Argentium Nyiaj Vs Sterling Silver

Tsob Ntoo Sterling Silver yog ib qho hlau ntawm cov nyiaj (92.5%) thiab tooj liab (7.5%). Feem ntau koj yuav pom cov lej 925 stamped ntawm cov hniav nyiaj hniav kub, lav tias cov khoom muaj 92.5% nyiaj.

Cov nyiaj ntshiab yog mos heev rau siv rau feem ntau cov hniav nyiaj hniav kub, tab sis nrog me me ntxiv ntawm tooj liab, nyiaj yuav muaj zog ntau dua thaum tuav nws lub peev xwm los ua kom zoo li tus thiab soldered. Qhov teeb meem yog Sterling Silver ua tarnished sai sai los ntawm cov tshuaj tiv thaiv ntawm sulfur compounds nyob rau hauv cov huab cua nrog tooj liab. Qhov tshwm sim ntawm cov tshuaj tiv thaiv tooj liab thiab sulfur yog tsim los ntawm qhov tsaus ntuj tarnish ntawm cov hlau.

Argentium Silver tau pib tshem tawm qhov teeb meem ntawm tarnish. Nws yog feem ntau tarnish resistant nyiaj muaj hnub no. Peter Johns, tus xibfwb thiab kws ua haujlwm nyiaj txiag ntawm Middlesex University, nrhiav pom hauv 1990's nws tuaj yeem tsim Sterling Silver niaj hnub uas tsis muaj teeb meem ntawm tarnishing. Qhov no ua tiav los ntawm kev hloov 1% ntawm Germanium rau tooj liab. Cov ntsiab lus nyiaj tseem nyob ntawm 92.5%, tab sis Argentium Silver tiv taus tarnishing.

Germanium hlub oxygen! Germanium nyob rau hauv Argentium oxidizes ua ntej tshaj tooj liab thiab nyiaj nyob rau hauv lub xub ntiag ntawm huab cua, tsim ib tug tsis pom kev tiv thaiv germanium oxide txheej txheej. Cov oxide muaj peev xwm ua rau nws tus kheej tsis tu ncua ntawm qhov kub thiab txias los ntawm kev tsiv teb tsaws ntawm germanium atoms mus rau saum npoo. Qhov tshwj xeeb oxidation ntawm germanium tiv thaiv kev tsim tarnish. Qhov no ua rau koj cov hniav nyiaj hniav kub saib zoo nkauj yam tsis tas yuav tsum tau ntxuav cov tarnish.

Thaum ua hauj lwm nrog nyiaj alloys lawv yuav tsum tau mos thiab malleable thaum lub sij hawm tsim los yog shaping txheej txheem. Txawm li cas los xij, cov khoom tiav yuav tsum muaj zog thiab ruaj khov, kom cov hlau tsis yooj yim rau khawb, denting thiab deformation.

Argentium Silver muaj peev xwm tsim tau rau hauv cov duab nyuaj thaum nyob hauv nws qhov muag tag nrho. Nws yog ib qho yooj yim rau solder thiab teem lub pob zeb. Thaum ua tiav nrog kev tsim kho ntawm cov hniav nyiaj hniav kub, nws tuaj yeem yooj yim hardened los ntawm kev kho cua sov yooj yim. Argentium silver lub hardness yog nce ntau yam tsis muaj kev pheej hmoo cuam tshuam nrog quenching.