Tantalumhlau - "metalphile" ntawm tib neeg lub cev
Cov ntaub ntawv hlau yog dav siv hauv cov tshuaj kho mob vim lawv qhov kev tsim nyog rau cov khoom siv kho tshuab thiab qaug zog, thiab tsim nyog rau kev cog qoob loo ntawm cov kabmob. Ntau yam khoom siv hlau xws li stainless hlau, titanium-based thiab cobalt-based alloys tau siv dav hauv kev kho mob thiab tau ua tiav qee yam kev kho mob.
Txawm li cas los xij, tib neeg ib puag ncig nyuaj tuaj yeem ua rau cov khoom siv corrosion thiab ua rau tso tawm cov tshuaj lom, yog li txo qis biocompatibility ntawm cov khoom siv hlau. Tsis tas li ntawd, qhov elastic modulus ntawm qee cov ntaub ntawv hlau txawv dhau los ntawm tib neeg cov pob txha cov ntaub so ntswg, uas tsis tsim nyog rau kev loj hlob thiab kho cov pob txha tshiab thiab tuaj yeem yooj yim ua rau cov pob txha tawg. Cov xwm txheej tsis zoo no txwv tsis pub siv cov khoom siv hlau ua cov ntaub ntawv biomedical.
Tantalum metal Tantalum kuj yog cov khoom siv hlau uas muaj cov khoom siv zoo heev thiab tiv thaiv kev qaug zog. Yog li ntawd, nws yog dav siv nyob rau hauv kev kho mob daim ntawv thov, tshwj xeeb tshaj yog nyob rau hauv lub teb ntawm orthopedics. Nws hloov cov ntaub so ntswg tib neeg los ua lub luag haujlwm ntawm kev thauj khoom thiab tau ua tiav cov txiaj ntsig tseem ceeb hauv kev kho mob.
Tantalum hlau cov ntaub ntawv muaj ntau qhov zoo dua li cov khoom siv hlau cov khoom siv dag siv dag zog rau lub zog, biocompatibility thiab stability nrog tib neeg cov ntaub so ntswg. Yog li ntawd, txoj kev loj hlob ntawm tantalum hlau nyob rau hauv cov kev kho mob teb muaj ntau lub zeem muag.
Tantalum khoom
1. Zoo corrosion kuj
Nyob rau hauv chav tsev kub, tantalum yuav tsis hnov mob nrog hydrochloric acid, concentrated nitric acid los yog txawm aqua regia, thiab zoo tib yam inorganic ntsev yuav tsis corrode nws.
2. Zoo biocompatibility
Tsis zoo li cov khoom siv hlau kho mob, cov ntaub so ntswg lom yuav loj hlob ntawm tantalum nyob rau lub sijhawm tom qab cog, ib yam li loj hlob ntawm cov pob txha. Yog li ntawd, tantalum tseem hu ua "metalphile"
3. Tsim nyog elastic modulus
Lub elastic modulus ntawm tantalum nrog ib tug tshwj xeeb pore qauv yog nruab nrab ntawm tib neeg cov pob txha pob txha thiab cortical pob txha, ua rau nws tshwj xeeb tshaj yog haum rau cov pob txha hloov, sib koom tes hloov thiab tib neeg cov ntaub so ntswg filling.