Lub Luag Haujlwm Tshiab ntawm Dawb Corundum hauv Kev Hloov Kho Tshuab Kho Mob
Tam sim no, nws yuav tsis tawg txawm tias poob los xij—qhov zais cia nyob rau hauv lub txheej 'sapphire dawb' no. "Lub "sapphire dawb" uas nws hais txog yogdawb corundumsiv rau hauv kev lag luam hlau polishing. Thaum cov txhuas oxide siv lead ua no, nrog Mohs hardness ntawm 9.0 thiab tshuaj purity ntawm 99%, nkag mus rau hauv kev kho mob, kev hloov pauv ntsiag to hauv cov ntaub ntawv kho mob tau pib.
1. Los ntawm Cov Log Sib Tsoo Lag Luam mus rau Tib Neeg Cov Pob Qij Txha: Kev Hloov Pauv Thoob Plaws Tebchaws hauv Kev Tshawb Fawb Txog Khoom Siv
Tej zaum koj yuav xav paub tias cov khoom siv txhuam uas siv thaum chiv thawj los txiav hlau tau los ua qhov khoom siv tshiab ntawm kev kho mob li cas. Hais yooj yim xwb, lub hauv paus tseem ceeb ntawm kev siv tshuab kho mob yog "biomimeticism" - nrhiav cov khoom siv uas tuaj yeem sib xyaw nrog lub cev tib neeg thiab tiv taus kev siv ntau xyoo.Dawb corundum, ntawm qhov tod tes, muaj "cov qauv ruaj khov":
Nws qhov hardness sib piv nrog covpob zeb diamond, thiab nws txoj kev tiv thaiv kev hnav ntau dua peb zaug ntawm cov pob qij txha hlau ib txwm muaj.
Nws cov tshuaj lom neeg tsis muaj zog heev, txhais tau tias nws tsis lwj, xeb, lossis ua rau lub cev tsis lees txais.
Nws qhov chaw zoo li daim iav ua rau nws nyuaj rau cov kab mob sib txuas, txo qhov kev pheej hmoo ntawm kev kis kab mob tom qab phais.
Thaum ntxov xyoo 2018, ib pab pawg kho mob hauv Shanghai tau pib tshawb nrhiav kev sivdawb corundum coatedcov pob qij txha. Ib tug xib fwb seev cev uas tau hloov lub duav tag nrho rov qab los rau ntawm theem rau lub hlis tom qab phais. "Kuv cov pob qij txha hlau tau siv los ua rau kuv mob heev uas txhua kauj ruam zoo li iav tawg. Tam sim no, kuv yuav luag tsis nco qab tias lawv nyob ntawd thaum kuv seev cev." Tam sim no, lub neej ntawm cov nodawb corundum-ceramiccov pob qij txha sib xyaw tau dhau 25 xyoo, yuav luag ob npaug ntawm cov ntaub ntawv ib txwm muaj.
II. Tus "Tus Saib Xyuas Tsis Pom" ntawm lub Taub Hau Scalpel
Kev taug kev kho mob ntawm cov pob zeb dawb corundum tau pib nrog nws txoj kev hloov pauv loj heev ntawm cov cuab yeej kho mob. Hauv lub rooj cob qhia tsim khoom siv kho mob, Tus Thawj Coj Kev Ua Haujlwm Li tau taw tes rau ib kab ntawm cov forceps phais ci ntsa iab thiab piav qhia tias, "Tom qab txhuam cov cuab yeej stainless hlau nroghmoov av dawb corundum, qhov roughness ntawm qhov chaw raug txo kom tsawg dua 0.01 microns—du dua ib feem kaum txhiab ntawm qhov tuab ntawm cov plaub hau tib neeg.” Qhov ntug txiav du heev no ua rau kev txiav phais du zoo li riam kub hla butter, txo cov nqaij puas tsuaj los ntawm 30% thiab ua kom tus neeg mob kho sai dua.
Ib qho kev siv uas hloov pauv ntau dua yog hauv kev kho hniav. Ib txwm muaj, thaum siv cov pob zeb diamond abrasive burs rau kev sib tsoo hniav, qhov kub uas tsim los ntawm kev sib txhuam zaus siab tuaj yeem ua rau cov hniav puas tsuaj. Txawm li cas los xij, qhov cuab yeej ua kom ntse ntawmdawb corundum(tsis tu ncua tsim cov npoo tshiab thaum siv) ua kom ntseeg tau tias lub bur tseem ntse tas li. Cov ntaub ntawv kho mob los ntawm tsev kho mob hniav hauv Beijing qhia tau hais tias thaum kho cov hauv paus hniav siv cov corundum dawb, qhov kub ntawm cov hniav nce tsuas yog 2 ° C, qis dua qhov kev nyab xeeb thoob ntiaj teb ntawm 5.5 ° C.
III. Cov Txheej Txheem Cog Qoob Loo: Muab Cov Qoob Loo Dag Ua Ib Lub "Pob Zeb Diamond Armor"
Kev siv cov corundum dawb hauv kev kho mob uas muaj tswv yim tshaj plaws yog nws lub peev xwm los muab cov kabmob cuav rau "lub neej thib ob." Siv cov thev naus laus zis plasma spraying, cov hmoov av dawb corundum raug yaj-sprayed rau ntawm qhov chaw sib koom ua ke ntawm titanium alloy ntawm qhov kub siab, tsim cov txheej tiv thaiv ntom ntom 10-20 microns tuab. Lub tswv yim ntawm cov qauv no nyob hauv:
Cov txheej sab nraud tawv tiv taus kev sib txhuam txhua hnub.
Lub hauv paus sab hauv uas tawv ncauj nqus tau cov kev cuam tshuam uas tsis tau xav txog.
Cov qauv microporous txhawb nqa kev loj hlob ntawm cov hlwb pob txha nyob ib puag ncig.
Kev ua qauv qhia hauv chaw kuaj mob German tau qhia tias tom qab 5 lab lub voj voog taug kev, qhov hnav ntawm lub hauv caug prosthesis coated nrog dawb corundum tsuas yog 1/8 ntawm cov titanium ntshiab. kuv lub teb chaws tau suav nrog cov thev naus laus zis no hauv nws qhov kev pab cuam "Green Channel for Innovative Medical Devices" txij li xyoo 2024. Cov pob qij txha dawb corundum uas tsim tawm hauv tebchaws yog 40% pheej yig dua li cov khoom xa tuaj, pab tau ntau pua txhiab tus neeg mob uas muaj kab mob pob txha.
IV. Dawb Corundum "High-Tech" hauv Tsev Kho Mob Yav Tom Ntej
Kev Kho Mob Nyob rau hauv kev hloov pauv thev naus laus zis, dawb corundum tab tom qhib cov ciam teb tshiab:
Nano-scalekev txhuam hniav dawb corundum cov neeg sawv cev siv rau hauv kev tsim cov chips sequencing gene, ua rau kev kuaj pom tseeb dua los ntawm 99% mus rau 99.99%, ua rau kev kuaj mob qog noj ntshav thaum ntxov.
Cov pob txha caj qaum cuav uas luam tawm 3D uas muaj cov pob txha dawb corundum txhawb nqa muab ob npaug ntawm lub zog compressive ntawm cov pob txha ntuj, muab kev cia siab rau cov neeg mob qog nqaij hlav.
Cov txheej txheem biosensor siv cov khoom rwb thaiv tsev ntawm cov corundum dawb kom ua tiav kev sib kis xoom-cuam tshuam ntawm lub hlwb-lub khoos phis tawj interface teeb liab.
Ib pab pawg tshawb fawb hauv Shanghai tau tsim cov ntsia hlau pob txha dawb corundum uas lwj tau—uas thaum xub thawj muab kev txhawb nqa ruaj khov thiab maj mam tso tawm cov txhuas ions uas txhawb kev loj hlob thaum pob txha kho. "Yav tom ntej, kev phais pob txha tawg yuav tshem tawm qhov xav tau kev phais thib ob los tshem tawm cov ntsia hlau," Dr. Wang, tus thawj coj ntawm qhov project, hais thaum nthuav qhia cov ntaub ntawv sim los ntawm rabbit tibias: tom qab yim lub lis piam, qhov ntim ntawm cov ntsia hlau txo qis 60%, thaum qhov ceev ntawm cov pob txha tshiab tsim yog ob npaug ntawm pawg tswj.