Tiirarka dhoobada alumina ee nadiifka ah ee sarreeya ayaa ah qayb tayo sare leh oo si gaar ah loogu talagalay codsiyada warshadaha iyo sayniska ee horumarsan. Alaabtan waxaa sidoo kale loo yaqaannaa saafiga sare ee alumina ceramic core ama xudunta dhoobada alumina saafiga ah. Wax soo saarkeedu waa aluminium saafi ah oo sarreeya, waxayna ku soo bandhigi kartaa waxqabad heersare ah deegaan qallafsan. Tilmaamaha ugu sarreeya ee maaddadan ayaa ka dhigaya doorasho ku habboon codsiyada u baahan xasilloonida kulaylka, dahaarka korantada, iyo caabbinta kiimikada.
Naqshadeynta tiirarka dhoobada alumina ee nadiifka sare ah waxay ujeedadeedu tahay in la hubiyo tayada xasilloon iyo kalsoonida. Waxaa la soo saaray iyada oo loo marayo habka wax soo saarka saxda ah, si wax ku ool ah u yareeya wasakhda, taasoo keentay walxo leh cufnaanta sare, porosity hooseeya, iyo xoog farsamo oo aad u fiican. Sifooyinkan ayaa muhiim u ah ilaalinta sharafta qaabdhismeedka marka ay jiraan xaalado aad u daran. Hadday tahay wax-soo-saarka semiconductor, injineernimada saxda ah, ama codsiyada heerkulka sare, xudunta dhoobada ayaa bixin karta cimri dhererka lagama maarmaanka ah iyo waxqabadka.
Mid ka mid ah sifooyinka ugu muhiimsan ee alaabtan ayaa ah nadiifnimadeeda aadka u sarreeya, sida caadiga ah oo leh maaddo aluminium ah oo ka badan 99.5%. Tani waxay ka dhigaysaa mid ku habboon deegaannada looga baahan yahay xakamaynta wasakhda adag. Xuddunta dhoobada ayaa leh heerkul aad u fiican, taas oo ka dhigaysa kulayl wax ku ool ah hababka warshadaha kala duwan. Intaa waxaa dheer, dhaqan la'aanteedu waxay xaqiijisaa hawlgalka badbaadada leh ee codsiyada korantada waxayna yaraynaysaa halista wareegyada gaaban ama cilladaha kale.
Koofiyadaha dhoobada alumina ee nadiifka ah ee sarreeya waxay ku yimaadaan qaabab iyo cabbirro kala duwan si ay u buuxiyaan shuruudaha naqshadeynta ee kala duwan. Haddii aad u baahan tahay qaab cylindrical ah oo caadi ah ama qaabayn la habeeyey, alaabtan waxaa loo habeyn karaa iyadoo loo eegayo baahiyahaaga gaarka ah. Daaweynta dusha sare ee siman iyo cabbirada saxda ah waxay ka caawiyaan inay si fiican ula midoobaan nidaamyada adag, taas oo kor u qaadeysa waxtarka iyo waxqabadka guud.
Alaabtan waxaa si weyn looga isticmaalaa warshado badan, oo ay ku jiraan hawada sare, baabuurta, elektiroonigga, iyo qalabka caafimaadka. Warshadaha semiconductor-ka, waa qayb muhiim ah oo ka mid ah habka waferka iyo nidaamyada lithography. Goobta qalabka falanqaynta, waxay bixisaa qaab-dhismeed taageero oo lagu kalsoonaan karo oo loogu talagalay qaybaha xasaasiga ah. Kala duwanaanshaheeda ayaa ka dhigaya mid awood u leh
Iyaga oo ka dhex muuqda noocyo kala duwan, koofiyadaha dhoobada alumina ee nadiifka ah ayaa la doorbidaa sababtoo ah isku dhafka xoogga, nadiifnimada, iyo isku-dhafka. Si ka duwan qalabka kale ee dhoobada, waxay leedahay sifooyin dheellitiran, taas oo ka dhigaysa mid ku habboon codsiyada saxda ah iyo cadaadiska sare. La jaanqaadkeeda hababka wax soo saarka ee kala duwan ayaa sii kordhisa rafcaankeeda, taas oo u oggolaanaysa inay si aan kala go 'lahayn u dhexgalaan khadadka wax soo saarka ee jira.
Isticmaalayaasha raadinaya koofiyadaha dhoobada waara iyo waxqabadka sare, tiirarka dhoobada alumina ee nadiifka ah ee nadiifka ah ayaa ah doorasho aad u fiican. Qalabkooda horumarsan iyo naqshadeynta injineernimada saxda ah waxay hubinayaan inay la kulmaan heerarka tayada iyo shaqeynta ugu sarreeya. Haddii aad ku hawlan tahay cilmi-baadhis, horumarin, ama shaqo-soo-saar, badeecadani waxay ku siin kartaa isku halaynta iyo waxqabadka loo baahan yahay si loo gaaro natiijooyin wanaagsan.
Maaddaama ay tignoolajiyadu sii socoto inay horumarto, baahida loo qabo qaybaha dhoobada tayada sare leh sida kuwa saafiga ah ee alumina ah ee dhoobada dhoobada ah ayaa la filayaa inay kordho. Awooddeeda u adkeysiga cadaadiska iyada oo la ilaalinayo sharafta qaabdhismeedka ayaa ka dhigaysa qayb muhiim ah nidaamyada mustaqbalka. Iyadoo hal-abuurnimada joogtada ah ee sayniska qalabka, alaabtani waxay sii wadi doontaa inay door muhiim ah ka ciyaarto horumarinta mustaqbalka ee codsiyada warshadaha iyo sayniska.
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
|
ALUMINA budada TECH XOGTA
|
ITEM
|
LS-110
|
LS-120
|
LS-130
|
LS-110F
|
LS-220
|
LS-210
|
|
LOI(％)
|
0.02
|
0.02
|
0.05
|
0.08
|
0.03
|
0.01
|
|
Na2O(％)
|
0.05
|
0.04
|
0.03
|
0.05
|
0.07
|
0.08
|
|
SiO2(％)
|
0.07
|
0.07
|
0.07
|
0.09
|
0.02
|
0.02
|
|
Fe2O3(％)
|
0.03
|
0.03
|
0.03
|
0.03
|
0.02
|
0.02
|
|
Al2O3(％)
|
99.9
|
99.9
|
99.9
|
99.9
|
99.9
|
99.9
|
|
average grain diameter(um)
|
1.7
|
2.1
|
2.2
|
1.1
|
2.7
|
2.9
|
|
αgrain diameter(um)
|
1-2
|
1-3
|
2-4
|
1-2
|
2-3
|
3-5
|
|
BET Surface Area(m2/g)
|
1.9
|
1.4
|
1.4
|
3.2
|
1.6
|
0.9
|
|
Pressure-induced volume density(g/cm3)*
|
2.22
|
2.27
|
2.31
|
2.29
|
2.22
|
2.32
|
|
Forming density(g/cm3)**
|
2.13
|
2.20
|
2.23
|
2.33
|
2.17
|
2.30
|
|
Sintering volume density(g/cm3)**
|
3.78
|
3.79
|
3.78
|
3.89
|
3.81
|
3.77
|
|
Line collection efficiency(％)
|
18.0
|
17.2
|
16.7
|
15.7
|
17.5
|
15.3
|
Kala xiriir Hada
