Molybdenum thiab tungsten yog ob qho tib si refractory hlau nrog cov ntsiab lus siab melting thiab zoo heev mechanical thiab thermal zog, tab sis lawv muaj qee qhov sib txawv:

1. Melting point: Lub melting point ntawm tungsten yog siab tshaj ntawm molybdenum. Tungsten muaj qhov siab tshaj plaws melting point ntawm 3422 ° C, thaum molybdenum muaj melting point ntawm 2623 ° C.

2. Ceev: Tungsten yog denser dua molybdenum. Tungsten muaj qhov ntom ntawm 19.25 g / cm3, thaum molybdenum muaj qhov ceev ntawm 10.28 g / cm3.

3. Mechanical zog: Tungsten nyuaj thiab nkig dua molybdenum. Tungsten feem ntau yog siv rau hauv cov ntawv thov uas qhov nyuaj thiab hnav tsis kam yog qhov tseem ceeb, xws li cov cuab yeej txiav thiab cov khoom siv hluav taws xob kub kub. Molybdenum, ntawm qhov tod tes, yog cov khoom siv ntau dua thiab feem ntau siv rau hauv cov ntawv thov uas muaj zog thiab yooj yim yog qhov tseem ceeb.

4. Daim ntaub ntawv: Vim nws qhov siab melting point thiab hardness, tungsten feem ntau yog siv nyob rau hauv high-temperature daim ntaub ntawv xws li aerospace kev lag luam, hluav taws xob tiv tauj, thiab raws li ib tug khoom siv rau lub teeb filaments. Molybdenum kuj tseem siv rau hauv cov ntawv thov kub, tab sis feem ntau yog xaiv rau nws lub peev xwm los tiv thaiv thermal shock thiab nws cov thermal conductivity zoo heev.

Hauv cov ntsiab lus, thaum molybdenum thiab tungsten yog ob qho khoom tseem ceeb nrog cov khoom zoo sib xws, lawv qhov sib txawv ntawm melting point, ntom, mechanical zog thiab daim ntaub ntawv ua rau lawv haum rau ntau yam kev lag luam thiab kev siv.