Titanium thiab nws cov khoom

Titanium yog cov tshuaj lom neeg hlau, cov cim tshuaj Ti, atomic naj npawb 22, belongs rau refractory tsawg-ferrous hlau.

Titanium zog thiab muaj cov pa roj carbon, hydrogen, oxygen thiab lwm yam impurities, lub purest titanium iodide impurity ntsiab lus tsis ntau tshaj 0.1%, tab sis nws lub zog yog tsawg, siab plasticity. 99.5% kev lag luam ntshiab titanium khoom yog: ceev P=4.5g / cm3, melting point ntawm 1800 degree C, thermal conductivity λ=15.24W / (MK), tensile zog σ b {{10} }MPa, elongation: δ=25%, seem elongation: δ =25%, seem shrinkageψ=25%, elastic kov E=1.078 × 105MPa, hardness HB195.

Titanium yog cov nyiaj-hloov nyiaj dawb, muaj lub zog qis, muaj lub zog siab, tsis muaj zog, tsis muaj tshuaj sib nqus, biocompible. Ntawm lawv, kev ua haujlwm siab zog yog qhov tshwj xeeb, lub zog siab titanium alloy lub zog thiab siab zog steel, tab sis qhov ceev yog yuav luag ib nrab ntawm cov me me. Tsis tas li ntawd, titanium thiab alloys kuj muaj lub cim xeeb zoo, superconductivity thiab hydrogen cia thiab lwm yam ntxwv.

Titanium khoom

Lub zog siab: 1.3 npaug ntawm aluminium alloys, 1.6 npaug ntawm magnesium alloys, 3.5 npaug ntawm cov hlau tsis muaj steel, tus yeej ntawm cov ntaub ntawv hlau. Titanium alloy ntom yog feem ntau nyob ib ncig ntawm 4.5g / cm3, tsuas yog 60% ntawm cov hlau, lub zog ntawm ntshiab titanium yog ze rau lub zog ntawm cov hlau zoo tib yam, ib co high-strength titanium alloy tshaj lub zog ntawm ntau alloy steel qauv, yog li titanium alloys dua. lub zog (lub zog / ntom) yog ntau dua li lwm cov khoom siv hlau, tuaj yeem ua los ntawm chav tsev ntawm lub zog siab, toughness, lub teeb yuag qhov chaw thiab cov khoom, nyob rau hauv lub aircraft engine structural qhov chaw, skeleton, daim tawv nqaij, nyob rau hauv lub aircraft engine qauv, skeleton. , daim tawv nqaij, fasteners thiab tsaws iav, thiab lwm yam yog siv titanium alloy.

Lub zog thermal muaj zog: kev siv qhov kub thiab txias tshaj li cov aluminium alloy ob peb puas degrees siab dua, nyob rau hauv nruab nrab qhov kub thiab txias tseem tuaj yeem tswj tau qhov yuav tsum tau muaj zog, tuaj yeem nyob rau hauv qhov kub ntawm 450-500 degree C ntawm kev ua haujlwm ntev.

Zoo corrosion kuj: tiv taus acid, alkali thiab atmospheric corrosion, tshwj xeeb tshaj yog muaj zog tiv taus pitting thiab kev ntxhov siab corrosion. Titanium alloy nyob rau hauv cov huab cua ntub thiab seawater media ua hauj lwm, lwm yam corrosion kuj zoo dua stainless hlau; pitting, acid corrosion, kev nyuaj siab corrosion kuj yog tshwj xeeb tshaj yog muaj zog, alkali, chloride, chlorine organic khoom, nitric acid, sulfuric acid, thiab lwm yam muaj corrosion kuj zoo heev, tab sis titanium muaj ib tug txo oxygen thiab chromium ntsev media corrosion kuj tsis zoo.

Kev ua tau zoo ntawm qhov kub thiab txias: titanium alloy TA7 nrog cov ntsiab lus qis heev tuaj yeem tswj tau qee qhov kev ua tau zoo ntawm -253 degree . Titanium alloy nyob rau hauv qis thiab ultra-tsawg kub, tseem tuaj yeem tswj nws cov khoom siv kho tshuab, kev ua haujlwm kub qis yog qhov zoo, cov ntsiab lus cuam tshuam ntawm cov titanium alloy tsawg heev, xws li TA7, hauv -253 degree C kuj tseem tuaj yeem tuav tau qee qhov kev kawm ntawm plasticity, yog li kev lag luam titanium alloy yog qhov tseem ceeb ntawm cov khoom siv hluav taws xob qis.

Kev siv tshuaj lom neeg: cov tshuaj lom neeg ua haujlwm siab ntawm qhov kub thiab txias, yooj yim nrog hydrogen, oxygen thiab lwm yam gaseous impurities hauv huab cua tshuaj tiv thaiv los tsim cov txheej txheem hardened. Titanium cov tshuaj lom neeg ua haujlwm loj, thiab cov cua O, N, H, CO, CO2, dej vapor, ammonia, thiab lwm yam los tsim cov tshuaj tiv thaiv muaj zog. Thaum cov ntsiab lus carbon ntau dua 0.2%, TiC nyuaj yuav raug tsim nyob rau hauv titanium alloy; ntawm qhov kub siab dua, TiN tawv txheej txheej yuav raug tsim los ntawm kev ua haujlwm nrog N. Saum toj no 600 degree, titanium absorbs oxygen los ua ib txheej txheej hardened nrog siab hardness; qhov nce hauv cov ntsiab lus hydrogen kuj yuav tsim ib txheej embritled. Qhov tob ntawm cov tawv thiab nkig txheej txheej uas tshwm sim los ntawm kev nqus cov pa tuaj yeem ncav cuag 0.1-0.15 hli, nrog rau qib hardening ntawm 20-30%. Titanium cov tshuaj affinity kuj loj, yooj yim nrog cov adhesion tshwm sim uas tsim los ntawm kev sib txhuam nto.

Thermal conductivity yog me me, elastic kov me me: titanium thermal conductivity λ=15.2W / (M, K) yog li 1/4 ntawm npib tsib xee, hlau 5/1, txhuas 1/14, thiab ntau yam titanium alloys tshaj titanium coefficient ntawm thermal conductivity ntawm thermal conductivity ntawm titanium alloy txog 50% down, titanium alloys, elastic kov txog 1/2 ntawm cov hlau, yog li nws rigidity yog pluag, yooj yim deform, tsis haum rau ua ntev nyias rods thiab nyias-walled qhov chaw, txiav, machining nto ntawm lub rebound yog loj, li ntawm 2-3 zaug, ua rau cov nto ua raws li kev sib txhuam nto. Stainless hlau 2-3 zaug, ua rau muaj kev sib txhuam hnyav, adhesion, kev sib txuas ntawm cov cuab yeej rear hniav nto.