Kev Siv Nickel Sheaths Li Cas Txhim Kho Lub Sij Hawm ntawm Thermocouples hauv Corrosive Ib puag ncig?

Nickel sheaths yog cov ntaub ntawv pov thawj zoo heev tiv thaiv corrosion. Nyob rau hauv ib puag ncig corrosive, ntau yam khoom tuaj yeem ua kom nrawm dua vim tias muaj cov kua qaub, cov hauv paus, thiab cov khoom sib txawv corrosive. Nickel, txawm li cas los xij, muaj tshuaj ntsuab tsis kam tiv thaiv corrosion, uas ua rau tiv thaiv cov thermocouple los ntawm kev puas tsuaj. Qhov no tso cai rau lub thermocouple khaws nws qhov tseeb thiab muaj peev xwm nyob rau lub sijhawm ntev. Piv txwv li, nyob rau hauv chemical ua paj los yog marine ib puag ncig nyob rau hauv muaj kev tshaj tawm rau cov dej ntsev thiab cov ntsiab lus corrosive sib txawv, nickel sheathed thermocouples tuaj yeem tiv taus cov xwm txheej nyuaj thiab tswj kom muaj kev ntsuas kub zoo.
Lawv muab cov neeg kho tshuab siab tshaj plaws. Ntxiv nrog rau kev tiv thaiv corrosion, npib tsib xee sheaths ntxiv rau cov khoom siv hluav taws xob rau cov thermocouple. Qhov no yog qhov tseem ceeb hauv ib puag ncig uas tuaj yeem ua rau lub cev muaj zog lossis cuam tshuam. Nickel sheaths tuaj yeem tiv thaiv lub thermocouple los ntawm kev puas tsuaj vim muaj kev vibrations, shocks, los yog txawv mechanical zog. Qhov no ua rau kom paub tseeb tias qhov ruaj khov thiab kev ntseeg siab ntawm cov thermocouple.
Nickel muaj qhov zoo tshaj plaws thermal conductivity. Cov cuab tam no tso cai rau kev hloov ntsuab ntawm qhov sov sov los ntawm ib puag ncig mus rau qhov sib txuas ntawm thermocouple. Qhov no tshwm sim nyob rau hauv qhov tseeb ntsuas kub thiab lub sij hawm tshwm sim sai dua. Nyob rau hauv ib puag ncig corrosive nyob rau hauv qhov kev hloov kho qhov kub thiab txias tuaj yeem tshwm sim sai, qhov txias tshaj plaws thermal conductivity ntawm npib tsib xee sheaths yog qhov muaj txiaj ntsig zoo rau kev tau txais cov ntaub ntawv zoo sijhawm thiab raug kub.
Lawv yuav raug them los yog alloyed kom muaj kev nyab xeeb. Qee qhov xwm txheej, nickel sheaths yuav raug them nrog cov khoom sib txawv lossis alloyed nrog cov hlau sib txawv kom zoo nkauj rau lawv cov kev tiv thaiv corrosion thiab kav ntev. Piv txwv li, npib tsib xee tej zaum yuav alloyed nrog chromium los ua cov hlau tsis muaj steel, uas muaj kev tiv thaiv corrosion ntau dua. Cov coatings thiab alloys no tuaj yeem muab cov txheej txheem ntxiv ntawm kev nyab xeeb rau cov thermocouple nyob rau hauv ib puag ncig corrosive extraordinarily.