Sisebenzisa iikuki ukuphucula amava akho.Ngokuqhubeka nokukhangela le ndawo, uyavumelana nokusebenzisa kwethu iikuki.Iinkcukacha ezongezelelweyo.
Kwinqaku lakutshanje elipapashwe kwiphephancwadi i-Additive Manufacturing Letters, abaphandi baxoxa ngenkqubo yokunyibilika kwe-laser ye-composites yobhedu esekelwe kwi-316L yensimbi engenasici.
Uphando: I-Synthesis ye-316L ye-stainless steel-copper composites nge-laser melting.Umfanekiso wekhredithi: I-Pedal kwisitokhwe / Shutterstock.com
Nangona ukuhanjiswa kobushushu ngaphakathi kwesiqina esilinganayo kusabiwa, ubushushu bunokuhamba ngobunzima obuqinileyo ecaleni kwendlela yokumelana okuncinci.Kwii-radiators ze-foam zetsimbi, kucetyiswa ukuba kusetyenziswe i-anisotropy ye-thermal conductivity kunye nokunyanzeliswa kokunyusa izinga lokushisa lobushushu.
Ukongezelela, i-anisotropic conduction thermal conduction ilindeleke ukuba incede ukunciphisa ilahleko ye-parasitic ebangelwa yi-axial conduction kwi-compact heat exchangers.Iindlela ezahlukeneyo zisetyenzisiwe ukutshintsha i-thermal conductivity ye-alloys kunye nesinyithi.Akukho nanye kwezi ndlela ezifanelekileyo ukunyusa izicwangciso zokulawula ulwalathiso lokuhamba kobushushu kumacandelo esinyithi.
I-Metal Matrix Composites (MMC) iveliswa kumgubo ocoliweyo webhola kusetyenziswa i-laser yokunyibilika kwibhedi engumgubo (LPBF) ubuchwepheshe.Indlela entsha ye-LPBF exutyiweyo isandula kucetywa ukwenza iialloyi ze-ODS 304 SS ngokwenza i-doping yttrium oxide precursors ibe ngumgubo we-304 SS phambi koxinaniso lwelaser usebenzisa iteknoloji ye-inkjet ye-piezoelectric.Inzuzo yale ndlela yikhono lokukhetha ukulungelelanisa izinto eziphathekayo kwiindawo ezahlukeneyo zomgubo, okuvumela ukuba ulawule izinto eziphathekayo ngaphakathi komthamo osebenzayo wesixhobo.
Umelo olucwangcisiweyo lwendlela yebhedi eshushu (a) emva kokufudumeza kunye (b) nokuguqulwa kwe-inki.Ikhredithi yomfanekiso: Murray, JW et al.Iileta ngokuVelisa okoNgezelelweyo.
Kolu phononongo, ababhali basebenzisa i-Cu inkjet inki ukubonisa indlela yokunyibilika kwe-laser yokuvelisa i-metal matrix composites kunye ne-thermal conductivity engcono kune-316L yensimbi engenasici.Ukulinganisa indlela yokudibanisa ibhedi ye-inkjet-powder exutyiweyo, umaleko wensimbi engenastainless umgubo wenziwa ngee-inki ze-copper precursor kwaye i-reservoir entsha isetyenziselwe ukulawula amanqanaba e-oksijini ngexesha lokusetyenzwa kwelaser.
Iqela lenze i-composites ye-316L yensimbi engenasici ngobhedu isebenzisa inki ye-inkjet yobhedu kwindawo yokulinganisa i-laser alloy kwibhedi engumgubo.Ukulungiswa kwee-reactors zemichiza kusetyenziswa i-inkjet entsha ye-inkjet kunye ne-LPBF yobuchule obuthatha ithuba lokuqhuba i-thermal conduction ukunciphisa ubukhulu kunye nobunzima be-reactor.Ithuba lokudala izinto ezidibeneyo usebenzisa inki ye-inkjet ibonisiwe.
Abaphandi bagxininise ekukhetheni ii-Cu inki precursors kunye nenkqubo yokwenziwa kweemveliso zovavanyo oluhlanganisiweyo ukufumanisa ubuninzi bezinto eziphathekayo, ubuncinci, ukwakheka, kunye nokusabalalisa kwe-thermal.Ii-ink ezimbini zomgqatswa zikhethwe ngokusekelwe kuzinzo lwe-oxidation, i-additives ephantsi okanye engekho, ukuhambelana ne-inkjet printheads, kunye nentsalela encinci emva kokuguqulwa.
Ii-inki zokuqala zeCufAMP zisebenzisa ifomati yobhedu (Cuf) njengetyuwa yobhedu.IVinyltrimethylcopper(II) i-hexafluoroacetylacetonate (Cu(hfac)VTMS) sesinye isandulela se-inki.Uvavanyo lokulinga lwenziwe ukuze kubonwe ukuba ukomiswa kunye nokubola kwe-ink ngokufudumala kwe-inki kubangela ukungcoliseka ngakumbi kobhedu ngenxa yokugqithiswa kweemveliso zeekhemikhali xa kuthelekiswa nokomisa okuqhelekileyo kunye nokubola kwe-thermal.
Ukusebenzisa zombini iindlela, ii-microcoupons ezimbini zenziwe kunye ne-microstructure yazo xa kuthelekiswa nokumisela umphumo wendlela yokutshintsha.Kumthwalo we-500 gf kunye nexesha lokubamba i-15 s, i-Vickers microhardness (HV) yalinganiswa kwinqanaba elinqamlezayo lommandla wokudibanisa weesampuli ezimbini.
Isicwangciso sokuseta uvavanyo kunye namanyathelo enkqubo aphinda-phindwayo ukwenza i-316L SS-Cu iisampulu ezihlanganisiweyo ezenziwe kusetyenziswa indlela yebhedi eshushu.Ikhredithi yomfanekiso: Murray, JW et al.Iileta ngokuVelisa okoNgezelelweyo.
Kwafunyaniswa ukuba i-thermal conductivity ye-composite yi-187% ephezulu kuneye-316L yensimbi engenasici, kwaye i-microhardness i-39% ephantsi.Uphononongo lweMicrostructural lubonise ukuba ukunciphisa ukuqhekeka kwe-interfacial kunokuphucula ukuhanjiswa kwe-thermal kunye neempawu zomatshini we-composites.Ukuhamba kokushisa okuhamba phambili ngaphakathi kwe-heat exchanger, kuyimfuneko ukuba ukhethe ukunyusa i-thermal conductivity ye-316L yensimbi engenasici.I-composite ine-conductivity esebenzayo ye-thermal ye-41.0 W / mK, i-2.9 amaxesha e-316L yensimbi engenasici, kunye ne-39% yokunciphisa ubunzima.
Xa kuthelekiswa ne-forged kunye ne-annealed 316L yensimbi engenasici, i-microhardness yesampulu kwinqanaba elifudumeleyo laliyi-123 ± 59 HV, eyi-39% ephantsi.I-porosity ye-composite yokugqibela yayiyi-12%, ehambelana nobukho be-cavities kunye nokuqhekeka kwi-interface phakathi kwezigaba ze-SS kunye ne-Cu.
Kwiisampulu emva kokufudumeza kunye nomgangatho wokufudumeza, ubulukhuni obuncinci bamacandelo anqamlezayo ommandla wokudityaniswa kwamiselwa njenge-110 ± 61 HV kunye ne-123 ± 59 HV, ngokulandelelanayo, eyi-45% kunye ne-39% engaphantsi kwe-200 HV ye-forged-annealed. 316L intsimbi engenasici.Ngenxa yomehluko omkhulu kwiqondo lokushisa elinyibilikayo leCu kunye ne-316L yensimbi engenasici, malunga ne-315 ° C, ii-cracks kwii-composites ezenziweyo zenziwe ngenxa ye-fluidization cracking ebangelwa yi-fluidization ye-Cu.
Umfanekiso we-BSE (phezulu ngasekhohlo) kunye nemephu yezinto (Fe, Cu, O) emva kokufudumeza isampuli, efunyenwe ngohlalutyo lwe-WDS.Ikhredithi yomfanekiso: Murray, JW et al.Iileta ngokuVelisa okoNgezelelweyo.
Ukuqukumbela, olu pho nonongo lubonisa indlela entsha yokudala i-316L SS-Cu i-composites ene-conductivity engcono ye-thermal kune-316L SS isebenzisa inki yobhedu efafaziweyo.I-composite yenziwe ngokufaka i-inki kwibhokisi yeglavu kwaye iguqulelwe kwi-copper, emva koko yongeza umgubo wensimbi engenasici phezu kwayo, emva koko udibanise kwaye uphilise kwi-laser welder.
Iziphumo zokuqala zibonisa ukuba i-inki ye-methanol esekelwe kwi-Cuf-AMP inokunciphisa i-copper ecocekileyo ngaphandle kokwenza i-copper oxide kwindawo efana nenkqubo ye-LPBF.Indlela yokulala eshushu yokufaka kunye nokuguqula i-inki yenza i-microstructures kunye ne-voids embalwa kunye nokungcola kuneenkqubo eziqhelekileyo zokufudumeza emva kokufudumeza.
Ababhali bayaqaphela ukuba izifundo ezizayo ziya kuhlolisisa iindlela zokunciphisa ubungakanani bengqolowa kunye nokuphucula ukunyibilika kunye nokuxuba izigaba ze-SS kunye ne-Cu, kunye neempawu zomatshini ze-composites.
Murray JW, Speidel A., Spierings A. et al.I-Synthesis ye-316L i-stainless steel-copper composites nge-laser melting.Iphepha leNgcaciso yoMveliso eyoNgezelelweyo 100058 (2022).https://www.sciencedirect.com/science/article/pii/S2772369022000329
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USurbhi Jain ngumbhali wetekhnoloji ozimeleyo ozinze eDelhi, eIndiya.UnePh.D.Ubambe i-PhD kwiFiziksi evela kwiYunivesithi yaseDelhi kwaye uthathe inxaxheba kwizinto ezininzi zesayensi, inkcubeko kunye nezemidlalo.Imvelaphi yakhe yemfundo ikuphando lwezenzululwazi ngezinto ezikhethekileyo kuphuhliso lwezixhobo zamehlo kunye nezivamvo.Unamava amaninzi ekubhalweni komxholo, ukuhlela, ukuhlalutya idatha yovavanyo kunye nokulawulwa kweprojekthi, kwaye upapashe amanqaku ophando e-7 kwiijenali ze-Scopus indexed kwaye ufake iipatent ze-2 zaseNdiya ngokusekelwe kumsebenzi wakhe wophando.Uyakuthanda ukufunda, ukubhala, uphando kunye neteknoloji kwaye uyakonwabela ukupheka, ukudlala, ukwenza igadi kunye nemidlalo.
UbuJainism, uSurbhi.(ngoMeyi 25, 2022).Ukunyibilika kweLaser kuvumela ukuveliswa kwentsimbi eyomeleleyo engenasici kunye neyobhedu.AZ.Ibuyiselwe ngoDisemba 25, 2022 ukusuka https://www.azom.com/news.aspx?newsID=59155.
UbuJainism, uSurbhi."Ukunyibilika kweLaser kunceda ukuveliswa kwentsimbi eyomeleleyo kunye neembumba zobhedu."AZ.NgoDisemba 25, 2022.NgoDisemba 25, 2022.
UbuJainism, uSurbhi."Ukunyibilika kweLaser kunceda ukuveliswa kwentsimbi eyomeleleyo kunye neembumba zobhedu."AZ.https://www.azom.com/news.aspx?newsID=59155.(Ukusukela nge-25 kaDisemba 2022).
UbuJainism, uSurbhi.2022. Ukuveliswa kweengxube zensimbi ezingenasici eziqinisiweyo / zethusi nge-laser melting.I-AZoM, ifunyenwe nge-25 kaDisemba 2022, https://www.azom.com/news.aspx?newsID=59155.
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