{"id":32978,"date":"2019-10-31T21:50:04","date_gmt":"2019-10-31T18:50:04","guid":{"rendered":"https:\/\/prohoster.info\/blog\/razrabotana-3d-pechat-metallami-s-razresheniem-250-nm\/"},"modified":"2019-10-31T21:50:04","modified_gmt":"2019-10-31T18:50:04","slug":"razrabotana-3d-pechat-metallami-s-razresheniem-250-nm","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/razrabotana-3d-pechat-metallami-s-razresheniem-250-nm","title":{"rendered":"A fost dezvoltat\u0103 imprimarea 3D cu metale cu o rezolu\u021bie de 250 nm","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Utilizarea imprim\u0103rii 3D nu mai surprinde pe nimeni. Obiectele pot fi imprimate acas\u0103 \u0219i la birou, at\u00e2t din metal, c\u00e2t \u0219i din plastic. R\u0103m\u00e2ne doar s\u0103 reducem rezolu\u021bia duzelor \u0219i s\u0103 cre\u0219tem diversitatea materialelor de baz\u0103. \u0218i \u00een fiecare dintre aceste direc\u021bii r\u0103m\u00e2ne de f\u0103cut foarte, foarte mult.<\/p>\n

\"A<\/p>\n

O nou\u0103 realizare \u00een perfec\u021bionarea imprim\u0103rii 3D au anun\u021bat<\/a><\/noindex> cercet\u0103torii sub conducerea cercet\u0103torilor de la Institutul Federal Elve\u021bian de Tehnologie din Zurich (ETH Zurich). Ace\u0219tia au prezentat o nou\u0103 tehnologie promi\u021b\u0103toare pentru imprimarea metalelor \u00een microobiecte cu o rezolu\u021bie foarte mare \u2013 p\u00e2n\u0103 la 250 nm. \u00cen prezent, imprimarea 3D a microobiectelor din metale se realizeaz\u0103 cu cerneale fabricate special. Acestea sunt nanoparticule de metal suspendate \u00eentr-un lichid. Rezolu\u021bia acestor imprimante este \u00een micrometri, iar imprimarea se finalizeaz\u0103 printr-un tratament termic obligatoriu pentru fixarea modelului. \u00cen aceast\u0103 etap\u0103 final\u0103, apar numeroase defecte, incluz\u00e2nd o porozitate redus\u0103 \u0219i contaminare cu substan\u021be organice (solven\u021bi). Ce propun elve\u021bienii?<\/p>\n

\"A
\n<\/center><\/p>\n

Cercet\u0103torii din Zurich au \u00eenlocuit suspensia metalic\u0103 prin imprimarea direct\u0103 a metalelor. Mai exact, prin ioni metalici. A fost propus un design al capului de imprimare cu doi a\u0219a-numi\u021bi anode consumabile. De ce cu doi? A\u0219a e mai bine! Se poate imprima un microobiect metalic alternativ fie cu un metal, fie cu altul, sau chiar simultan cu ambele, cre\u00e2nd efectiv un aliaj cu propor\u021bia dorit\u0103 de unul \u0219i altul material. Principiul imprim\u0103rii 3D propus este c\u0103, sub tensiune mare aplicat\u0103 anodului, ionii de metal sunt desprinsi \u0219i zboar\u0103 spre substrat, unde se a\u0219az\u0103 \u0219i se transform\u0103 \u00een metalul de baz\u0103. Pentru ca acest proces s\u0103 func\u021bioneze, substratul este acoperit cu un strat de solvent, \u00een care au loc reac\u021bii chimice redox. Astfel, imprimarea se realizeaz\u0103 imediat din metal curat \u0219i nu necesit\u0103 un tratament termic ulterior.<\/p>\n

\r\n \"Reda\u021bi\r\n
<\/div>\r\n <\/div><\/center><\/p>\n

Exist\u0103 numeroase utiliz\u0103ri pentru astfel de tehnologii. Dar primele care ne vin \u00een minte sunt microelectronic\u0103 \u0219i crearea metamaterialelor cu propriet\u0103\u021bi neobi\u0219nuite. Tip\u0103rirea cu o astfel de precizie va ajuta la crearea de conexiuni foarte sub\u021biri \u0219i chiar la utilizarea materialelor organice \u00een electronic\u0103. Vorbind despre metamateriale, combina\u021bia de metale poate conduce la apari\u021bia materialelor cu propriet\u0103\u021bi mecanice interesante, de exemplu, care sunt simultan flexibile \u0219i rezistente.<\/p>\n

<\/p>\n

<\/center><\/p>\n

\t\t\t\t


\n\t\t\t\t\t\t\t\t<\/center>
Sursa: 3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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