Re sebelisa li-cookies ho ntlafatsa boiphihlelo ba hau.Ka ho tsoela pele ho bala sebaka sena sa marang-rang, u lumellana le tšebeliso ea rona ea li-cookies.Boitsebiso bo bong.
Sengoliloeng sa morao-rao se phatlalalitsoeng koranteng ea Additive Manufacturing Letters, bafuputsi ba bua ka tšebeliso ea sephatsa sa tšepe e entsoeng ka lik'hemik'hale bakeng sa ho lelefatsa bophelo ba phofo tlhahisong ea tlatsetso.
Patlisiso: Ho Eketsa Bophelo ba Powder ho Tlhahiso e Kenyellelitsoeng: Chemical Etching ea Stainless Steel Spatter.Mokitlane oa setšoantšo: MarinaGrigorivna/Shutterstock.com
Metal Laser Powder Bed Fusion (LPBF) Splash particles (LPBF) Splash particles e hlahisoa ke marotholi a qhibilihisitsoeng a ntšitsoeng letamong le entsoeng ka ho qhibilihisoa kapa likaroloana tsa phofo tse futhumetseng ho ea haufi kapa ka holim'a sebaka se qhibilihisang ha li feta ka har'a lebone la laser.
Ho sa tsotellehe tshebediso ya tikoloho inert, reactivity tšepe phahameng haufi le mocheso oa eona oa ho qhibiliha khothalletsa oxidation.Le hoja spatter likaroloana ejected nakong LPBF qhibiliha bonyane ka bokhutšoane holim'a metsi, diffusion ea lintho tse feto-fetohang holim'a ka etsahala hore ebe ho etsahala, 'me lintho tsena tse nang le kamano e phahameng bakeng sa oksijene hlahisa likarolo tse teteaneng tsa oxide.
Kaha khatello e sa fellang ea oksijene ho LPBF hangata e phahame ho feta ea atomization ea khase, monyetla oa ho tlama oksijene oa eketseha.
Stainless stainless le nickel-based alloy spatters li tsejoa ho oxidize ka potlako, ho etsa lihlekehleke ho fihlela ho limithara tse 'maloa ka botenya.Ho phaella moo, litšepe tse sa hloekang le li-alloys tse thehiloeng ho nickel, tse kang tse hlahisang li-spatters tsa mofuta oa sehlekehlekeng, ke lisebelisoa tse ngata tse atisang ho etsoa ka LPBF,' me ho sebelisa mokhoa ona ho feta ho tloaelehileng ho feta LPBF ho bontša hore LPBF ea lik'hemik'hale e tloaelehile ka tsela e tloaelehileng ea lik'hemik'hale ho LPBF ka mokhoa o ts'oanelang oa ho senya.
(a) Setšoantšo sa SEM sa li-stainless steel spatter particles, (b) mokhoa oa liteko oa thermal chemical etching, (c) LPBF treatment ea deoxidized spatter particles.Mokitlane oa setšoantšo: Murray, J. W, et al, Additive Manufacturing Letters
Phuputsong ena, bangoli ba ile ba sebelisa mokhoa o mocha oa ho hloekisa lik'hemik'hale ho tlosa li-oxide ho tloha holim'a li-oxidized stainless steel splash powder.
Sehlopha se bontšitse mokhoa oa ho tlosa li-oxides ka likarolong tsa lik'hemik'hale tse lekanang le tsa li-nPAT tšepe.
Bafuputsi ba ile ba sheba mocheso hammoho le li-etchants tse peli tse fapaneng tsa tšepe e sa hloekang.Ka mor'a ho hlahloba ka boholo bo lekanang, lipina tse le 'ngoe tsa LPBF li ile tsa bōptjoa ka ho sebelisa phofo e tšoanang le ea moroetsana, li-splash powders, le li-splash powders tse entsoeng ka katleho.
Motho ka mong LPBF mesaletsa e hlahisoang ho tswa ho spatter, etch spatter, le pristine phofo.
Sebaka sa oxide se koahetsoeng ka 316L phofo e sa hloekang ea splash e fokotsehile ka karolo ea 10, ho tloha ho 7% ho ea ho 0.7% ka mor'a hore reagent ea Ralph e futhumale ho 65 ° C ka ho hlapa metsi ka hora ea 1. Ho etsa 'mapa oa sebaka se seholo, lintlha tsa EDX li bontšitse ho fokotseha ha maemo a oksijene ho tloha 13.5% ho ea ho 4.5%.
Etched spatter e na le lesela le ka tlaase la oxide slag holim'a pina ha e bapisoa le spatter.Ho phaella moo, lik'hemik'hale tsa phofshoana tsa phofo li eketsa ho tšeloa ha phofo tseleng.
Ho pholletsa le mefuta eohle ea boholo ba 45-63 µm sieve, likaroloana tse setseng tsa agglomerated ka har'a li-powders tsa spatter tse tsitsitsoeng le tse sa tsitsang li hlalosa hore na ke hobane'ng ha palo ea trace ea li-powders tse entsoeng le tse fafalitsoeng li tšoana, ha melumo ea phofo ea pele e batla e le kholoanyane ka 50%.
Etched spatter e na le seaparo se tlaase sa oxide slag holim'a pina ha se bapisoa le spatter.
Schematic e bontšang melemo ea phekolo ea LPBF ha ho tlosoa lik'hemik'hale ho tloha phofo ea splash ka mekhoa ea tšepe e sa hloekang.Ho koloba ka mokhoa o babatsehang ho finyelloa ka ho felisa li-oxides.Mokitlane oa setšoantšo: Murray, J. W, et al, Additive Manufacturing Letters
Ka kakaretso, thuto ena e sebelisitse mokhoa oa ho kopanya lik'hemik'hale ho tsosolosa lik'hemik'hale tse nang le oxidized stainless steel spatter powders ka ho qoelisoa ka har'a reagent ea Ralph, tharollo ea ferric chloride le cupric chloride ka hydrochloric acid.
Bangoli ba lumela hore etching ea lik'hemik'hale e na le monyetla oa ho ntlafatsoa le ho sebelisoa ka tekanyo e pharaletseng ho nchafatsa likaroloana tse ngata tse sebelisitsoeng hape tsa spatter kapa phofo ea LPBF, kahoo e eketsa boleng ba thepa e theko e boima e thehiloeng phofo.
Murray, JW, Speidel, A., Spierings, A. et al. Ho eketsa bophelo ba phofo ka tlhahiso ea li-additive: lik'hemik'hale tsa lik'hemik'hale tsa spatter ea tšepe e sa hloekang.Additive Manufacturing Letters 100057 (2022) https://www.sciencedirect.com/science/article/pii/S200057
Boitlhotlhollo: Maikutlo a hlahisitsoeng mona ke a mongoli ka maemo a bona mme ha se hakaalo hore a emele maikutlo a AZoM.com Limited T/A AZoNetwork, monga le mosebeletsi oa sebaka sena sa marang-rang.Boikatoloso bona ke karolo ea lipehelo le lipehelo tsa tšebeliso ea sebaka sena sa marang-rang.
Surbhi Jain ke sengoli se ikemetseng sa tekheniki se lulang Delhi, India.O na le Ph.D.O fumane PhD ea Fisiks ho tsoa Univesithing ea Delhi mme a kenya letsoho mesebetsing e mengata ea mahlale, setso le lipapali.Semelo sa hae sa thuto ke lipatlisisong tsa mahlale a thepa, a ipabola ka nts'etsopele ea lisebelisoa tsa optical le li-sensor.O na le boiphihlelo bo pharaletseng ba ho ngola litaba, ho hlophisa le ho etsa lipatlisiso tsa pampiri ea 7, tlhahlobo ea li-project, le lipampiri tsa lipatlisiso tsa 2. Lipatente tsa Maindia tse ipapisitseng le mosebetsi oa hae oa ho etsa lipatlisiso.O rata ho bala, ho ngola, ho etsa lipatlisiso le theknoloji, o rata ho pheha, ho bapala lipapali, ho lema jareteng le lipapali.
Jainism, Subi.(24 May 2022).Mokhoa o mocha oa ho kenya lik'hemik'hale o tlosa li-oxide ho tloha ho oxidised stainless stainless splash powder.AZOM.E khutlisitsoe July 21, 2022 ho tloha https://www.azom.com/news.aspx?newsID=59143.
Jainism, Subi."Mokhoa o mocha oa ho kenya lik'hemik'hale oa ho tlosa li-oxide ho phofo ea spatter ea tšepe e sa hloekang e nang le oxidized".AZOM.July 21, 2022..
Jainism, Subi. "Mokhoa o mocha oa ho kenya lik'hemik'hale oa ho tlosa li-oxide ho tloha ho oxidized stainless steel spatter powder" .AZOM.https://www.azom.com/news.aspx?newsID=59143.(Accessed 21 July 2022).
Bojainism, Subi.2022.Mokhoa o mocha oa ho kenya lik'hemik'hale oa ho tlosa li-oxide ho tloha ho oxidized stainless steel splash powder.AZoM, e fihletsoeng ka July 21, 2022, https://www.azom.com/news.aspx?newsID=59143.
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Corrosion ke ho senyeha ha motsoako ka lebaka la ho pepesehela tikoloho.Mekhoa e fapaneng e sebelisoa ho thibela ho senyeha ha li-alloys tsa tšepe tse pepesehileng moeeng kapa maemo a mang a mabe.
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