U-Nikolai Kakhidze, umfundi oneziqu ze-Faculty of Physics and Engineering, uphakamise ukuthi kusetshenziswe ama-nanoparticles edayimane noma i-aluminium oxide njengenye i-scandium ebizayo yokwenza ukuqina kwama-alloys e-aluminium. Izinto ezintsha zizobiza izikhathi ezi-4 ngaphansi kwe-analog equkethe i-scandium enezakhiwo ezisondelene kakhulu zomzimba nezomshini.
Njengamanje, izinkampani eziningi ezakha imikhumbi zilwela ukushintsha insimbi esindayo ngezinto ezilula nezilula kakhulu. Ngaphezu kokwandisa umthamo wokuthwala, lokhu kungasetshenziswa ngokunenzuzo ukunciphisa ukusetshenziswa kukaphethiloli, ukunciphisa ukukhishwa okuyingozi emkhathini nokwandisa ukuhamba komkhumbi kanye nokusheshisa ukulethwa kwempahla. Amabhizinisi asezimbonini zezokuthutha kanye ne-aerospace nawo anentshisekelo ezintweni ezintsha.
Izinto ezihlanganisiwe ze-aluminium matrix eziguqulwe nge-scandium zaba indawo enhle. Kodwa-ke, ngenxa yezindleko eziphezulu ze-scandium, ukusesha okusebenzayo kuyaqhubeka ukuze kutholakale isilungisi esithengekayo. U-Nikolai Kakhidze uhlongoze ukuthi esikhundleni se-scandium kufakwe idayimane noma i-aluminium oxide nanoparticles. Umsebenzi wakhe kuzoba ukuthuthukisa indlela yokwethulwa kahle kwama-nanopowder abe yi-melt melt.
Lapho ifakwa ngokuqondile ekuncibilikeni, ama-nanoparticles ahlanganiswa abe ama-agglomerate, afakwe i-oxidized, futhi awamanziswanga, futhi enza izimbotshana ezizungezile. Ngenxa yalokho, kutholakala ukungcola okungafunwa esikhundleni sokuqina kwezinhlayiya. Elabhorethri yezinto ezinamandla kakhulu nezikhethekile eNyuvesi yaseTomsk State, uSergey Vorozhtsov usevele esungule izindlela zesayensi nezobuchwepheshe zokuhlakazeka kokuqina kwe-aluminium ne-magnesium okuqinisekisa ukwethulwa okulungile kwama-nanoparticles aphikisayo ekuncibilikeni futhi aqede izinkinga zokumanzisa nokuntanta. .
- Ngokusekelwe ekuthuthukisweni kozakwethu, iphrojekthi yami iphakamisa isisombululo esilandelayo: i-nanopowder i-de-agglomerated (isatshalaliswa ngokulinganayo) ku-powder aluminium enosayizi omncane usebenzisa imisebenzi eminingana yobuchwepheshe. Khona-ke i-ligature ihlanganiswa kusuka kule ngxube evumelana nobuchwepheshe futhi ilungele ukusetshenziswa ezimbonini esikalini sezimboni. Lapho i-ligature yethulwa ekuncibilikeni, amasimu angaphandle acutshungulwa ukuze asakaze ngokulinganayo ama-nanoparticles futhi akhulise ukumanzisa. Ukwethulwa okulungile kwama-nanoparticles kungathuthukisa izakhiwo ezingokomzimba nemishini ye-alloy yokuqala, - u-Nikolai Kakhidze uchaza ingqikithi yomsebenzi wakhe.
U-Nikolai Kakhidze uhlela ukuthola amaqoqo okuqala okuhlola ama-ligatures anama-nanoparticles ukuze angeniswe ekuncibilikeni kwawo kamuva ekupheleni kuka-2020. Ngo-2021, kuhlelwe ukuthola ukulingwa kwecala futhi kuvikelwe amalungelo empahla yengqondo.
Inguqulo yakamuva ye-database isetha izindinganiso ezintsha zocwaningo oluphindaphindekayo, ihlinzeka ngendlela ethembekile…
Abasunguli be-HiLyte 3 (uJonathan Firorentini, uBriac Barthes noDavid Lambelet)© Murielle Gerber / 2020 EPFL…
Ukukhishwa kwabezindaba kweMax Planck Institute for Ornithology. Ukufika kusenesikhathi endaweni yokuzalanisa kubalulekile...
Isikhathi sokuthumela: Jan-13-2020