국가희소금속센터

○ 특징
다양한 형태의 시료에 대한 정확한 열전도도 및 열확산율 측정가능한 열전도도 분석기
○ 열전도도 분석기는 액체, 분말, 고형시료 등의 열전도도 및 열확산율을 측정하는 장비로서, Xenon Flash lamp를 이용하여 열전도도를 측정하는 방법 중 열선법, 열류법에 비하여 측정범위가 넓으며, 각 시료는 가열로에 의해 등온된 시편은 제논 및 레이져의 펄스 에너지 및 펄스 넓이의 출력 하에 온도상승이 되어지고 이 온도상승은 적외선 검출기(InSb)에 의해 검출하는 측정 및 분석을 가능하게 함.

○ 따라서 이러한 열전도도 측정 장비는 다양한 형태의 시료에 대하여 열전도도 및 열확산율 측정이 가능하고, 적외선 검출기에 의한 측정의 정밀도 매우 뛰어나므로, 높은 사용빈도 예측할 수 있으며, 열전도도 분석 장비를 활용한 희소금속 관련 시험/분석을 정밀하게 측정할 수 있으며, 희소금속 관련 전문기업의 신뢰성 시험/분석 평가지원 등에 장비를 활용하고자 함.
○ 구성 및 성능
A. Feature :
Xenon flash instrument for measuring thermal diffusivity & specific heat

B. System configuration
1. Instrument fully automated system
2. Refrigerated bath circulator
3. Basic windows based software

C. Specification :
1. Measuring parts
1) Temp. range : ambient to 300°C or more
2) Alignment : vertical set-up with direct alignment
3) Integrated sample changer : measure up to four samples in one test
4) Diffusivity measuring range : 0.01 to 1000 mm2/s
5) Conductivity measuring range : 0.01 to 2000 W/mK
6) Thermal diffusivity repeatability : +/- 3% or better (for most sample)
7) Specific repeatability : +/-5% or better (for most sample)
8) Thermal diffusivity accuracy : +/- 5% or better (for most sample)
9) Specific accuracy : +/- 5% or better (for most sample)
10) Minimum sample thickness : 0.02 mm or thinner
11) Maximum sample thickness : 8 mm or thicker
12) IR Source : Xenon Flash Lamp
13) Wavelength : 150 … 2000 nm
14) IR detector speed : 1 MHz
15) Pulse energy : up to 10 Joules
16) Software selectable pulse energy control
17) Pulse length : 0.1 - 0.5 ms
18) Software selectable pulse length control
19) Pulse width : 100, 250, 450 μs
20) Data acquisition speed : 500kHz
21) Finite pulse width correction
22) Simultaneous finite pulse heat loss correction
23) Simultaneous finite pulse length correction
24) Software selectable pulse width control
25) Software selectable pulse length control
26) Specific heat measurement : heat loss and laser power corrected specific calibration
27) IR sensor type : InSb IR Detector with integral dewar
28) Sample size : up to 25.4 mm x 25.4 mm diameter, or 10 mm square
29) Special liquid / paste sample measuring system available
30) Number of samples : up to 4
31) MTXfunction:surfacescanneravailable
Scanning range : 50 mm x 50 mm
Resolution : 0.1 mm
32) Circulator stability : +/- 0.05 K or better

2. Software
1) MS Windows Xp, Vista, 7 operated software
2) graphical operating surface, pull-down menu technique, mouse support
3) calculation of thermal diffusivity for different marginal conditions/models
4) Standard correction model : adiabatically, Cowan, radiation correction
5) Advanced correction model : Improved Cape-Lehman with pulse correction
6) 2 layer composites2 and 3 layer models
7) Inplane Test
8) Specific heat analysis with comparative technique
9) Presentation of the curve of temperature rise
10) Presentation of the theoretic model curve
11) Presentation of the temperature/thermal diffusivity curve
12) Storage of the imported measuring data and measuring results in a data

3. Accessories
1) Sample holder set (4 pcs.), 12.7 mm, round 1 set
2) Reference sample, Pyroceram 9606, Ø 12.7 x 2 mm 1 ea

D. Remarks
1. All maintenance and repair should be performed by domestic engineer after warranty period without any extra traveling cost 5Kw