蓝宝石比热

Thermal Analysis & Rheology THERMAL APPLICATIONS NOTE Sapphire Specific Heat Capacity Literature Values Specific heat capacity measurements by DSC require the use of a well-characterized reference material (usually sapphire) to obtain results. The table below summarizes specific heat capacity data (literature values) for sapphire as a function of temperature. These values can be used in the required calculations. Temperature Specific Heat Temperature Specific Heat oC K J/goC oC K J/goC -183.15 90 0.0949 126.85 400 0.9423 -173.15 100 0.1261 136.85 410 0.9545 -163.15 110 0.1603 146.85 420 0.9660 -153.15 120 0.1968 156.85 430 0.9770 -143.15 130 0.2349 166.85 440 0.9875 -133.15 140 0.2739 176.85 450 0.9975 -123.15 150 0.3134 186.85 460 1.0070 -113.15 170 0.3526 196.85 470 1.0161 -103.15 170 0.3913 206.85 480 1.0247 -93.15 180 0.4291 216.85 490 1.0330 -83.15 190 0.4659 226.85 500 1.0409 -73.15 200 0.5014 236.85 510 1.0484 -63.15 210 0.5356 246.85 520 1.0557 -53.15 220 0.5684 256.85 530 1.0627 -43.15 230 0.5996 266.85 540 1.0692 -33.15 240 0.6294 276.85 550 1.0756 -23.15 250 0.6579 286.85 560 1.0817 -13.15 260 0.6848 296.85 570 1.0876 -3.15 270 0.7103 306.85 580 1.0932 0.00 273.15 0.7180 316.85 590 1.0987 6.85 280 0.7343 326.85 600 1.1038 16.85 290 0.7572 336.85 610 1.1089 26.85 300 0.7788 346.85 620 1.1137 36.85 310 0.7994 356.85 630 1.1183 46.85 320 0.8188 366.85 640 1.1228 56.85 330 0.8373 376.85 650 1.1271 66.85 340 0.8548 386.85 660 1.1313 76.85 350 0.8713 396.85 670 1.1353 86.85 360 0.8871 406.85 680 1.1393 96.85 370 0.9020 416.85 690 1.1431 106.85 380 0.9161 426.85 700 1.1467 116.85 390 0.9296 446.85 720 1.1538 TN-8 Temperature Specific Heat Temperature Specific Heat oC K J/goC oC K J/goC 466.85 740 1.1604 806.85 1080 1.2383 486.85 760 1.1667 826.85 1100 1.2417 506.85 780 1.1726 846.85 1120 1.2451 526.85 800 1.1783 866.85 1140 1.2484 546.85 820 1.1837 886.85 1160 1.2516 566.85 840 1.1888 906.85 1180 1.2548 586.85 860 1.1937 926.85 1200 1.2578 606.85 880 1.1985 976.85 1250 1.2653 626.85 900 1.2030 1026.85 1300 1.2724 646.85 920 1.2074 1076.85 1350 1.2792 666.85 940 1.2117 1126.85 1400 1.2856 686.85 960 1.2159 1176.85 1450 1.2917 706.85 980 1.2198 1226.85 1500 1.2975 726.85 1000 1.2237 1276.85 1550 1.3028 746.85 1020 1.2275 1326.85 1600 1.3079 766.85 1040 1.2312 1376.85 1650 1.3128 786.85 1060 1.2348 Table taken from D. A. Ditmars, et. al., J. Res. Nat. Bur. Stand., 87, (2), 159-163 (1982). The values in the table were determined by Ginnings and Furukawa of the National Bureau of Standards on aluminum oxide in the form of synthetic sapphire (corundum). The sapphire pieces passed a #10 sieve but were retained by a #40 sieve, and had 99.98 to 99.99 % purity by weight. Heat capacity values below the experimental range were obtained by extrapolation of the Debye equation fitted to the experimental value at the lowest temperature. The units J/g- mole are absolute joules per degree per gram mole (molecular weight - 101.9613) at a constant pressure of 1 atmosphere (100 Pa). TA Instruments S.A.R.L. Paris, France Telephone: 33-01-30489460 Fax: 33-01-30489451 TA Instruments, Inc. 109 Lukens Drive New Castle, DE 19720 Telephone: (302) 427-4000 Fax: (302) 427-4001 For more information or to place an order, contact: TA Instruments, Ltd. Leatherhead, England Telephone: 44-1-372-360363 Fax: 44-1-372-360135 TA Instruments N.V./S.A. Gent, Belgium Telephone: 32-9-220-79-89 Fax: 32-9-220-83-21 TA Instruments GmbH Alzenau, Germany Telephone: 49-6023-30044 Fax: 49-6023-30823 TA Instruments Japan K.K. Tokyo, Japan Telephone: 813-5434-2771 Fax: 813-5434-2770 TN-8A Thermal Analysis & Rheology A SU BS IDIARY OF WATE R S COR PORATION Internet: http://www.tainst.com