Cubic Boron Nitride yog dab tsi
Jul 30, 2024
Cubic boron nitride (CBN) yog cov khoom siv superhard uas yog siv rau kev txiav thiab sib tsoo daim ntawv thov. Nws yog tsim los ntawm synthesizing boron nitride crystals thiab compressing lawv ntawm kev kub siab thiab kub.
CBN yog cov khoom siv nyuaj tshaj plaws thib ob paub rau tus txiv neej tom qab pob zeb diamond, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev txiav thiab sib tsoo cov ntaub ntawv nyuaj xws li cov hlau tawv tawv, npib tsib xee-raws li alloys, thiab cam khwb cia hlau. Nws hardness thiab abrasion kuj ua rau nws zoo dua lwm yam ntaub ntawv rau kev tshem tawm cov khoom, uas ua rau ib tug ntau dua ntawm ntau lawm thiab txo downtime.
Sib nrug los ntawm nws cov khoom siv zoo heev, CBN kuj tseem muaj tshuaj lom neeg, uas txhais tau hais tias nws tiv taus ntau yam tshuaj thiab cov kua qaub. Nws kuj muaj cov coefficient tsawg ntawm thermal expansion, uas txhais tau hais tias nws tseem ruaj khov ntawm qhov kub thiab txias, ua rau nws muaj txiaj ntsig zoo rau cov ntawv thov kub.
CBN kuj muaj peev xwm ua tau cua sov thiab hluav taws xob, ua rau nws tsim nyog siv rau hauv cov ntawv thov hluav taws xob thiab cov dab dej kub. Nws tau raug siv los tsim cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob vim nws cov thermal conductivity zoo heev.
