{"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\/sl\/blog\/news\/razrabotana-3d-pechat-metallami-s-razresheniem-250-nm","title":{"rendered":"Razvili so 3D-tiskanje iz kovin z resolucijo 250 nm","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Uporaba 3D-tiska \u017ee nikogar ne presene\u010da. Predmete lahko tiskamo doma in na delu, tako iz kovine kot iz plastike. Zdaj je le \u0161e treba zmanj\u0161ati resolucijo delovanja \u0161ob in pove\u010dati raznolikost izhodnih materialov. Na vsakem od teh podro\u010dij nas \u0161e \u010daka ogromno dela.<\/p>\n

\"Razvili<\/p>\n

Z novim dose\u017ekom v izbolj\u0161anju 3D-tiska so se pohvalili<\/a><\/noindex> znanstveniki pod vodstvom raziskovalcev s \u0160vicarske federativne tehnolo\u0161ke \u0161ole v Z\u00fcrichu (ETH Zurich). Predstavili so novo perspektivno tehnologijo za tiskanje mikroobjektov iz kovin z zelo visoko resolucijo \u2013 do 250 nm. Danes se 3D-tisk mikroobjektov iz kovin izvaja s pomo\u017enimi \u010drnili. To so nanodelci kovine, name\u0161\u010deni v teko\u010dini v obliki suspenzije. Resolucija tovrstnih tiskalnikov dosega mikrometre, zaklju\u010dek tiska pa je obvezen \u017earjenje za utrjevanje modela. V tej zaklju\u010dni fazi se pojavijo \u0161tevilne pomanjkljivosti, med drugim nizka poroznost in onesna\u017eenje z organiko (topili). Kaj pa ponujajo \u0160vicarji?<\/p>\n

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

Znanstveniki iz Z\u00fcricha so namesto kovinske suspenzije uvedli tiskanje neposredno z kovinami. Natan\u010dneje, z ioni kovin. Predlagana je konstrukcija tiskalne glave z dvema tako imenovanima potro\u0161nima anodama. Zakaj z dvema? Tako je bolje! Mo\u017eno je tiskati kovinski mikroobjekt izmeni\u010dno bodisi z eno bodisi z drugo kovino ali celo z obema hkrati, tako da ustvarimo zlitino z \u017eelenim razmerjem enega in drugega materiala. Na\u010delo predlaganega 3D-tiska je v tem, da se pod visokim napetostnim pritiskom, ki je priklju\u010den na anodo, ioni kovin odtrgajo in letijo proti podlogi, kjer se usedejo in pretvorijo v izhodi\u0161\u010dno kovino. Da to deluje, je podloga prekrita s plastjo topila, v katerem potekajo oksidacijsko-redukcijske kemi\u010dne reakcije. Tako se tiskanje odvija s \u010distim kovinam in ne zahteva naknadnega \u017earjenja.<\/p>\n

\r\n \"Predvajaj\r\n
<\/div>\r\n <\/div><\/center><\/p>\n

Uporaba te tehnologije je \u0161iroka. Najprej pomislimo na mikroelektroniko ter na ustvarjanje metamaterialov z nenavadnimi lastnostmi. Tiska z tako natan\u010dnostjo lahko omogo\u010di ustvarjanje najbolj finih povezav in celo uporabo organskih materialov v elektroniki. \u010ce govorimo o metamaterialih, lahko kombinacije kovin privedejo do nastanka materialov z zanimivimi mehani\u010dnimi lastnostmi, na primer hkrati pro\u017enih in trdnih.<\/p>\n

<\/p>\n

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

\t\t\t\t


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

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