Titanium alloys thiab aluminium alloys yog ob feem ntau siv hlau cov ntaub ntawv uas ua lub luag haujlwm tseem ceeb hauv ntau yam lag luam, suav nrog kev lag luam, aerospace, thiab kev kho mob. Txawm li cas los xij, lawv pom qhov sib txawv tseem ceeb ntawm qhov ceev, lub zog, qhov taw tes melting, corrosion kuj, thiab kev ua haujlwm. Cov kev sib txawv no txiav txim siab lawv qhov tsim nyog rau kev siv sib txawv.
Qhov hnyav thiab hnyav
Titanium alloys muaj qhov ceev ntawm 4.54 g / cm³, thaum aluminium alloys muaj qhov ceev ntawm 2.7 g / cm³. Aluminium alloys, paub txog lawv lub teeb yuag, nrhiav kev siv dav hauv kev lag luam uas txo qhov hnyav yog qhov tseem ceeb, xws li tsheb, tsheb kauj vab, thiab kev tsim dav hlau. Txawm hais tias hnyav dua li aluminium alloys, titanium alloys tseem yog qhov kev xaiv zoo tshaj plaws hauv kev ua haujlwm siab xws li aerospace thiab cov cuab yeej kho mob vim lawv qhov hnyav.
Lub zog thiab Hardness
titanium alloys muaj zog thiab hardness piv rau aluminium alloys, ua rau lawv tshwj xeeb tshaj yog haum rau cov khoom uas yuav tsum tau muaj zog thiab hnav tsis kam, xws li aerospace cov qauv thiab kev kho mob cog. Txawm hais tias aluminium alloys yuav muaj zog me ntsis, lawv tseem ua tiav cov kev xav tau ntawm ntau yam kev siv niaj hnub thiab kev lag luam.
Melting Point thiab Kub-kub Resistance
Titanium alloys muaj cov ntsiab lus melting ntau dua thiab zoo dua qhov kub thiab txias dua piv rau aluminium alloys, ua rau lawv muaj kev ruaj khov hauv qhov kub thiab txias. Cov yam ntxwv no ua rau titanium alloys ua tau zoo hauv kev siv xws li foob pob hluav taws cav thiab dav hlau turbines. Thaum aluminium alloys tuaj yeem tiv taus qhov kub nruab nrab, lawv qhov kev ua haujlwm zoo li degrade ho nyob rau hauv high-temperature.
Corrosion Resistance thiab Oxidation Resistance
Titanium alloys muaj qhov tshwj xeeb corrosion tsis kam thiab oxidation tsis kam, muaj peev xwm tiv taus ntau yam tshuaj lom neeg thiab cov tshuaj electrochemical, ua rau cov yeeb yaj kiab oxide tuab. Qhov kom zoo dua no tso cai rau titanium alloys ua tau zoo nyob rau hauv ib puag ncig xws li dej hiav txwv, brine, acids, thiab alkalis. Txawm hais tias aluminium alloys kuj muaj qee qhov kev tiv thaiv corrosion thiab oxidation tsis kam, lawv tsis tshua zoo dua rau titanium alloys hauv qhov no.
Magnetism thiab hluav taws xob conductivity
Titanium alloys yog cov khoom tsis sib nqus, tsis cuam tshuam los ntawm cov hlau nplaum thiab tsis tsim cov hlau nplaum lawv tus kheej. Lawv kuj muaj qhov tsis zoo hluav taws xob conductivity thiab siab dua resistivity. Cov khoom no ua rau cov titanium alloys zoo heev rau cov ntawv thov uas xav tau kev sib nqus sib nqus, xws li kev sib nqus resonance imaging (MRI) thiab maglev tsheb ciav hlau. Ntawm qhov tod tes, aluminium alloys, thaum muaj qee qhov hluav taws xob conductivity, yog qhov tsim nyog rau cov ntawv thov uas xav tau kev sib nqus sib nqus thiab cov hluav taws xob siab, xws li cov khoom siv hluav taws xob thiab kev sib txuas lus.
