Nqus nyiaj plating lwm alloy hnav-resistant txheej
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Nqus nyiaj plating lwm alloy hnav-resistant txheej
Lwm cov hlau hnav-resistant coatings Ib co alloy hnav-resistant coatings kuj tau sim siv rau cov iav. Piv txwv li, Ni-P-Co alloy txheej yog tso rau ntawm tus hniav nto ntawm 45 # steel iav, uas yog txheej txheej alloy kom tau txais cov qauv zoo heev, uas tuaj yeem ua kom ntev kev sib cuag Lub neej qaug zog yog 1.144 ~ 1.533 zaug. Qee cov kws tshawb fawb tau kawm txog txheej txheej ntawm Cu hlau txheej thiab Ni-W alloy txheej ntawm cov hniav nto ntawm Cu-Cr-P alloy cam khwb cia hlau iav los txhim kho nws qhov kev sib cuag qaug zog; txheej Ni-W thiab Ni-Co ntawm tus hniav nto ntawm HT250 cam khwb cia hlau iav Alloy txheej, piv nrog cov iav tsis muaj coated, hnav tsis kam yog nce 4 ~ 6 zaug.
Nqus nyiaj plating super nyuaj zaj duab xis
Super tawv zaj duab xis hais txog cov yeeb yaj kiab uas muaj qhov tawv tawv ntau dua 40GPa, hnav zoo heev, kub tsis kam, tsis tshua muaj kev sib txhuam coefficient thiab thermal expansion coefficient, feem ntau amorphous pob zeb diamond zaj duab xis thiab CN zaj duab xis. Amorphous pob zeb diamond zaj duab xis muaj cov khoom amorphous, tsis muaj qhov ntev-ntev xaj qauv, thiab muaj ntau ntawm CC tetrahedral bonds, yog li nws tseem hu ua tetrahedral amorphous carbon film. Raws li amorphous carbon zaj duab xis, pob zeb diamond-zoo li carbon txheej (DLC) muaj ntau yam zoo xws li pob zeb diamond, xws li thermal conductivity, siab hardness, siab elastic modulus, me me thermal expansion coefficient, zoo tshuaj stability, zoo hnav tsis kam. cov khoom thiab qis coefficient ntawm kev sib txhuam. Cov kev tshawb fawb tau pom tias txheej txheej pob zeb diamond zoo li cov pa roj carbon monoxide ntawm lub iav iav tuaj yeem txuas ntxiv lub neej kev pab cuam los ntawm 6 zaug, thiab kev qaug zog kuj tseem txhim kho [22]. CN zaj duab xis, tseem hu ua amorphous carbon nitride zaj duab xis, nws cov qauv siv lead ua zoo ib yam li -Si3N4 covalent compound, yog li nws tseem hu ua -C3N4. Pib los ntawm thawj lub hauv paus ntsiab lus, Liu thiab Cohen li al. siv lub pseudopotential zog band xam cov txheej txheem los ua cov txheej txheem theoretical suav thiab paub tseeb tias -C3N4 muaj lub zog ruaj khov, ruaj khov kho tshuab, tsawg kawg yog ib lub xeev metastable, thiab nws cov elastic modulus. Tus nqi sib npaug ntawm pob zeb diamond [23], thiab kev ua haujlwm zoo, uas tuaj yeem txhim kho qhov tawv tawv thiab hnav tsis kam ntawm cov khoom siv thiab txo cov kev sib txhuam coefficient.
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