Cov ntaub ntawv ceramic, feem ntau yog hais txog kev lag luam ceramics lossis cov ceramics siab heev, lawv tau siv ntau yam kev lag luam, qhov twg txhua yam muaj zog thiab tsis kam rau sab nraud quab yuam (xws li corrosion) yog qhov tseem ceeb ntawm kev ua haujlwm.Qhov hnav tsis kam yog qhov ntsuas kev ua haujlwm tseem ceeb los ntsuas cov khoom siv ceramic.Feem ntau cov neeg siv hardness los txiav txim qhov hnav tsis kam thiab lub zog ntawm alumina ceramic cov ntaub ntawv.Ntawd yog, qhov siab dua qhov hardness, qhov zoo dua qhov hnav tsis kam.Yog li yuav ua li cas kuaj cov hardness tsis ntawm hnav-resistant ceramics?
Hardness yog ib qho tseem ceeb tshaj plaws thiab nquag ntsuas cov khoom hauv alumina ceramics.Nws tuaj yeem txhais tau tias yog qhov ntsuas ntawm qhov kev ntxhov siab ntawm cov khoom siv ceramic lossis cov khoom siv.Hardness characterizes qhov tsis kam ntawm ceramic rau tawg, deformation, densification thiab hloov chaw.Feem ntau hais lus, Vickers thiab Knoop txoj kev yog dav siv rau kev kuaj hardness ntawm ceramics.Cov txheej txheem Vickers yog feem ntau.Nws ntsuas qhov hardness ntawm ceramics lossis lwm yam ntaub ntawv los ntawm kev ntsuas qhov loj ntawm theindentation sab laug los ntawm indenter.Nws yog haum rau qhov me me thiab nyias ntu.Nws siv lub pob zeb diamond indenter thiab lub teeb load los tsim ib qho indentation ntawm cov khoom raug kuaj.Tus nqi hardness kuj tuaj yeem ntsuas qhov tob ntawm qhov indentation tshwm sim los ntawm qhov indenter.
Raws li cov kev xav tau sib txawv ntawm kev ua lag luam rau kev ua haujlwm ntawm alumina ceramics, Chemshun Ceramics tsim AL2O3 92%, AL2O3 95%alumina hnav resistant ceramic cov ntaub ntawv.Cov ntsiab lus alumina cuam tshuam qhov hardness ntawm cov khoom siv ceramic rau qee qhov, uas yog, hnav tsis kam.Cov neeg siv khoom tuaj yeem xaiv qhov hnav-resistant ceramics nrog cov ntsiab lus alumina sib txawv raws li qhov xav tau ntawm qhov chaw ua haujlwm.
Post lub sij hawm: Oct-13-2022