Technical Solution of X-ray Diffractometer
(Model:DW-Y3500B)
II. Features
High-frequency and high-voltage X-ray source: Solid X-ray generator greatly improves the stability of the measurement results of the XRD;
Long life X-ray tube: metal ceramic X-ray tube, with good heat dissipation, high operating power (40kV×40mA), long service life;
High precision goniometer: It is controlled by optical coding technology. Based on the traditional turboworm transmission technology, incremental optical coding technology is adopted. The optical digital coding can directly read the angle from both arms (invention patent), which greatly improves the accuracy and repeatability of the goniometer. The new generation of direct optical coding systems ensures the accuracy of the goniometer over the life of the instrument through the accurately calibrated Heidenhain optical encoder and trajectory tracking technology.
The goniometer adopts "coaxial &different core" technology (invention patent) to avoid the interference between the arms during scanning, ensuring the accuracy and stability of the goniometer.
Multiple XRD accessories: high temperature, low temperature, multi-function and other XRD accessories installation to achieve "plug and play", software automatic identification control technology, convenient for operators to use the instrument;
Safe X-ray protection: X-ray scattering line protection device is more safe and reliable, the X-ray protection door is forbidden to open when the sample is measured, and double protection can avoid the operator from scattering line radiation under any circumstances.
III. Main parameters
High frequency high voltage solid X-ray generator
Maximum output power: 3kW
Tube voltage: 10 ~ 50KV, 1kV/step
Tube current: 5 ~ 60mA, 1mA/step
Stability of voltage& current: ≤0.005% (when the external voltage fluctuates 10%)
Water circulation cooling system is availble.
Protections for over voltage, over current, over power, lack water are available.
X-ray tube: metal-body ceramic X-ray tube
Focus size: Focus 1×10mm
Standard target: Cu target (other target can be customized)
X-ray tube power: 2.4kW
- High precision goniometer
Goniometer: vertical type,θ/θ,sample is placed horizontally
Using incremental coded reading technology
Diffraction circle radius: 180mm ~ 300mm
Scanning mode: continuous, step-by-step
2θ Measuring range: -110° ~ 168°
Minimum step Angle: 0.0001°
Maximum rotational speed: 20°/s
Diffraction Angle measurement linearity: ≤0.01°
Full spectrum Angle measurement accuracy: ±0.005°
Beam size: 180×180μm
Resolution: ≤0.028° (2θ center)
Repeatability error: ±0.0001°
Angle reproducibility: 0.0001°
Maximum positioning speed: ≤1200°/min
Diffraction angular linearity: the angular deviation of all peaks in the full spectrum does not exceed ±0.01°.
- Detector
Scintillation detector:
It Works with monochromator to effectively remove the Kβ line,
Maximum linear count: ≥5×105CPS,
Spectral resolution: ≤50%.
Curved crystal graphite monochromator:
When testing the sample, a monochromator is required to effectively remove the Kβ line, and the reflection efficiency is ≥28%.
- control and data processing software
Computer: control and data processing software running under the Windows10 operating system.
Application software:
Phase qualitative, quantitative analysis, Kα1, α2 stripping, full spectrum fitting, peak selection fitting, half-height width and grain size calculation, cell measurement, secondary stress calculation, diffraction line index, multiple plotting, 3D plotting, diffraction data calibration, background deduction, quantitative analysis without standard sample, full spectrum fitting (WPF), XRD diffraction pattern simulation.
IV. Overall dimensions of XRD host
1320×1150×1860mm
V. Working condition
1. Working temperature: 10ºC ~ 30ºC.
2. Ambient relative humidity: ≤80%.
3. Power supply: unidirectional, AC 220V, 50HZ, power supply voltage fluctuation does not exceed the rated voltage -10% ~ +10%, power capacity is not less than 5kVA.
4. There should be a good grounding device, grounding resistance is not more than 4Ω.
5. Cooling system: Independent self-circulating refrigeration system, using pure water.
6. The power supply line shall not have arc and high-frequency interference caused by welding machines, high-frequency furnaces and other equipment.
7. The surrounding environment should not have flammable and corrosive gases, and try to avoid dust and vibration.
VI. Protection system
The protection system is safe and reliable, with machine and door interlocking mechanism. When operator open the door, at the same time the shutter stops working. This function can avoid the operator from being exposed to scattered ray radiation. The radiation dose < 0.2μSv/h.
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