Mu mbeera ki alumina ceramics ejja kuleeta okwambala?
Alumina Ceramic Structure kintu ekikozesebwa ennyo, abasinga obungi ku bakozesa gwe muddiring’anwa gwayo ogw’omutindo ogw’oku ntikko. Naye, mu nkola entuufu ey’okukozesa, ebitundu by’enzimba ya alumina ceramic tekyewalika byambalibwa, ensonga ezireeta okwambala mu nsengeka nnyingi, zisobola bulungi okuziyiza okwambala ebitundu by’enzimba ya alumina ceramic okuva mu nsonga zino.
Kitegeerekese nti ensonga enkulu mu kwambala ebibumbe bya alumina ceramic ye maanyi ag’ebweru ag’amaanyi. Mu kiseera ky’okukozesa ekintu, bwe kimala okussibwako amaanyi oba okunyigirizibwa, kijja kuleeta okwambala oba okumenya ebizimbe bya alumina ceramic. N’olwekyo, tusaanidde okufuba okwewala okutomera ebintu nga tukola okukendeeza ku kwonooneka.
Ekirala, singa ensengekera ya alumina ceramic ekozesebwa okumala ebbanga eddene, era ejja kufulumya ddiguli emu ey’okwambala, naye kino kintu kya bulijjo, kyetaaga kukyusa kyokka oluvannyuma lw’okwambala okuyitiridde, ekiraga nti obulamu bw’obuweereza bwa alumina ceramic buweddewo.
Okugatta ku ekyo, ensonga z’obutonde ez’awamu era zijja kufuula alumina ceramic structural parts okwambala, SO-ebiyitibwa general environmental factors birina okuba influence ya medium mu butonde, influence y’empewo, influence of temperature, etc., emirundi mingi olw’okumala ebbanga-okukulugguka kw’empewo okw’ekiseera okufuula ensengekera z’enzimba okwambala.
Mu kiseera kye kimu, kiyinza okuba nga kiva ku bucaafu obuva mu butonde, ka kibeere nsonga ki ezireeta okwambala kw’ebitundu by’ebizimbe ebya alumina ceramic, kyetaagisa okuddaabiriza n’okukyusa ebitundu mu budde, awatali kukosa nkola ya bulijjo.
Ebifaananyi bya Alumina Ceramics .
Alumina ceramics zigabanyizibwamu ekika ky’obulongoofu obw’amaanyi n’ekika eky’okubiri ekya bulijjo.
High Purity Alumina Ceramic Series Al2O3 Ebirimu ebisukka mu 99.9% eby’ekintu kya keramiki, olw’ebbugumu lyakyo ery’okusinda waggulu nga 1650-1990℃, obuwanvu bw’amayengo g’okutambuza obwa 1 ~ 6μm, okutwalira awamu nga bikoleddwa mu ndabirwamu ezisaanuuse okudda mu kifo kya platinum crucible; kozesa ekitangaala kyayo eky’okutambuza ekitangaala n’okuziyiza okukulukuta kw’ebyuma nga sodium lamp tube; Kiyinza okukozesebwa nga integrated circuit board ne high frequency insulation material mu by’amasannyalaze.
Ebintu ebya bulijjo ebya alumina byawulwamu porcelain 99, porcelain 95, porcelain 90, porcelain 85 n’ebika ebirala okusinziira ku birimu AL2O3, era oluusi ebirimu bya al2O3 nabyo bigabanyizibwa mu series za alumina ceramics eza bulijjo. Mu byo, ebintu 99 ebya alumina porcelain bye bikozesebwa okukola ekirungo kya crucible eky’ebbugumu eringi, payipu y’ekikoomi etali ya kuziyiza n’okwambala okw’enjawulo-okuziyiza, gamba nga bbeeri za keramiki, ebisiba eby’ekika kya ceramic ne vvaalu z’amazzi; 95 Alumina porcelain esinga kukozesebwa nga ebitundu ebiziyiza okukulukuta n’okwambala; Ekyuma kino ekiyitibwa porcelain 85 kitera okutabulirwamu talc okulongoosa eby’amasannyalaze n’amaanyi g’ebyuma, era nga kisobola okusibirwamu molybdenum, niobium, tantalum n’ebyuma ebirala, ate ebimu bikozesebwa ng’ebyuma ebiwunyiriza eby’amasannyalaze.
1. Obugumu obw’amaanyi .
Nga epimiddwa ekitongole kya Shanghai Institute of Silicate ekya China Academy of Sciences, obugumu bwayo obwa Rockwell bwe buno HRA80-90, obukaluba buno buli mu kyakubiri ku dayimanda, okusinga wala okwambala okuziyiza ekyuma ekiziyiza okwambala n’ekyuma ekitali kizimbulukuse.
2. Okuziyiza okwambala okulungi ennyo .
Obuziyiza bw’okwambala buba bwa mirundi 266 obw’ekyuma kya Manganese ate emirundi 171.5 egy’ekyuma ekisuuliddwa ekinene chromium. Okusinziira ku kunoonyereza kwaffe ku kulondoola bakasitoma okumala emyaka egisukka mu kkumi, mu mbeera y’emu ey’okukola, obulamu bw’okuweereza ebyuma busobola okwongezebwayo waakiri emirundi kkumi.
3. Obuzito obutono .
Densite yaayo eya 3.5g/cm3 eri kitundu kya kyuma kyokka, ekiyinza okukendeeza ennyo omugugu gw’ebyuma.
Ebikulu ebiraga eby’ekikugu eby’ebintu eby’ekika kya alumina ceramics .
Alumina Ceramic Ebisinga oba byenkana 92% .
Densite esinga oba eyenkanawa ne 3.6g /cm3.
Rockwell obukaluba obusinga oba obwenkana 80 HRA .
Amaanyi g’okunyigiriza agasinga oba agenkana 850 MPa .
Obugumu bw’okumenya Kιc obusinga oba obwenkana 4.8Mpa·m1/2.
Amaanyi g’okubeebalama agasinga oba agenkana 290MPa .
Obutambuzi bw’ebbugumu 20W/MK .
Omugerageranyo gw’okugaziya ebbugumu: 7.2×10-6m/mk
