Kev nkag siab txog qhov kub thiab txias ua haujlwm ntawm cov khoom sib txawv yog qhov tseem ceeb rau kev xaiv cov ntaub ntawv zoo rau kev siv kub. Hauv tsab xov xwm no, peb yuav tshawb xyuas qhov kub thiab txias ua haujlwm ntawm cov khoom siv feem ntau xws li titanium, stainless hlau, ceramic, nickel, thiab molybdenum. Los ntawm kev paub txog lawv cov kev txwv kub, cov kws tsim khoom thiab cov neeg tsim qauv tuaj yeem txiav txim siab kom paub meej txog kev ncaj ncees thiab kev ua tau zoo ntawm lawv cov khoom hauv qhov xav tau ib puag ncig.
Titanium
Titaniumyog ib lub teeb yuag hlau paub txog nws zoo heev corrosion kuj thiab siab zog. Kev ua haujlwm kub ntawm titanium alloys feem ntau yog li ntawm 500 degree txog 600 degree, nyob ntawm cov ntsiab lus alloying thiab kev kho cua sov. Thaum kub siab dua, titanium lub zog txo qis, thiab nws ua rau oxidation ntau dua.
Stainless hlau
Stainless hlauyog ib qho hlau uas muaj chromium, npib tsib xee, thiab lwm yam khoom los txhim kho nws cov corrosion kuj. Qhov kub thiab txias ua haujlwm ntawm stainless hlau sib txawv nyob ntawm qhov tshwj xeeb alloy thiab muaj pes tsawg leeg. Feem ntau, cov austenitic stainless hlau zoo li 304 thiab 316 tuaj yeem siv nyob rau hauv chav tsev kub thiab tswj kom zoo corrosion kuj nyob rau hauv high-temperature ib puag ncig. High-temperature stainless hlau zoo li 310 thiab 253MA pom zoo thaum tshav kub kub tsis kam nyob rau hauv thaj tsam ntawm 800 degree mus rau 1200 degree.
Ceramic
Cov khoom siv ceramic yog cov khoom tsis yog xim hlau uas muaj oxides, nitrides, lossis carbides. Ntau hom ceramics muaj qhov sib txawv ua haujlwm kub. Feem ntau, cov ceramics xws li txhuas oxide (Al2O3) tuaj yeem ua haujlwm ntawm qhov kub thiab txias, nrog kev ua haujlwm ntau tshaj 1000 degree. Lwm cov khoom siv kub kub xws li silicon carbide (SiC) thiab boron nitride (BN) tuaj yeem siv tau ntawm qhov kub thiab txias, nce siab tshaj 1500 degree.
Nickel
Nickelyog hlau paub txog nws zoo heev corrosion kuj thiab high-temperature zog. Nickel thiab nws cov alloys pom zoo oxidation thiab kub tsis kam ntawm qhov kub siab. Kev ua haujlwm kub ntau ntawm nickel alloys nyob ntawm qhov tshwj xeeb alloy hom thiab daim ntawv thov, feem ntau yog li ntawm 600 degree txog 1000 degree.
Molybdenum
Molybdenum yog cov hlau melting point uas muaj qhov kub thiab txias thiab thermal stability. Molybdenum muaj qhov kub thiab txias ua haujlwm, feem ntau ntawm 1000 degree txog 2000 degree. Nws yog feem ntau siv rau hauv cov ntawv thov xws li smelting, cov khoom siv hluav taws xob, thiab cov khoom siv hluav taws xob kub.
Kev xaiv cov khoom siv nrog qhov tsim nyog ua haujlwm kub yog qhov tseem ceeb rau kev ua haujlwm thiab kev ua haujlwm ntev ntawm cov khoom hauv cov ntawv thov kub. Titanium, stainless hlau, ceramic, nickel, thiab molybdenum muab cov khoom tshwj xeeb thiab muaj peev xwm ua haujlwm kub. Cov kws tsim qauv thiab cov kws tsim qauv yuav tsum xav txog yam xws li cov khoom siv purity, alloying cov ntsiab lus, kev kho cua sov, thiab kev siv ib puag ncig thaum xaiv cov khoom tsim nyog rau lawv cov kev xav tau tshwj xeeb. Los ntawm kev nkag siab txog qhov kub thiab txias ua haujlwm ntawm cov ntaub ntawv no, ib tus tuaj yeem txiav txim siab paub thiab tsim cov tshuab muaj zog uas tuaj yeem tiv taus qhov kev xav tau ntawm qhov kub thiab txias.
