Basa Idzva reWhite Corundum muMedical Technology Revolution
Iye zvino, haizotsemuka kunyangwe ikadonhedzwa — chakavanzika chiri mune iyi 'white sapphire' nguo. “Safiya chena” yaaireva yaiva iyowhite corunduminoshandiswa muindasitiri yekukwenenzvera simbi. Apo iyi aluminium oxide crystal, ine kuoma kweMohs ye9.0 uye kuchena kwemakemikari ye99%, yakapinda munharaunda yezvokurapa, shanduko yakanyarara yezvokurapa yakatanga.
1. Kubva kuIndasitiri Kukuya Mavhiri kusvika kuHuman Joints: A Cross-Border Revolution mune Materials Science
Iwe unogona kunge uchinetseka kuti abrasive yakatanga kushandiswa kucheka simbi yave sei mudiwa mutsva wezvekurapa. Kutaura zviri nyore, chinangwa chikuru chehunyanzvi hwekurapa i "biomimeticism" - kutsvaga zvinhu zvinogona kubatana nemuviri wemunhu uye kumira makumi emakore ekupfeka uye kubvaruka.White corundum, kune rumwe rutivi, ine "yakasimba chimiro":
Kuoma kwayo kunokwikwidzana neiyo yediamond, uye kusapfeka kwayo kunodarika katatu kune echinyakare majoini esimbi.
Kemikari inertness yaro yakasimba zvakanyanya, zvichireva kuti haiori, kuita ngura, kana kukonzera kurambwa mumuviri wemunhu.
Chiratidzo chayo-sechionioni chinoita kuti zviome kuti mabhakitiriya abatanidze, zvichideredza njodzi yehutachiona hwepashure.
Kubva muna 2018, timu yekurapa muShanghai yakatanga kuongorora kushandiswa kwewhite corundum-coatedmajoini. Mumwe mudzidzisi wedhanzi akatsiva hudyu yakazara akadzokera pachikuva mwedzi mitanhatu mushure mekuvhiyiwa. “Majoini angu esimbi aindisunga zvakasimba zvokuti pose pandaifamba aiita sokuputsika kwegirazi. Parizvino, hupenyu hweizviwhite corundum-ceramicmajoini anoumbwa adarika makore 25, anodokupeta nekaviri ezvigadzirwa zvekare.
II. Iyo "Invisible Guardian" paScalpel's Tip
Rwendo rwekurapa rweWhite corundum rwakatanga nekushandurwa kwayo kukuru kwezvishandiso zvekurapa. Mumusangano wekugadzira michina yekurapa, Technical Director Li akanongedza mutsara wesimba rekuvhiya rinopenya ndokutsanangura, “Mushure mekupukuta midziyo yesimbi isina tsvina ine.white corundum micropowder, kushata kwepamusoro kunoderedzwa kusvika kumamicron asingasviki 0,01—kupfava kupfuura chikamu chimwe chezviuru gumi pakukora kwebvudzi romunhu.” Uku kutsetseka kwekucheka kwekucheka kunoita kuti kucheka kwekuvhiya kuve kwakatsetseka sebanga rinopisa kuburikidza nebhota, kuderedza kukuvadzwa kwetishu ne30% uye nekukurumidzira kupora kwemurwere.
Imwe yakatonyanya chimurenga Anwendung ari mazino. Sechinyakare, kana uchishandisa madhaimondi abrasive burs pakukuya mazino, kupisa kunoitwa nehigh-frequency friction kunogona kukuvadza pulp yemazino. Nekudaro, iyo yekuzvirodza pfuma yewhite corundum(inogara ichigadzira mipendero mitsva panguva yekushandiswa) inova nechokwadi chekuti bur rinoramba rakapinza. Data yekiriniki kubva kuchipatara chemeno yeBeijing inoratidza kuti panguva yekurapa midzi uchishandisa chena corundum burs, tembiricha yemeno yemazino inokwira ne2 ° C chete, ichidzika pasi pepasirese chengetedzo ye5.5 ° C.
III. Kudyara Coatings: Kupa Artificial Organs "Dhamondi Yezvombo"
Kunyanya kufungidzira kwekurapa kwewhite corundum kugona kwayo kupa nhengo dzekugadzira "hupenyu hwechipiri." Uchishandisa tekinoroji yekupfapfaidza yeplasma, chena corundum micropowder inonyunguduka-yakapfapfaidzwa pane titanium alloy joint surface pakupisa kwepamusoro, ichiita dense inodzivirira layer 10-20 microns gobvu. Hunyanzvi hwechimiro ichi huri mu:
Iyo yakaoma yekunze layer inopikisa kukweshana kwemazuva ese.
Iyo yakaoma yemukati base inobata zvisingatarisirwe zvinokonzeresa.
Iyo microporous chimiro inokurudzira mu-kukura kwemasero emapfupa akapoteredza.
Kufananidzwa murabhoritari yeGermany kwakaratidza kuti mushure memamiriyoni mashanu ekufamba, kupfeka kwebvi reprosthesis rakaputirwa nechena corundum kwaingova 1/8 chete yetitanium yakachena. nyika yangu yakabatanidza tekinoroji iyi muchirongwa chayo che "Green Channel for Innovative Medical Devices" kubvira 2024. Majoini ehudyu anogadzirwa mudzimba machena ane corundum ane 40% inodhura kupfuura zvigadzirwa zvinotengeswa kunze kwenyika, zvichibatsira mazana ezviuru zvevarwere vane zvirwere zvemapfupa.
IV. White Corundum "High-Tech" muKliniki yeRamangwana
Chiremba Pakati peshanduko yetekinoroji, chena corundum iri kuvhura miganhu mitsva:
Nano-scalewhite corundum polishing maajenti anoshandiswa mukugadzira machipisi ekuteedzera majini, kuwedzera kurongeka kwekuona kubva pa99% kusvika 99.99%, kufambisa kuongororwa kenza.
3D-yakadhindwa yeartificial vertebrae inosanganisira chena corundum yakasimbiswa skeleton inopa kaviri simba rekumanikidza remafupa echisikigo, zvichipa tariro kune varwere vepinal bundu.
Biosensor coatings inowedzera iyo insulating zvivakwa zvewhite corundum kuti iwane zero-kukanganisa kutapurirana kwehuropi-kombuta interface masaini.
Chikwata cheku Shanghai chekutsvagisa chakatogadzira biodegradable white corundum bone screws-izvo zvinotanga zvinopa tsigiro yakasimba uye zvishoma nezvishoma kuburitsa kukura-kusimudzira aluminium ion apo bhonzo rinopora. "Mune ramangwana, kuvhiyiwa kwekuputsika kunogona kubvisa kudiwa kwekuvhiyiwa kwechipiri kubvisa screw," akadaro Dr. Wang, mutungamiri wepurojekiti, paairatidza ruzivo rwekuedza kubva kune tsuro tibias: mushure memavhiki masere, screw volume yakaderera ne60%, nepo kuwanda kwepfupa rakangobva kuumbwa rakapetwa kaviri yeboka rinodzora.