Raws li ib tug tseem ceeb muaj kev tiv thaiv sib xyaw,alumina tej hub npastau siv dav hauv ntau thaj teb vim lawv ua tau zoo heev. Yog li, lawv puas ruaj khov? Cov lus teb yog - tsis yog tsuas yog lawv ruaj khov, tab sis lawv kuj yog cov kev daws teeb meem uas nyiam rau ntau yam kev ua haujlwm hnyav.
ICov. Vim li cas alumina tej hub npas thiaj li ruaj khov?
Ua kom tawv tawv
Alumina Ceramic muaj lub mohs tawv ntawm 9, thib ob tsuas yog pob zeb diamond. Qhov no txhais tau tias nws yog qhov tseeb heev li lawm- Thiab kev tswj hwm nws cov duab tsawg kawg nkaus thaum muaj hlau, minerals, thiab lwm yam ntaub ntawv.
Hnav Zoo Tshaj Kuj
Qhov no yog nws cov ntsiab lus zoo dua. Nyob rau hauv high -}}} kev sib txhuam, xws li cov neeg pom kev ruaj khov thiab khav theeb ib qho kev pab cuam deb dhau ntawm cov hlau thiab iav pob.
Muaj zog compressive zog
Alumina tej hub npas tuaj yeem tiv taus cov khoom tseem ceeb thiab kev cuam tshuam tsis muaj deformation lossis tawg. Txawm nyob rau hauv cov nra hnyav hauv cov cuab yeej loj, lawv tuav cov qauv txheej txheem kev ncaj ncees thiab ua haujlwm.
Zoo heev corrosion
Alumina yog qhov sib txuas ruaj khov, muab cov tshwj xeeb ua rau muaj zog acids, hauv paus, thiab cov kuab tshuaj organic. Nws yeej tsis xeb lossis tshuaj tiv thaiv cov ntaub ntawv nrog cov ntaub ntawv nws ua haujlwm, ua kom nws ua haujlwm ruaj khov thiab ntev}}}}}}}}}}} kev lag luam thiab cov tshuaj.
Zoo heev - kub tsis kam
Alumina tej kev ceramic pob tswj lawv lub cev nqaij daim tawv thiab tshuaj lom neeg txawm nyob ntawm qhov kub tshaj 1600 degree, tsis muaj oxidizing lossis softening. Lawv haum rau siab - kub sib tsoo thiab ua cov ntaub ntawv txhawb nqa nyob rau hauv high {}}} qhov chaw ib puag ncig.
'Cov. Kev sib piv ruaj khov nrog lwm cov ntaub ntawv
|
tus yam ntxwv |
Alumina tej hub npas |
Hlau Pob |
Iav hlaws dai / quartz hlaws dai |
|
kev nyuaj |
Siab heev (9 ntawm Mohs Nplai) |
Siab |
Nruab nrab rau siab |
|
Hnav Tsis kam |
Zoo heev, lub neej ntev heev |
Zoo, tab sis yuav hnav thiab paug cov khoom |
Nruab nrab, taus thiab luv npaum lifespan |
|
Corrosion Kuj |
Zoo heev, tsis txhob xeb |
Pluag, yooj yim rau corrode thiab xeb |
Zoo |
|
Cov Kub Kub Kuj |
Zoo tshaj |
Pluag, yuav oxidize thiab muag muag ntawm qhov kub |
Pluag, softens ntawm qhov kub |
|
Cov khoom tsis huv |
Tsawg heev, kom paub cov khoom siv huv |
Siab, Hlau Shavings Kov cov khoom |
Nruab nrab, tej zaum yuav yog qhov tsis huv tom qab crushing |
|
Muaj cov xwm txheej muaj feem xyuam |
Siab hardness, siab purity, corrosive cov ntaub ntawv |
Kev sib tsoo txhav sib tsoo, qis tsis muaj kev xav tau |
Kev sib tsoo zoo ntawm cov viscosity tsawg thiab cov ntaub ntawv mos |
III. "Qiv zog tsis tshua muaj zog (kev txwv)
Txawm hais tias lawv tshwj xeeb depability,alumina tej hub npaskuj muaj qhov tsis muaj zog:
Brittleness: Qhov no yog qhov teeb meem uas muaj cov khoom siv ceramic. Thaum lawv muab lub zog compressive siab, lawv tsis cuam tshuam kev cuam tshuam thiab flexural lub zog. Lawv tuaj yeem tawg lossis tawg yog tias muaj kev cuam tshuam rau kev cuam tshuam loj lossis poob qis ntawm qhov chaw siab. Yog li ntawd, zam kev co co tes thaum xub tuav thiab siv.
Tsis tsim nyog rau cov kev thov hnyav: Rau cov haujlwm sib tsoo: rau kev cuam tshuam loj heev, ntau dua cov khoom siv hlau lossis cov pob hlau yuav haum.
