Taarikada dhoobada alumina ee nadiifka ah waa shay tayo sare leh oo si gaar ah loogu talagalay codsiyada warshadaha iyo tignoolajiyada horumarsan. Alaabtan waxa kale oo loo yaqaanaa taarikada dahaadhka dhoobada, taarikada dhoobada ah ee nadiifka ah, iyo taarikada ilaalinta dhoobada alumina. Wax soo saarkeedu wuxuu isticmaalaa budada aluminium ee horumarsan waxayna martaa habab adag oo sinteering si loo hubiyo tayada iyo waxqabadka aad u fiican. Iyada oo leh xasillooni kuleyl oo heer sare ah, guryaha dahaarka korantada, iyo iska caabinta xirashada iyo daxalka, taarikada dhoobadani waa qaybo aan laga maarmi karin oo ku yaal deegaan waxqabad sare leh oo kala duwan.
Dulmar guud ee xaashida dhoobada alumina ee nadiifka sare ah waxay muujineysaa ku-dhaqankeeda ballaaran iyo adkeysigeeda sida walxo shuruudo u baahan. Iyada oo ay ugu wacan tahay awoodda ay u leedahay in ay ilaaliso sharafta qaab dhismeedka heerkul aad u daran iyo culeyska korantada, waxaa si weyn loogu isticmaalaa warshadaha sida elektiroonigga, hawada hawada, baabuurta, iyo wax soo saarka. Isku darka nadiifinta sare iyo naqshadaynta saxda ah ee injineernimada ayaa ka dhigaysa doorasho ku habboon codsiyada halka isku halaynta iyo hufnaanta ay muhiim u yihiin.
Astaamaha ugu muhiimsan ee xaashidan dhoobada ah waxaa ka mid ah kuleyl kuleyl aad u wanaagsan, xoog koronto oo sarreeya, iyo porosity aadka u hooseeya. Guryahani waxay ka dhigaan kuwo ku habboon xaashida dahaadhka dhoobada, si wax ku ool ah u xakameynaya qaybinta kulaylka iyo ka hortagga daadinta korantada. Intaa waxaa dheer, nadiifnimadooda sare waxay hubisaa maqnaanshaha wasakhda waxyeelayn karta waxqabadkooda ama cimrigooda. Taarikada ilaalinta dhoobada alumina waxay sidoo kale caan ku tahay awoodooda makaanikada, taasoo ka dhigaysa inay ku habboon yihiin caqabadaha ilaalinta iyo qaybaha u baahan adag.
"Sharaxaad faahfaahsan oo ku saabsan xaashiyaha dhoobada ah ee alumina nadiifka ah" waxay ku siinaysaa macluumaadka ku saabsan habka wax soo saarkooda. Waraaqahan dhoobada ah waxay ka samaysan yihiin alumina saafi ah (Al2O3), oo leh nadiifin caadi ahaan ka badan 99.5%. Nadiifintan sare waxay hubisaa in maaddadu ay ilaaliso sifooyinka jireed iyo kiimiko xitaa marka lagu jiro xaalado adag. Habka wax soo saarka wuxuu shaqaaleeyaa tignoolajiyada horumarsan sida cadaadiska isostatic iyo heerkulka sare ee sintering si loo sameeyo qaab-dhismeed cufan, isku mid ah oo aan lahayn cillado. Sidaa darteed, xaashiyaha dhoobada ahi waxay leeyihiin xasillooni cabbir heer sare ah iyo iska caabin shoog kulayl ah, oo ku habboon meelo badan oo codsi ah.
Alumina-nadiifinta sare ee xaashida dhoobada ayaa leh xaalado kala duwan oo codsi ah, oo daboolaya warshado badan. Goobta elektiroonigga ah, waxaa loo isticmaalaa sida lakabyada dahaarka ee nidaamyada korantada sare iyo wax soo saarka semiconductor. Goobta hawada sare, waxaa loo isticmaalaa hababka ilaalinta kulaylka iyo taarikada dahaarka. Warshadaha baabuurta, waxay u adeegaan sidii qaybo ka mid ah baytariyada baabuurta korantada iyo korontada qalabka elektarooniga ah. Isticmaalkoodu sidoo kale wuxuu ku fidaa qalabka warshadaha, halkaas oo ay u shaqeeyaan sidii lakabyo ilaalin ah oo ka hortagaya heerkulka sare iyo qulqulka. Haddi ay noqoto deegaanka shaybaadhka ama waxsoosaarka baaxada leh, xaashiyada dhoobada ahi waxay caddeeyaan inay yihiin xal la isku halayn karo oo hufan.
Dib u eegista isticmaalayaashu waxay muujinayaan waxtarka iyo cimri dhererka taarikada dhoobada alumina ee nadiifka ah. Isticmaalayaal badan ayaa ammaana awoodda ay u leeyihiin inay ku ilaaliyaan waxqabadka xaaladaha daran, iyagoo hubinaya isticmaalka muddada dheer. Qaar ayaa sidoo kale ammaanaya fududaynta la-dhexgalka nidaamyada jira sababtoo ah waafaqiddooda hababka wax soo saarka ee kala duwan. Qaar baa xusa saxnaanta cabbirkooda, taas oo u sahlaysa in si siman loo adeegsado meelaha muhiimka ah. Guud ahaan, jawaab-celintan ayaa ka tarjumaysa qaddarinta sare ee tayada badeecada, isku halaynta, iyo waxtarka-qiimaynta.
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
