Platinum{0}}iridium alloythiab iridium -rhodium alloyyog ob qho tib si muaj nuj nqis hlau alloys rau siab -kub thiab corrosive ib puag ncig. Lawv muaj kev tiv thaiv zoo corrosion thiab thermal stability, tab sis lawv muaj pes tsawg leeg, lub cev muaj zog, cov yam ntxwv ntawm kev ua, thiab cov ntawv thov raug txawv.
Kev nkag siab txog qhov sib txawv no pab cov engineers thiab cov neeg yuav khoom xaiv cov hlau zoo rau kev ua haujlwm tshwj xeeb.
| Khoom | Platinum{0}}Iridium Alloy | Iridium{0}}Rhodium Alloy | |
|---|---|---|---|
| Lub ntsiab lus | Platinum + Iridium | Iridium + Rhodium | |
| Cov Qib Siab | PtIr10, PtIr20, PtIr30 | IrRh10, IrRh40, IrRh60 | |
| Melting Point | Nruab nrab ntawm Pt thiab Ir | Nyob ib ncig ntawm 2450 degree | |
| Corrosion Resistance | Zoo heev | Zoo heev | |
| Oxidation Resistance | Zoo | Zoo dua ntawm qhov kub thiab txias heev | |
| Tej kev siv | Hluav taws xob tiv tauj, khoom siv kho mob | Thermocouples, siab -cov khoom kub |
1. Tshuaj muaj pes tsawg leeg
Platinum-iridium alloy: Nws yog binary alloy raws li platinum, feem ntau ntxiv cov ntsiab lus iridium. Feem ntau suav nrog PtIr10, PtIr17.5, PtIr25, PtIr30, thiab lwm yam.
Iridium-rhodium alloy: Nws yog binary alloy uas muaj iridium thiab rhodium. Muaj cov alloys xws li IrRh10, IrRh40, IrRh50, thiab IrRh70.
2. Kev ua haujlwm
Platinum-iridium alloy: Kev ua haujlwm ua haujlwm tsis zoo nrog qhov nce ntawm iridium cov ntsiab lus, thiab nws yuav tsum tau ua tiav los ntawm kev ua haujlwm siab -kub kub ua ntej nws tuaj yeem txias - ua cov ntaub ntawv.
Iridium-rhodium alloy: Nws yog feem ntau melted los ntawm argon tiv thaiv nyob rau hauv ib tug siab - zaus rauv, thiab lub ingot yog kub dov thiab txias ua kom tsim nyog.
3. Lub cev muaj zog
Qhov ceev: Qhov ceev ntawm platinum{0}} iridium alloy feem ntau yog nruab nrab ntawm cov platinum ntshiab (21.45 g / cm3) thiab ntshiab iridium (22.56 g / cm3); qhov ceev ntawm iridium-rhodium alloy yog li 22 g / cm3.
Melting point: Lub melting point ntawm platinum - iridium alloy feem ntau yog nruab nrab ntawm lub melting point ntawm platinum, 1772℃, thiab lub melting point ntawm iridium, 2446℃; lub melting point ntawm iridium-rhodium alloy yog siab li 2450℃.
4. Cov khoom siv tshuaj
Corrosion kuj: Ntawm cov platinum{0}} iridium alloys, alloys uas muaj ntau tshaj 30% iridium tsis corroded los ntawm boiling aqua regia; iridium-rhodium alloy muaj kev tiv thaiv corrosion zoo heev thiab tuaj yeem ruaj khov nyob rau hauv ib puag ncig hnyav xws li kub siab thiab muaj zog acids.
Oxidation kuj: Platinum- iridium alloy muaj qee yam oxidation tsis kam ntawm qhov kub thiab txias, tab sis qhov siab - kub oxidation tsis kam ntawm iridium- rhodium alloy muaj zog dua li cov ntshiab iridium. Thaum 2000 degree, IrRh60 poob txog 5% ntawm nws qhov hnyav los ntawm oxidation, thaum ntshiab iridium poob ntau li 27%.
5. Daim ntawv thov teb
Platinum-iridium alloy: Nws yog cov khoom siv hluav taws xob sib txuas ua ke siv rau kev sib cuag ntawm lub cav cav, siab -relays rhiab heev, thiab hluav taws xob tiv tauj ntawm micromotors, thiab lwm yam.; nws tseem tuaj yeem siv los tsim cov khoom siv kho mob xws li pacemakers thiab kho hniav, cov khoom tseem ceeb hauv cov tshuab dav hlau lossis cov kav dej tshuaj, thiab lwm yam.
Iridium-rhodium alloy: Feem ntau yog siv los ua siab - kub los tiv thaiv - oxidation thermocouples nrog kev ua haujlwm kub tshaj 2000℃. Nws kuj tseem tuaj yeem siv los tsim cov khoom siv hluav taws xob siab - kev ntseeg tau hluav taws xob tiv tauj, electrodes, connectors, thiab lwm yam khoom siv hluav taws xob, nrog rau cov catalytic converters nyob rau hauv petrochemicals los yog tsheb tso tsheb, thiab lwm yam.
FANMETALyog ib lub chaw tsim khoom ntawm cov khoom siv hlau muaj txiaj ntsig nrog ntau tshaj 20 xyoo ntawm kev paub dhau los. Peb tuaj yeem muab cov neeg siv khoom nrog cov xov hlau,cov khoom siv platinum, los yogcov khoom siv electrodeua los ntawm palladium-iridium alloy, platinum-iridium alloy, iridium-rhodium alloy, thiab platinum-rhodium alloy. Cov khoom zoo no -zoo thiab nqi- cov khoom siv tau zoo tau raug xa tawm mus rau txawv teb chaws xws li Tebchaws Meskas, Canada, Switzerland, Indonesia, Brazil, Hungary, Mexico, thiab lwm yam, thiab tau txais kev qhuas los ntawm cov neeg siv khoom. Txawm hais tias platinum-iridium alloy thiab iridium-rhodium alloy yog ob qho tib si zoo hlau, lawv muaj qhov sib txawv me me ntawm cov yam ntxwv thiab kev siv.
