Cov cuab yeej coated yog nyob rau hauv zoo zog thiab toughness carbide los yog siab ceev steel (
Ceramics, pob zeb diamond thiab cubic boron nitride superhard cov ntaub ntawv xws li rab chais hniav kuj tau)
Nyob rau saum npoo, siv txoj kev vapor deposition txheej txheej ntawm hnav-resistant refractory hlau los yog nonmetal compound thiab kev npaj.
Txheej raws li cov tshuaj barrier ntawm cov cuab yeej txiav thiab thermal barrier, tuaj yeem txo qhov sib txawv thiab cov tshuaj tiv thaiv ntawm cov cutter thiab workpiece, yog li txo cov matrix ntawm kev hnav thiab tsim kua muag, txhawm rau txhim kho lub neej kev pab cuam ntawm cov cuab yeej txiav.
Cov cuab yeej coated muaj qhov tawv tawv thiab hnav tsis kam, cov khoom siv tshuaj ruaj khov, zoo kub tsis kam rau oxidation, tsis tshua muaj kev sib txhuam coefficient thiab thermal conductivity tsawg, tuaj yeem txo qhov adhesion tshwm sim, tsis yooj yim los tsim cov qog devolop thiab lwm yam, thaum txiav cov cuab yeej coated siab dua. tshaj uncoated tej cuab yeej lub neej thiab txiav ceev yog ntau du, ntau tuaj yeem txo qhov poob ntawm cov cuab yeej txiav.
Cov cuab yeej coated yuav muab faib ua plaub yam: cov cuab yeej kub ceev steel, coated carbide tej cuab yeej, nrog rau hauv ceramics thiab superhard cov ntaub ntawv (
Pob zeb diamond los yog cubic boron nitride)
Cov hniav ntawm cov cuab yeej coated.
Tab sis ua ntej ob hom coated cov cuab yeej siv feem ntau.
Nyob rau hauv ceramics thiab super hardness coatings ntawm cov hniav yog hardness yog qis dua cov ntaub ntawv matrix, lub hom phiaj yog los txhim kho lub pob txha toughness ntawm cov hniav nto (
tuaj yeem nce ntau dua 10%)
, tuaj yeem txo cov hniav ntawm ntug thiab puas, nthuav dav ntawm daim ntawv thov.
