Zoo zoo nkauj tshooj

Zoo zoo nkauj tshooj - yog thawj ntawm tag nrho cov kub, nyiaj thiab kub dawb. Lawv yog cov tsis raug mus rau corrosion thiab oxidation, thiab qhov no tso lawv sib nrug los ntawm lwm yam hlau. Lawv reserves yog me me, tab sis lawv cov khoom yog tiag nws. Rau cov qeb xws li noble thiab platinum co, xws li palladium, ruthenium, iridium, rhodium thiab osmium. Platinum hlau yog txawv thermal stability, ductility, corrosion kuj, reflectivity thiab emissivity, yog tseem thermal thiab hluav taws xob conductivity thiab siab magnetic yam ntxwv. Cov cim lub cev thiab tshuaj zog yog tsis tsuas co lawv tus kheej, tab sis kuj lawv lub tebchaw thiab cov ntaub ntawv nyob rau hauv lawv lub hauv paus: alloys, catalysts, hmoov, coatings, oxide films. Lawv yog cov tseem ceeb nyob rau hauv cov tshuaj thiab petrochemical kev lag luam, electronics, hluav taws xob, nuclear thiab missile technology, kev ntsuas. Cov co muab ib tug guaranteed ua hauj lwm muaj kev cia siab xam, raws li zoo raws li ntsuas thiab kev tswj pab kiag li lawm thiab instrumentation.

Tag nrho cov noble co muaj qhov tseem ceeb zoo uas yuav tsum tau rau qhov siv thiab ua ntau yam jewellery. Hais tias xws li cov khoom raws li softness, ductility, plasticity, fusing muaj peev xwm nrog lwm co. Vim tus nqi lawv tau hu ua precious.

Lub kim tshaj plaws precious hlau - kub. Nws yog qhov tsuas yog ib hlau uas muaj ib tug kaj daj xim nyob rau hauv nws cov purest daim ntawv. Yog hais tias nws polish, nws brilliance yuav skyrocket. Kub yog tsis raug rau saum huab cua oxidation, resistant rau dej rau nws. Vim nws tsenneyshemu vaj tse - tshuaj kuj ntawm tag nrho cov co kub pab pawg neeg pom zoo raws li qhov feem ntau noble. Cov hniav nyiaj hniav kub kev lag luam yog lub hauv paus ntawm cov tseem kub zoo zoo nkauj tshooj alloys.

Muaj ntau xav zoo zoo nkauj tshooj dawb, mas nyob rau hauv hniav nyiaj hniav kub. Tej hlau yog nyiaj. Nyob rau hauv tas li ntawd mus rau lub nyiaj ornaments siv rau qhov siv thiab ua cutlery, crockery. Machined nyiaj lends nws tus kheej tau yooj yim. Qhov no hlau muaj ductility, plasticity, malleability. Nws kuj yog muaj reflectivity rau nws, thermal thiab hluav taws xob conductivity. Ib tug tseem ceeb ib feem ntawm lub rho nyiaj siv nyob rau hauv electronics, instrumentation, rau co nyiaj npib, lub txheej ntawm tsom iav, nyob rau hauv photography. Nyob rau hauv xyoo tsis ntev los, lub Scope ntawm no hlau yog lossi expanding. Los ntawm dej nyiaj yog tsis ruaj khov heev. Nws tau txais ib tsos tsaus tsawv ntxoov ntxoo.

Tsis tas li ntawd noble co muaj xws li platinum thiab nws daim ntawv teev - hnyav hlau thiab refractory. Nyob rau hauv cov xwm muaj yog tsis muaj platinum nyob rau hauv nws cov purest daim ntawv. Nws yog nyob rau hauv daim ntawv ntawm ib tug tej yam ntuj tso hlau nrog rau lwm yam zoo zoo nkauj tshooj xws li palladium, ruthenium, rhodium, osmium, iridium. Platinum muaj ib tug ntau dua hardness tshaj kub thiab nyiaj. Tshuaj kuj yog me ntsis cuam tshuam. Platinum vysokoprobny hlau yog dav siv nyob rau hauv qhov siv thiab ua hniav nyiaj hniav kub.

Tus qauv ntawm lub platinum pab pawg neeg yog palladium. Nws tshuaj thaj chaw ntawm platinum hauv qab no. Nws muaj ib tug zoo nkauj, yuav luag dawb. Palladium yog lub feem ntau hnav, saj zawg zog, thiab tsis tshua muaj-melting yas los ntawm cov platinum pab pawg neeg hlau. Nws yuav yooj yim yuav kuav los tiag thiab mus txog rau lub hlau. Palladium tsis tarnish thiab txig amenable mus polishing. Nws yog muaj nyob rau hauv nyob tus yeees ntawm tsawg-qib kub rau kom nws tiv thaiv corrosion zog.

Lub platinum pab pawg neeg ntawm cov hlau muaj xws li rhodium, li nws xiavlus dawb txhuas. Qhov no hlau yog yus muaj los ntawm ib tug hardness, friability. Nws muaj ib tug xam qhovkev siab reflectivity. Rhodium yog suav tias yog sib resistant hlau. Qhov no hlau yog resistant rau cov teebmeem ntawm cov pa, tshuaj chlorine ua, sulfur, phosphorus. Tshuaj thiab lub cev thaj chaw ntawm lub rhodium yog siv rau txheej cov khoom kub thiab nyiaj.

Ruthenium - refractory hlau. Hardness thiab brittleness nws muaj raws li zoo raws li lub rhodium. Nws siv cov khoom siv no nyob rau hauv lub twj paj nruag, nyob rau hauv me me qhov ntau muaj nyob rau hauv platinum alloys.

Ib tug ntawm cov platinum pab pawg neeg hlau yog iridium, tus yam ntxwv uas yog zoo li tus yam ntxwv ntawm ruthenium thiab rhodium. Ntawm tag nrho cov co, nws yog ib qho ntawm feem ruaj khov sib. Nws yog kev koom siv nyob rau hauv lub tshuaj ua lag luam.

Qhov kawg tus neeg sawv cev ntawm platinum pab pawg neeg hlau - osmium. Machining nws tsis yog kev kawm, nyob rau hauv acid insoluble. Lub osmium alloys yog tswvcuab rau kom lawv tshuaj kuj thiab hardness.