Nikolai Kakhidze, tus tub ntxhais kawm tiav ntawm Kws qhia ntawv ntawm Physics thiab Engineering, tau tawm tswv yim siv pob zeb diamond lossis aluminium oxide nanoparticles ua lwm txoj hauv kev kim scandium rau hardening aluminium alloys.Cov khoom siv tshiab yuav raug nqi 4 npaug tsawg dua qhov scandium-muaj analog nrog rau lub cev thiab cov khoom siv zoo sib xws.
Tam sim no, ntau lub tuam txhab tsim nkoj tab tom siv zog los hloov cov hlau hnyav nrog cov khoom siv lub teeb thiab ultra-light.Ntxiv rau qhov ua kom muaj peev xwm nqa tau, qhov no tuaj yeem siv tau zoo los txo cov roj noj, txo cov pa phem rau hauv cov huab cua thiab ua rau kom muaj kev txav ntawm lub nkoj thiab ua kom cov khoom thauj sai.Cov lag luam hauv kev thauj mus los thiab kev lag luam aerospace kuj nyiam cov ntaub ntawv tshiab.
Aluminium matrix composite cov ntaub ntawv hloov nrog scandium los ua ib qho kev hloov zoo.Txawm li cas los xij, vim yog tus nqi siab ntawm scandium, kev tshawb nrhiav nquag tab tom ua rau kev hloov kho pheej yig dua.Nikolai Kakhidze tau thov kom hloov scandium nrog pob zeb diamond lossis aluminium oxide nanoparticles.Nws txoj hauj lwm yuav yog los tsim ib txoj hauv kev rau kev qhia tseeb ntawm nanopowders rau hauv cov hlau yaj.
Thaum ncaj qha nkag mus rau hauv cov yaj, cov nanoparticles yog sib sau ua ke rau hauv agglomerates, oxidized, thiab tsis wetted, thiab lawv tsim pores nyob ib ncig ntawm lawv tus kheej.Yog li ntawd, pliaj impurities tau txais es tsis txhob hardening hais.Nyob rau hauv lub chaw soj nstuam ntawm high-zog thiab cov ntaub ntawv tshwj xeeb ntawm Tomsk State University, Sergey Vorozhtsov twb tau tsim scientific thiab thev naus laus zis mus kom ze rau dispersed hardening ntawm txhuas thiab magnesium uas ua kom paub tseeb hais tias qhov tseeb qhia txog refractory nanoparticles rau hauv yaj thiab tshem tawm cov teeb meem ntawm wettability thiab flotation. .
- Raws li kev txhim kho ntawm kuv cov npoj yaig, kuv qhov project npaj cov kev daws teeb meem hauv qab no: nanopowders yog de-agglomerated (ib npaug faib) hauv cov hmoov txhuas me me uas siv ntau yam kev ua haujlwm.Tom qab ntawd lub ligature yog synthesized los ntawm qhov sib tov uas yog txaus technologies thiab yooj yim rau kev lag luam siv nyob rau hauv ib tug industrial scale.Thaum lub ligature yog nkag mus rau hauv lub yaj, sab nraud teb tau ua tiav kom uniformly faib cov nanoparticles thiab ntxiv rau cov wettability.Kev taw qhia kom raug ntawm nanoparticles tuaj yeem txhim kho lub cev thiab lub zog ntawm cov khoom qub, - Nikolai Kakhidze piav qhia txog qhov tseem ceeb ntawm nws txoj haujlwm.
Nikolai Kakhidze npaj kom tau txais thawj qhov kev sim ntawm ligatures nrog nanoparticles rau lawv cov kev taw qhia tom ntej mus rau hauv cov yaj los ntawm qhov kawg ntawm 2020. Hauv 2021, nws tau npaj kom tau txais kev sim ua pov thawj thiab tiv thaiv cov cuab yeej kev txawj ntse.
Cov ntawv tshiab tshaj plaws ntawm cov ntaub ntawv teev cov qauv tshiab rau kev tshawb fawb rov ua dua, muab txoj hauv kev txhim khu kev qha rau…
HiLyte 3 cofounders (Jonathan Firorentini, Briac Barthes thiab David Lambelet) © Murielle Gerber / 2020 EPFL…
Max Planck lub koom haum rau Ornithology xov xwm tshaj tawm.Tuaj txog thaum ntxov hauv thaj chaw yug me nyuam yog qhov tseem ceeb…
Post lub sij hawm: Jan-13-2020