Nadiifinta sareeysa ee alumina caarada dhoobada ah ayaa ah xal dhejis heersare ah oo si gaar ah loogu talagalay codsiyada waxqabadka sare leh, halkaas oo adkeysiga, saxnaanta, iyo isku halaynta ay yihiin kuwa ugu muhiimsan. Waxqabadku maaha mid ka hooseeya kan Zirconia ceramic & Aluminium Nitride ceramic. Alaabtani waxay ka samaysan tahay maaddooyinka dhoobada sare leh, isku darka xoogga alumina-fasalka warshadaha iyo injineernimada saxda ah ee looga baahan yahay jawi adag. Muraayadyada dhoobada alumina ee waara waxay gaadhaan dheelitirnaan aad u fiican oo u dhexeeya xoogga farsamada iyo iska caabbinta kiimikada, taas oo ka dhigaysa doorasho ku habboon warshadaha sida hawada, baabuurta, caafimaadka, iyo wax soo saarka semiconductor. Guryohooda gaarka ah waxay awood u siinayaan inay u adkeystaan heerkulka aadka u daran, daxalka, iyo xirashada, hubinta waxqabadka muddada dheer iyo shuruudaha dayactirka ugu yar.
Qalabka alumina ee loo isticmaalo alaabtan si taxadar leh ayaa loo doortay, oo nadiif ah sida caadiga ah ka badan 99.5%, taas oo kor u qaadeysa sharafteeda qaabdhismeed waxayna yareyneysaa khatarta wasakheynta codsiyada xasaasiga ah. Tani waxay ka dhigaysaa boolal sax ah oo dhoobada ah doorashada la door bidayay ee bay'adaha leh shuruudaha nadiifnimada walxaha adag. Kaashatooyinkani waxay ilaalin karaan qaabkooda oo ay ku shaqeeyaan xaalado adag, haddii loo isticmaalo foornada kuleylka sarreeya, mashiinnada saxda ah, ama qalabka shaybaarka. Dabeecaddooda anshax-marintu waxay sidoo kale ka dhigaysaa inay ku habboon yihiin codsiyada korantada iyo elektiroonigga ah ee u baahan dahaarka.
Mid ka mid ah sifada muhiimka ah ee nadiifinta sare ee alumina dhoobada dhoobada ayaa ah awooda ay ku ilaalinayaan xasiloonida cabbirka waqti ka dib. Si ka duwan biraha dhaqameed ee laga yaabo in ay daxaloobaan ama beddelaan cadaadis, boolal dhoobadani waxay sii haysanayaan qaabkooda iyo shaqadooda asalka ah. Habkani wuxuu si gaar ah qiimo ugu leeyahay codsiyada u baahan toosin sax ah iyo dulqaad adag. Naqshado dhoobo ah oo sax ah ayaa lagu soo saaray iyadoo la adeegsanayo tignoolajiyada sintering horumarsan, hubinta cufnaanta isku midka ah iyo porosity aadka u hooseeya, taas oo sii kordhinaysa hantidooda farsamada iyo nolosha adeegga.
Naqshadeynta muraayadaha dhoobada aluminium ee raagaya ayaa loo hagaajiyay fududaynta rakibidda iyo hagaajinta sugan. Waxay ku yimaadaan noocyo kala duwan oo dun iyo cabbirro kala duwan si ay u daboolaan baahiyo codsi oo kala duwan waxayna yihiin doorasho ku habboon injineerada iyo farsamayaqaannada. Daawaynta dusha sare ee siman ma aha oo kaliya inay wanaajiso bilicda laakiin sidoo kale waxay yaraynaysaa halista abuuritaanka walxaha, taas oo muhiim u ah deegaanka nadiifka ah. Intaa waxaa dheer, dabeecadda khafiifka ah ee ceramics, marka la barbar dhigo biraha, waxay awood u siinaysaa dhimista miisaanka guud ee nidaamka iyada oo aan la hurin xoogga iyo waxqabadka.
ALUMINA CERAMIC TECH XOGTA
|
ITEM
|
UNIT
|
99.9 ALUMINA
|
|
Density
|
G/cm3
|
3.94
|
|
Bending Resistance
|
Mpa
|
500
|
|
Compressive Strength
|
Mpa
|
3300
|
|
Elasticity Modulus
|
Gpa
|
400
|
|
Shock Strength
|
Mpam/2
|
5.2
|
|
Vaporization Coefficient
|
M
|
12
|
|
Vickers Hardness
|
HV0.5
|
2000
|
|
Thermal Expansivity
|
10-6K-1
|
8.0
|
|
Conductivity
|
W/MK
|
28
|
|
Thermal Shock Resistance
|
AT℃
|
280
|
|
Maximum Service Temperature
|
℃
|
1750
|
|
20℃ Volume Resistance
|
Ω
|
≥1015
|
|
Dielectric Strength
|
KV/mm
|
30
|
|
Apparent Porosity
|
%
|
0
|
|
Permittivity
|
Er
|
10
|
|
Dielectric Loss Angle
|
tanδ
|
0.001
|