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NIST Structural Ceramics Database (SCD) Database

NIST Standard Reference Database 30

Last Update to Data Content: 2002

DOI: http://dx.doi.org/10.18434/T4F30D

SCD Citation Number: Z00625

Bibliographic Information

Reference:
"Thermophysical Properties of Sapphire, AlN and MgAl2O4 down to 70 K," St. Burghartz and B. Schulz, Journal of Nuclear Materials, Vol. 212, pp. 1065-1068 (1994), published by Elsevier Science B.V..
Language: English

General Materials Processing Notes

"Well characterized sapphire, aluminum nitride and magnesium aluminum spinel have been used... as well as... polycrystalline aluminum oxide."

Measurement Methods

Laser flash technique
"The thermal conductivity TC was determined by the well known laser flash technique from TC = αcpd, where α is the thermal diffusivity, cp the specific heat capacity at constant pressure, d the density. At temperatures above 300 K an In-Sb detector was used, and below 300 K a liquid He-cooled Ge-Zn detector was used to follow the temperature increase on the rear face of the laser-flash-heated samples. The equipment was checked with NBS reference material 8425 (Poco graphite) resulting in a standard deviation of 3% in the whole temperature range."
Differential scanning calorimetry (DSC)
"The specific heat capacity was measured with a Perkin-Elmer DSC 2, standard deviation 2%. No additional measurement details were noted.
Dilatometry
"The determination of the thermal expansion was performed with a Netzsch differential cryodilatometer type 402 ED... Standard deviation was determined to 2.5%."

Index of Materials and Properties (Click on a selected Material Number to expand material properties menu)

Material Number 1: Al2O3

Material Specification and Properties for Al2O3

Material number 1 of 4
in SCD Citation Number: Z00625
Chemical Class: Oxide
Chemical Family: Al-O
Formula: Al2O3
Informal Name: sapphire
Structure Type: Single Crystal
Process: Crystal Growth

Al2O3

Material number 1 of 4
in SCD Citation Number: Z00625
Density (mass)
Density
 
( g cm-3 )
3.98
Measurement Method: Unknown
Evaluation Status: Unevaluated

Al2O3

Material number 1 of 4
in SCD Citation Number: Z00625
Sound Velocity
Mode
 
  		Angle from
c-axis
( degrees ) 		Sound
Velocity
( km/s )
Longitudinal 0 11.2 ± 0.2
Shear 0 6.12 ± 0.15
Longitudinal 90 11.3 ± 0.2
Shear 90 6.63 ± 0.15
Measurement Method: Unknown
Evaluation Status: Unevaluated

Al2O3

Material number 1 of 4
in SCD Citation Number: Z00625
Specific Heat
Temperature
 
( K ) 		Specific
Heat
( J kg-1 K-1 )
70 37
80 60
88 92
99 128
109 164
118 204
128 239
138 283
147 319
157 362
167 406
176 438
187 482
196 510
205 549
216 585
225 621
235 657
245 680
256 704
265 736
275 756
285 780
294 796
Measurement Method: Differential scanning calorimetry (DSC)
Evaluation Status: Evaluated by acceptance criteria
Cautions:
Data were digitized from Fig. 1 of the reference.

Al2O3

Material number 1 of 4
in SCD Citation Number: Z00625
Thermal Expansion
Angle from
c-axis
( degrees ) 		Temperature
 
( K ) 		Thermal
Expansion
( 10-6 K-1 )
0 72 3.3
0 91 3.5
0 111 3.7
0 130 3.9
0 150 4.1
0 170 4.4
0 193 4.6
0 201 4.7
0 212 4.8
0 225 4.9
0 242 5.1
0 263 5.3
0 273 5.4
0 284 5.6
0 296 5.7
90 71 2.7
90 91 2.9
90 111 3.1
90 131 3.3
90 150 3.5
90 172 3.7
90 192 3.9
90 212 4.1
90 231 4.3
90 243 4.5
90 253 4.6
90 272 4.8
90 281 4.8
90 293 5.0
Measurement Method: Dilatometry
Evaluation Status: Evaluated by acceptance criteria
Cautions:
Values were derived from data digitized from Fig. 2 of the reference.
Material Number 2: Al2O3

Material Specification and Properties for Al2O3

Material number 2 of 4
in SCD Citation Number: Z00625
Chemical Class: Oxide
Chemical Family: Al-O
Formula: Al2O3
Informal Name: alumina
Structure Type: Polycrystalline
Process: Sintering

Al2O3

Material number 2 of 4
in SCD Citation Number: Z00625
Density (mass)
Density
 
( g cm-3 )
3.90
Measurement Method: Unknown
Evaluation Status: Unevaluated

Al2O3

Material number 2 of 4
in SCD Citation Number: Z00625
Sound Velocity
Mode
 
  		Angle from
c-axis
( degrees ) 		Sound
Velocity
( km/s )
Longitudinal --- 10.4 ± 0.2
Shear --- 6.27 ± 0.15
Measurement Method: Unknown
Evaluation Status: Unevaluated

Al2O3

Material number 2 of 4
in SCD Citation Number: Z00625
Specific Heat
Temperature
 
( K ) 		Specific
Heat
( J kg-1 K-1 )
70 37
80 60
88 92
99 128
109 164
118 204
128 239
138 283
147 319
157 362
167 406
176 438
187 482
196 510
205 549
216 585
225 621
235 657
245 680
256 704
265 736
275 756
285 780
294 796
Measurement Method: Differential scanning calorimetry (DSC)
Evaluation Status: Evaluated by acceptance criteria
Cautions:
Data were digitized from Fig. 1 of the reference.

Al2O3

Material number 2 of 4
in SCD Citation Number: Z00625
Thermal Expansion
Angle from
c-axis
( degrees ) 		Temperature
 
( K ) 		Thermal
Expansion
( 10-6 K-1 )
--- 71 2.9
--- 91 3.1
--- 111 3.3
--- 131 3.5
--- 150 3.7
--- 173 3.9
--- 191 4.1
--- 211 4.3
--- 231 4.5
--- 243 4.6
--- 271 4.9
--- 283 5.0
--- 295 5.1
Measurement Method: Dilatometry
Evaluation Status: Evaluated by acceptance criteria
Cautions:
Data were digitized from Fig. 2 of the reference.
Material Number 3: AlN

Material Specification and Properties for AlN

Material number 3 of 4
in SCD Citation Number: Z00625
Chemical Class: Nitride
Chemical Family: Al-N
Formula: AlN
Informal Name: aluminum nitride
Structure Type: Polycrystalline
Process:

AlN

Material number 3 of 4
in SCD Citation Number: Z00625
Density (mass)
Density
 
( g cm-3 )
3.24
Measurement Method: Unknown
Evaluation Status: Unevaluated

AlN

Material number 3 of 4
in SCD Citation Number: Z00625
Sound Velocity
Mode
 
  		Angle from
c-axis
( degrees ) 		Sound
Velocity
( km/s )
Longitudinal --- 10.88 ± 0.2
Shear --- 6.43 ± 0.15
Measurement Method: Unknown
Evaluation Status: Unevaluated

AlN

Material number 3 of 4
in SCD Citation Number: Z00625
Specific Heat
Temperature
 
( K ) 		Specific
Heat
( J kg-1 K-1 )
70 52
80 84
89 108
98 144
109 172
118 211
128 227
128 247
137 255
139 271
147 303
157 343
167 386
176 418
186 446
196 478
205 525
215 549
226 573
235 621
245 641
256 677
265 697
275 724
285 740
294 764
Measurement Method: Differential scanning calorimetry (DSC)
Evaluation Status: Evaluated by acceptance criteria
Cautions:
Data were digitized from Fig. 1 of the reference.

AlN

Material number 3 of 4
in SCD Citation Number: Z00625
Thermal Expansion
Angle from
c-axis
( degrees ) 		Temperature
 
( K ) 		Thermal
Expansion
( 10-6 K-1 )
--- 72 1.3
--- 91 1.5
--- 111 1.6
--- 131 1.7
--- 150 1.8
--- 171 2.0
--- 191 2.1
--- 211 2.2
--- 231 2.3
--- 252 2.5
--- 272 2.6
--- 293 2.7
Measurement Method: Dilatometry
Evaluation Status: Evaluated by acceptance criteria
Cautions:
Data were digitized from Fig. 2 of the reference.
Material Number 4: MgAl2O4

Material Specification and Properties for MgAl2O4

Material number 4 of 4
in SCD Citation Number: Z00625
Chemical Class: Oxide
Chemical Family: Mg-Al-O
Formula: MgAl2O4
Informal Name: magnesium aluminate
Structure Type: Single Crystal
Process: Crystal Growth

MgAl2O4

Material number 4 of 4
in SCD Citation Number: Z00625
Density (mass)
Density
 
( g cm-3 )
3.57
Measurement Method: Unknown
Evaluation Status: Unevaluated

MgAl2O4

Material number 4 of 4
in SCD Citation Number: Z00625
Sound Velocity
Mode
 
  		Angle from
c-axis
( degrees ) 		Sound
Velocity
( km/s )
Longitudinal --- 10.01 ± 0.2
Shear --- 5.27 ± 0.15
Measurement Method: Unknown
Evaluation Status: Unevaluated

MgAl2O4

Material number 4 of 4
in SCD Citation Number: Z00625
Specific Heat
Temperature
 
( K ) 		Specific
Heat
( J kg-1 K-1 )
69 68
79 104
89 132
98 160
109 207
118 239
128 287
137 331
147 366
157 406
167 454
175 489
186 529
195 561
206 601
217 640
225 668
235 696
245 724
255 752
265 780
274 800
284 820
293 836
Measurement Method: Differential scanning calorimetry (DSC)
Evaluation Status: Evaluated by acceptance criteria
Cautions:
Data were digitized from Fig. 1 of the reference.

MgAl2O4

Material number 4 of 4
in SCD Citation Number: Z00625
Thermal Conductivity
Angle from
c-axis
( degrees ) 		Temperature
 
( K ) 		Thermal
Conductivity
( W m-1 K-1 )
--- 101 68
--- 101 75
--- 104 79
--- 101 92
--- 101 99
--- 120 95
--- 123 88
--- 120 80
--- 130 80
--- 137 72
--- 121 70
--- 134 70
--- 134 68
--- 150 68
--- 153 66
--- 150 58
--- 153 55
--- 202 45
--- 202 36
--- 254 34
--- 254 29
--- 293 27
--- 299 20
--- 300 15
--- 303 23
--- 364 16
--- 374 17
--- 484 13
--- 577 12
--- 680 11
Measurement Method: Laser flash technique
Evaluation Status: Evaluated by acceptance criteria
Cautions:
Data were digitized from Fig. 6 of the reference.

MgAl2O4

Material number 4 of 4
in SCD Citation Number: Z00625
Thermal Expansion
Angle from
c-axis
( degrees ) 		Temperature
 
( K ) 		Thermal
Expansion
( 10-6 K-1 )
--- 72 3.1
--- 91 3.3
--- 111 3.5
--- 140 3.8
--- 161 4.0
--- 181 4.2
--- 211 4.5
--- 223 4.7
--- 233 4.8
--- 243 4.9
--- 272 5.2
--- 293 5.4
--- 293 5.4

Measurement Method: Dilatometry
Evaluation Status: Evaluated by acceptance criteria
Cautions:
Data were digitized from Fig. 2 of the reference.