Kev paub txog tooj liab
Lub hauv paus kev paub ntawm tooj liab yog raws li nram no: Copper (Cuprum) yog ib qho khoom siv hlau thiab kuj yog ib qho kev hloov pauv. Nws lub cim tshuaj yog Cu, thiab nws lub npe Askiv yog tooj liab. Nws tus lej atomic yog 29. Ntshiab tooj liab yog cov hlau mos. Thaum qhov saum npoo tsuas yog txiav, nws yog xim liab-txiv kab ntxwv nrog cov xim hlau nplaum, thiab cov khoom siv ib leeg yog ntshav-liab.
Nws muaj qhov zoo ductility, siab thermal conductivity thiab hluav taws xob conductivity, yog li nws yog cov khoom siv feem ntau hauv cov cables thiab cov khoom siv hluav taws xob thiab hluav taws xob. Nws tseem tuaj yeem siv los ua cov khoom siv hauv tsev thiab tuaj yeem tsim ntau hom alloys. Copper alloys muaj cov cuab yeej zoo heev thiab tsis tshua muaj zog. Qhov tseem ceeb tshaj plaws yog tooj liab thiab tooj dag. Tsis tas li ntawd, tooj liab kuj yog cov hlau ruaj khov uas tuaj yeem siv tau ntau zaus yam tsis muaj kev puas tsuaj rau nws cov khoom siv kho tshuab.
Divalent tooj liab ntsev yog cov khoom siv tooj liab ntau tshaj plaws. Lawv cov hydrated ions feem ntau yog xiav, thaum chlorine li ligand yog ntsuab. Nws yog lub hauv paus ntawm cov xim ntawm cov zaub mov xws li azurite thiab turquoise, thiab tau siv dav los ua cov xim hauv keeb kwm. Copper tsev cov qauv yuav tsim verdigris (pab tooj liab carbonate) tom qab corrosion. Kho kom zoo nkauj kos duab feem ntau yog siv cov xim hlau tooj liab thiab tooj liab uas muaj pigments.
Tooj liab yog ib qho ntawm cov hlau qub tshaj plaws siv los ntawm tib neeg. Raws li thaum ntxov ua ntej keeb kwm, tib neeg pib mine qhib-qhov tooj liab mines thiab siv tooj liab lawv tau los ua riam phom, cuab yeej thiab lwm yam khoom siv. Kev siv tooj liab muaj kev cuam tshuam loj heev rau kev nce qib ntawm tib neeg kev vam meej thaum ntxov. Tooj liab yog ib yam hlau uas muaj nyob rau hauv lub ntiaj teb crust thiab dej hiav txwv. Cov ntsiab lus ntawm tooj liab nyob rau hauv lub ntiaj teb crust yog hais txog 0.01%, thiab nyob rau hauv ib co tooj liab deposits, cov ntsiab lus ntawm tooj liab yuav ncav cuag 3% mus rau 5%. Feem ntau ntawm cov tooj liab nyob rau hauv qhov muaj nyob rau hauv daim ntawv ntawm cov tebchaw, uas yog tooj liab ore.
