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Detection device and detection method for surface distribution of hydroxyl content in quartz glass

A glass hydroxyl and detection equipment technology, applied in the direction of measuring devices, analytical materials, color/spectral characteristic measurement, etc., can solve the inaccurate distribution of OH content in quartz glass, increase the workload and complexity of the detection process, and low reliability, etc. problem, to achieve the effect of saving manpower, saving detection steps and improving accuracy

Active Publication Date: 2018-12-21
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the distribution of OH content in quartz glass obtained by the existing detection method is inaccurate and has low reliability. Moreover, in order to obtain the distribution law of OH in quartz glass, it is necessary to process multiple detection samples, which increases the work of the detection process. volume and complexity

Method used

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  • Detection device and detection method for surface distribution of hydroxyl content in quartz glass
  • Detection device and detection method for surface distribution of hydroxyl content in quartz glass
  • Detection device and detection method for surface distribution of hydroxyl content in quartz glass

Examples

Experimental program
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Effect test

Embodiment 1

[0093] This embodiment provides the extinction coefficient ε of hydroxyl groups in quartz glass at 1.38 μm and 2.22 μm 1.38μm , ε 2.22μm calculation method.

[0094] In this embodiment, the quartz glass is synthetic quartz glass with a thickness of 1 mm.

[0095] In this embodiment, the spectral transmittance curve of quartz glass in the wavelength range of 1000nm to 3200nm is as follows figure 2 shown. figure 2 The baseline spectral transmittance T at the positions of 2.73μm, 2.22μm and 1.38μm 0 See Table 1 for the absorption peak spectral transmittance T.

[0096] Table 1 figure 2 T at the positions of 2.73μm, 2.22μm and 1.38μm 0 and T

[0097]

[0098] In this embodiment, the extinction coefficient ε of the hydroxyl group in quartz glass at 2.73 μm is selected. 2.73μm Value 80.1L·mol -1 cm -1 , calculated according to the second formula, the extinction coefficient ε of the hydroxyl group in quartz glass at 1.38 μm is obtained 1.38μm 0.45Lmol -1 cm -1 ; Ac...

Embodiment 2

[0107] This embodiment provides a non-destructive testing method for hydroxyl content in synthetic quartz glass.

[0108] The thickness of the synthetic quartz glass 1 in this embodiment is 5.25 mm.

[0109] In this embodiment, the spectral transmittance curve of synthetic quartz glass 1 in the wavelength range of 1000nm to 3200nm is as follows image 3 shown.

[0110] If the detection method of hydroxyl content in quartz glass recorded in the prior art GB / T 12442-90 is adopted, since the thickness of synthetic quartz glass 1 in this embodiment is 5.25mm, it has exceeded the thickness of artificial quartz glass specified in this standard by 0.4- 0.7mm, and, by image 3 It can be seen that the synthetic quartz glass 1 of this embodiment cannot display the spectral peak at 2.73 μm, so it cannot be detected by the method described in GB / T 12442-90.

[0111] image 3 The baseline spectral transmittance T at the position of 2.22μm and 1.38μm 0 See Table 2 for the spectral tran...

Embodiment 3

[0116] This embodiment provides a non-destructive testing method for hydroxyl content in synthetic quartz glass.

[0117] In this embodiment, the thickness of the synthetic quartz glass 2 is 11 mm.

[0118] In this embodiment, the spectral transmittance curve of synthetic quartz glass 2 in the wavelength range of 1000nm to 3200nm is as follows Figure 4 shown. Figure 4 The baseline spectral transmittance T at the position of 2.22μm and 1.38μm 0 And the absorption peak spectral transmittance T is shown in Table 3.

[0119] table 3 Figure 4 T at the positions of 1.38μm and 2.22μm in 0 and T

[0120]

[0121] With the extinction coefficient ε obtained in embodiment 1 2.22μm , The baseline spectral transmittance T at the position of 2.22μm 0 and the absorption peak spectral transmittance T are substituted into the first formula described, and the calculations obtain that the hydroxyl content of the synthetic quartz glass 2 in the present embodiment is 1469ppm; the exti...

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Abstract

The invention relates to a detection device and detection method for surface distribution of hydroxyl content in quartz glass. The detection device comprises a spectrophotometer, a sample support frame, a mobile device, a light shielding cover and a computer; and the spectrophotometer is provided with a light path export component, the mobile device is used for driving the sample support frame orthe light path export component to move, the light shielding cover is used for providing a detection space for a sample, and the computer is connected with the spectrophotometer and the mobile device.The detection device can automatically detect surface distribution of the hydroxyl content in to-be-detected quartz glass, and therefore the detection step is simplified; and meanwhile the detectiondevice can directly detect the to-be-detected quartz glass, a thin sample does not need to be prepared, and the accuracy of a detection result is improved.

Description

technical field [0001] The invention relates to the field of glass detection, in particular to a detection device and a detection method for the surface distribution of hydroxyl content in quartz glass. Background technique [0002] Quartz glass is widely used because of its high purity, low thermal conductivity, excellent thermal shock resistance, high deformation temperature and softening temperature, wide optical transmission ability and other comprehensive properties that other materials do not have. It is used in many fields such as electric light source, infrared optics, laser engineering and aerospace engineering. [0003] Quartz glass is made of a single [SiO 4 ], OH is the main impurity component of quartz glass, and is an important factor affecting the performance of quartz glass. When used in the field of electric light sources, high hydroxyl content will seriously affect the service life of electric light sources, so the content of hydroxyl groups should be con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N21/01
CPCG01N21/01G01N21/31
Inventor 王蕾向在奎王慧邵竹锋符博王佳佳
Owner CHINA BUILDING MATERIALS ACAD
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