Kev taw qhia luv luv
Khoom npe: Samarium
Formula: Sm
CAS Nr .: 7440-19-9
Molecular Luj: 150.36
Qhov ceev: 7.353 g / cm3
Melting point: 1072°C
Puab: 10 x 10 x 10 mm cube
Samarium yog lub ntiaj teb tsis tshua muaj cov khoom uas yog cov xim dawb-dawb, mos, thiab cov hlau tsis zoo. Nws muaj qhov melting point ntawm 1074 ° C (1976 ° F) thiab qhov kub ntawm 1794 ° C (3263 ° F). Samarium paub txog nws lub peev xwm nqus cov neutrons thiab siv rau hauv kev tsim cov hlau nplaum samarium-cobalt, uas yog siv ntau yam kev siv, nrog rau hauv cov motors thiab generators.
Samarium hlau feem ntau yog tsim los ntawm ntau txoj kev, suav nrog electrolysis thiab thermal txo. Nws feem ntau yog muag nyob rau hauv daim ntawv ntawm ingots, rods, nplooj ntawv, los yog hmoov, thiab kuj yuav ua tau rau hauv lwm yam ntaub ntawv los ntawm cov txheej txheem xws li casting los yog forging.
Samarium hlau muaj ntau yam kev siv tau, suav nrog hauv kev tsim cov catalysts, alloys, thiab electronics, nrog rau kev tsim cov hlau nplaum thiab lwm yam khoom tshwj xeeb. Nws kuj tseem siv rau hauv kev tsim cov roj nuclear thiab hauv kev tsim cov tsom iav tshwj xeeb thiab ceramics.
Khoom siv: | Samarium |
Purity: | 99.9% |
Atomic naj npawb: | 62 |
Qhov ntom | 6.9 g.cm-3 ntawm 20 ° C |
Melting point | 1072 ° C |
Bolling point | 1790 ° C |
Dimension | 1 nti, 10mm, 25.4mm, 50mm, los yog Customized |
Daim ntawv thov | Khoom plig, science, exhibitions, sau, kho kom zoo nkauj, kev kawm, kev tshawb fawb |
Samarium yog ib qho xim dawb-dawb hlau uas muaj nyob rau hauv pawg lanthanide ntawm lub rooj zaum. Nws yog qhov ruaj khov ntawm chav tsev kub hauv huab cua qhuav, tab sis nws ignites thaum kub siab tshaj 150 C thiab tsim cov oxide txheej hauv cov huab cua ntub. Zoo lieuropiumsamarium muaj qhov ruaj khov oxidation xeev (II).