ntawv hauv lawv tus kheej lub peev xwm thiab tsis tas yuav sawv cev rau cov kev xav ntawm AZoM.com Limited T / A AZoNetwork, tus tswv thiab tus neeg teb xov tooj ntawm lub vev xaib no.
Surbhi Jain yog tus kws sau ntawv ywj pheej raws li hauv Delhi, India.Nws muaj Ph.D. Tau txais PhD hauv Physics los ntawm University of Delhi thiab koom nrog ntau yam kev tshawb fawb, kab lis kev cai thiab kev ua kis las.Nws keeb kwm kev kawm yog nyob rau hauv cov ntaub ntawv tshawb fawb, tshwj xeeb hauv kev txhim kho cov khoom siv kho qhov muag thiab cov sensors.She muaj kev paub ntau yam hauv kev tshawb fawb cov ntaub ntawv thiab kev kho, luam tawm cov ntaub ntawv thiab kho cov ntaub ntawv. Cov ntawv xov xwm thiab tau foob 2 Indian patents raws li nws txoj haujlwm tshawb fawb.Passionate txog kev nyeem ntawv, sau ntawv, tshawb fawb thiab thev naus laus zis, nws nyiam ua noj, ua yeeb yam, ua vaj thiab ua kis las.
Jainism, Subi.(24 Tsib Hlis 2022).Tshiab etching txoj kev tshem tawm oxides los ntawm oxidised stainless hlau txaws hmoov.AZOM.Retrieved Lub Xya hli ntuj 21, 2022 los ntawm https://www.azom.com/news.aspx?newsID=59143.
Jainism, Subi. "Tshiab tshuaj etching txoj kev tshem tawm oxides los ntawm oxidized stainless hlau spatter hmoov".
Jainism, Subi "Tshuaj etching txoj kev los tshem tawm oxides ntawm oxidized stainless hlau spatter hmoov".
Jainism, Subi.2022.AZoM, nkag mus rau Lub Xya Hli 21, 2022, https://www.azom.com/news.aspx?newsID=59143.
Ntawm Cov Khoom Siv Siab Tshaj Plaws hauv Lub Rau Hli 2022, AZoM tau tham nrog Ben Melrose ntawm International Syalons txog cov khoom lag luam siab heev, Kev Lag Luam 4.0, thiab kev thawb mus rau xoom xoom.
Ntawm Advanced Materials, AZoM tau tham nrog General Graphene's Vig Sherrill txog lub neej yav tom ntej ntawm graphene thiab yuav ua li cas lawv cov khoom siv tshiab yuav txo cov nqi los qhib lub ntiaj teb tshiab ntawm kev siv yav tom ntej.
Hauv kev xam phaj no, AZoM tham nrog Levicron Thawj Tswj Hwm Dr. Ralf Dupont txog lub peev xwm ntawm tus tshiab (U) ASD-H25 lub cev muaj zog spindle rau kev lag luam semiconductor.
Tshawb nrhiav OTT Parsivel², lub ntsuas hluav taws xob laser uas tuaj yeem siv los ntsuas txhua hom nag lossis daus.
Environics muaj cov txheej txheem permeation ntawm tus kheej rau ib leeg lossis ntau qhov kev siv ib leeg.
MiniFlash FPA Vision Autosampler los ntawm Grabner Instruments yog 12-txoj haujlwm autosampler.Nws yog ib qho khoom siv automation tsim los siv nrog MINIFLASH FP Vision Analyzer.
Tsab ntawv xov xwm no muab qhov kawg ntawm lub neej kev soj ntsuam ntawm cov roj teeb lithium-ion, nrog rau kev tsom mus rau kev rov ua dua cov roj teeb lithium-ion ntau zuj zus los ua kom muaj kev ruaj ntseg thiab ncig mus rau kev siv roj teeb thiab rov siv dua.
Corrosion yog qhov degradation ntawm ib qho alloy vim raug rau ib puag ncig.Ntau yam txuj ci yog siv los tiv thaiv corrosion deterioration ntawm hlau alloys raug atmospheric los yog lwm yam kev mob.
Vim qhov kev thov ntawm lub zog nce ntxiv, qhov kev thov rau cov roj nuclear kuj nce ntxiv, uas ua rau muaj kev nce ntxiv hauv kev thov rau kev tshuaj ntsuam xyuas tom qab irradiation (PIE) technology.