Kev ua haujlwm ntawm rhodium plating
Cov khoom siv tshuaj lom neeg ntawm rhodium yog qhov ruaj khov, thiab nws nyuaj rau kev hnov mob nrog sulfide thiab carbon dioxide hauv huab cua. Nyob rau hauv chav tsev kub, nws yog insoluble nyob rau hauv nitric acid thiab nws cov ntsev, thiab txawm insoluble nyob rau hauv dej. Nws yog ruaj khov rau ntau yam muaj zog alkalis, tab sis rhodium yog soluble hauv concentrated sulfuric acid. Lub cev lub cev ntawm rhodium yog qhov zoo. Ntxiv nrog rau kev hnav zoo thiab hluav taws xob conductivity, nws muaj peev xwm rov qab xav txog, thiab nws cov coefficient ntawm kev xav tuaj yeem ncav cuag 80% (nyiaj yog 100%), thiab nws tuaj yeem nyob tsis hloov mus ntev. Yog li ntawd, nws yog feem ntau siv raws li ib tug anti-silver discoloration txheej. Tom qab kev sim, 0.1um rhodium txheej tuaj yeem tiv thaiv cov xim nyiaj los ntawm kev hloov xim rau ntau xyoo. Cov txheej txheem rhodium muaj kev tiv thaiv qis heev thiab siab hardness, yog li nws feem ntau siv los ua txheej rau cov ntsiab lus sib cuag.
Lub vuam kev ua tau zoo ntawm rhodium tsis zoo heev, vim hais tias cov kev ntxhov siab sab hauv ntawm txheej yog qhov loj. Rhodium plating thev naus laus zis tau pib siv hauv Tebchaws Meskas hauv xyoo 1930, tab sis nws tau siv los ua cov txheej txheem zoo nkauj. Tom qab ntawd, nrog kev loj hlob sai ntawm kev lag luam hluav taws xob, rhodium plating tau ua lub luag haujlwm tseem ceeb hauv kev tiv thaiv cov nyiaj tsis muaj xim thiab cov ntsiab lus hluav taws xob. Nyob rau hauv xyoo tas los no, rhodium plating tau dhau los ua neeg nyiam hauv cov hniav nyiaj hniav kub electroplating kev lag luam. Electroplating ib txheej ntawm rhodium rau saum npoo ntawm cov hniav nyiaj hniav kub tuaj yeem tiv thaiv cov nyiaj los ntawm kev hloov xim. Tus nqi pheej yig thiab nws tuaj yeem ua rau pom zoo li platinum zoo nkauj. Vim tias qhov ntom ntawm rhodium tsawg dua li ntawm platinum, tus nqi ntawm rhodium plating yog qis dua li ntawm platinum plating.