Tinoshandisa makuki kuti tiwedzere ruzivo rwenyu. Nekuramba muchitsvaga saiti ino unobvuma kushandisa kwedu makuki. Ruzivo rwakawanda.
Muchinyorwa chakabudiswa munguva pfupi yapfuura mujenari reAdditive Manufacturing Letters, vaongorori vanokurukura nezvekubatsira kwesimbi isina ngura yakagadzirwa nemakemikari pakuwedzera hupenyu hwehupfu mukugadzira zvinhu zvinowedzera.
Tsvagiridzo: Kuwedzera Hupenyu hweUpfu muKugadzira Zvinowedzerwa: Kucheka kweMakemikari kweSimbi Isina Kupwanya. Mufananidzo: MarinaGrigorivna/Shutterstock.com
Metal Laser Powder Bed Fusion (LPBF) Zvidimbu zvinoputika zvinogadzirwa nemadonhwe akanyungudutswa anoburitswa mudziva rakanyungudutswa kana zvidimbu zveupfu zvinopiswa kusvika pedyo kana pamusoro penzvimbo yekunyunguduka pazvinopfuura nepakati pemwaranzi yelaser.
Pasinei nekushandiswa kwenzvimbo isina chinhu, kushanda kwakanyanya kwesimbi pedyo nekupisa kwayo kwekunyunguduka kunokurudzira oxidation. Kunyangwe zvimedu zvinobuda panguva yeLPBF zvichinyunguduka kanenge kwenguva pfupi pamusoro, kupararira kwezvinhu zvinoshanduka pamusoro kunogona kuitika, uye zvinhu izvi zvine hukama hwakakura hweokisijeni zvinogadzira zvidimbu zveokisijeni zvakakora.
Sezvo kumanikidzwa kwechikamu cheokisijeni muLPBF kuchiwanzova kwakakwirira kupfuura muatomu yegesi, mukana wekubatana neokisijeni unowedzera.
Ma "stainless steel" ne "nickel-based alloy spatters" anozivikanwa nekukurumidzira kuoxidation, zvichiita kuti zvitsuwa zvisvike pakukora kwemamita akati wandei. Pamusoro pezvo, ma "stainless steel" ne "nickel-based alloys", akadai seaya anogadzira "island-type oxide spatters", zvinhu zvinowanzogadzirwa ne "machined" muLPBF, uye kushandisa nzira iyi kune ma "LPBF metal spatters" akajairika kuratidza kuti kuvandudzwa kwemakemikari kwakakosha kuPowder nenzira yakajairika.
(a) Mufananidzo weSEM wezvikamu zvesimbi isingatsvedzeri, (b) nzira yekuedza yekupisa makemikari, (c) LPBF kurapwa kwezvikamu zvezvikamu zvemvura zvakabviswa oxidized. Mufananidzo wakapihwa na: Murray, J. W, et al, Additive Manufacturing Letters
Muchidzidzo ichi, vanyori vakashandisa nzira itsva yekubvisa ma oxides pamusoro pema splash powders esimbi isina tsvina yakasanganiswa. Kunyungudika kwesimbi kutenderedza nepasi pema oxides paupfu kunoshandiswa senzira huru yekubvisa ma oxides, izvo zvinobvumira kubviswa kwe oxide zvine simba. Ma splash, etch uye virgin powders akaseferwa kusvika pahukuru hwehupfu hwakafanana hwekugadzirisa LPBF.
Chikwata chakaratidza nzira yekubvisa ma oxide kubva muzvikamu zvesimbi isingatsvedzeri, kunyanya izvo zvakabviswa uchishandisa matekiniki emakemikari kugadzira zvitsuwa zveSi- neMn-rich oxide pamusoro pehupfu. 316L ye spratter yakatorwa kubva pahupfu hwemaprints eLPBF uye yakachekwa nemakemikari nekunyudzwa. Mushure mekuongorora zvikamu zvese kusvika pahukuru hwakafanana, LPBF inozvigadzira kuita imwe chete ne spratter yakagadziriswa uye simbi isingatsvedzeri yakajeka.
Vaongorori vakatarisa tembiricha pamwe chete nezvishandiso zviviri zvakasiyana zvesimbi isina ngura. Mushure mekuongororwa kusvika pahukuru hwakaenzana, nzira dzeLPBF dzakagadzirwa nekushandisa hupfu hwakafanana, hupfu hwesplash, uye hupfu hwesplash hwakachekwa zvakanaka.
Zvisaririra zveLPBF zvega zvega zvinogadzirwa kubva muspatter, etch spatter, uye pristine powder. Mufananidzo wekuwedzera kukuru unoratidza kuti oxide layer iri panzira yakapwanyika inobviswa panzira yakapwanyika. Upfu hwepakutanga hwakaratidza kuti mamwe maoxide achiripo. Mufananidzo wakapihwa na: Murray, J. W, et al, Additive Manufacturing Letters
Kufukidzwa kwenzvimbo ye oxide pa 316L stainless steel splash powder kwakaderera ne10, kubva pa7% kusvika pa0.7% mushure mekunge reagent yaRalph yadziiswa kusvika 65 °C mubhavhu remvura kweawa imwe chete. Pakutarisa nzvimbo yakakura, data reEDX rakaratidza kudzikira kwemazinga e oxygen kubva pa13.5% kusvika pa4.5%.
Kupwanya kwemvura kwakachekwa kune ganda rakadzikira pamusoro penzira kana tichienzanisa nekupwanya kwemvura. Pamusoro pezvo, kupwanya kwemvura nemakemikari kunowedzera kunyungudika kwemvura iri panzira. Kupwanya kwemvura nemakemikari kune mukana wekuvandudza kushandiswazve uye kugara kwenguva refu kwemvura kana kuti hupfu hunoshandiswa zvakanyanya hunobva muhupfu hwesimbi isingatsvi hunoshandiswa zvakanyanya uye hunodzivirira ngura.
Munzvimbo yese yehukuru hwesefa ye45-63 µm, zvidimbu zvakasara zvakaungana muupfu hwakachekwa neusina kuchekwa zvinotsanangura kuti nei vhoriyamu shoma dzeupfu hwakachekwa neuhwakachekwa dzakafanana, nepo vhoriyamu dzeupfu hwepakutanga dzakakura ne50%. Upfu hwakaungana kana hunogadzira satellite hwakaonekwa huchikanganisa huwandu hwakawanda uye nokudaro vhoriyamu.
Chinoputika chine ganda rakatetepa rine ganda rakatetepa pamusoro penzira kana tichienzanisa nechinoputika. Kana ma oxide abviswa nemakemikari, hupfu hwakasungwa zvishoma uye husina chinhu hunoratidza humbowo hwekusunga ma oxide akaderedzwa zviri nani, izvo zvinokonzerwa nekunyorova kuri nani.
Chimiro chinoratidza mabhenefiti ekurapwa kweLPBF pakubvisa ma oxide kubva muupfu hwe splash mu steel systems. Kunyorova kwakanaka kunowanikwa nekubvisa ma oxide. Mufananidzo wakapihwa na: Murray, J. W, et al, Additive Manufacturing Letters
Muchidimbu, chidzidzo ichi chakashandisa nzira yekucheka makemikari kuti pavezve nemakemikari upfu hwesimbi isina tsvina hwakasanganiswa zvakanyanya nekunyudzwa muRalph's reagent, mhinduro yeferric chloride necupric chloride muhydrochloric acid. Zvakaonekwa kuti kunyudzwa muRalph etchant solution yakapiswa kweawa imwe chete kwakaita kuti pave nekudzikira kwenzvimbo yeoxide paupfu hwakapfapfaidzwa nekagumi.
Vanyori vanotenda kuti makemikari ekucheka anogona kuvandudzwa uye kushandiswa zvakanyanya kuvandudza zvidimbu zvakawanda zvemaspatter zvakashandiswazve kana LPBF powders, nokudaro zvichiwedzera kukosha kwezvinhu zvinodhura zvakagadzirwa nehupfu.
Murray, JW, Speidel, A., Spierings, A. nevamwe. Kuwedzera hupenyu hwehupfu mukugadzirwa kwekuwedzera: kucheka kwemakemikari kwesimbi isina ngura. Tsamba dzeKugadzira dzekuwedzera 100057 (2022). https://www.sciencedirect.com/science/article/pii/S2772369022000317
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Surbhi Jain munyori wezvehunyanzvi anoshanda ari ega ari kuDelhi, India. Ane dhigirii rePh.D. Akawana dhigirii rePhD muFizikisi kubva kuYunivhesiti yeDelhi uye akatora chikamu mune zvakawanda zvesainzi, tsika nemitambo. Ruzivo rwake rwedzidzo rwuri mukutsvaga zvinhu zvesainzi, kunyanya kugadzira zvishandiso zve optical uye sensors. Ane ruzivo rwakakura mukunyora zviri mukati, kugadzirisa, kuongorora data rekuyedza uye manejimendi yemapurojekiti, uye akaburitsa mapepa ekutsvagisa manomwe muScopus indexed journals uye akaisa mapatenti maviri eIndia zvichibva pabasa rake rekutsvagisa. Ane shungu nekuverenga, kunyora, kutsvagisa netekinoroji, anofarira kubika, kuita mitambo, kurima bindu nemitambo.
Jainism, Subi.(24 Chivabvu 2022). Nzira itsva yekucheka makemikari inobvisa ma oxide kubva muupfu hwesimbi isina tsvina yakasanganiswa ne oxidised. AZOM. Yakatorwa musi wa21 Chikunguru, 2022 kubva ku https://www.azom.com/news.aspx?newsID=59143.
ChiJainism, Subi. "Nzira itsva yekucheka makemikari yekubvisa ma oxide kubva muupfu hwesimbi isina tsvina yakasanganiswa". AZOM. Chikunguru 21, 2022..
ChiJainism, Subi. "Nzira itsva yekucheka makemikari yekubvisa ma oxide kubva muupfu hwesimbi isina tsvina yakasanganiswa". AZOM. https://www.azom.com/news.aspx?newsID=59143. (Yakasvikwa musi wa21 Chikunguru 2022).
Jainism, Subi.2022. Nzira itsva yekubvisa ma oxide kubva muupfu hwesimbi isina tsvina yakasanganiswa. AZoM, yakasvikwa musi wa21 Chikunguru, 2022, https://www.azom.com/news.aspx?newsID=59143.
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