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Sample processing method for observing nuclear silver-indium-cadmium control rod metallographic structure

A technology for metallographic structure and sample processing, which is applied in the field of sample processing for observing the metallographic structure of nuclear-grade silver-indium-cadmium control rods, and achieves the effect of easy operation

Active Publication Date: 2011-10-05
西安汉唐分析检测有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no literature report on the metallographic structure display method of nuclear grade silver-indium-cadmium control rods at home and abroad

Method used

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  • Sample processing method for observing nuclear silver-indium-cadmium control rod metallographic structure
  • Sample processing method for observing nuclear silver-indium-cadmium control rod metallographic structure
  • Sample processing method for observing nuclear silver-indium-cadmium control rod metallographic structure

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Experimental program
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Effect test

Embodiment 1

[0017] For nuclear-grade silver-indium-cadmium control rod material samples with a specification of Φ6, a plane is machined first, and then 150 # , 700 # , 1000 # The metallographic water sandpaper is used for grinding, and the ground sample is rinsed with clean water, and then polished on a polishing machine. The samples after polishing are selected from 100mlK 2 Cr 2 o 7 Saturated solution, 1mlH 2 SO 4 Reagent consisting of 1 ml saturated NaCl solution with H 2 After O is mixed, wipe the sample, the mixing volume ratio is 1:6, and the wiping time is 2S. After the erosion is completed, the NaOH solution with a mass percentage concentration of 5% is used to wipe the sample, and the wiping time is 2S. Finally, a clear metallographic structure of nuclear-grade silver-indium-cadmium control rod samples was observed, see figure 1 .

Embodiment 2

[0019] For nuclear-grade silver-indium-cadmium control rod material samples with a specification of Φ7, a plane is machined first, and then 150 # , 700 # , 1000 # Metallographic water sandpaper is used for grinding step by step, and the ground sample is rinsed with clean water, and then polished on a polishing machine. The sample after polishing is selected from 100mlK 2 Cr 2 o 7 Saturated solution, 3mlH 2 SO 4 Reagent consisting of 2 ml saturated NaCl solution with H 2 After O mixing, wipe the sample, the mixing volume ratio is 1:8, and the wiping time is 4S. After the erosion is completed, the NaOH solution with a mass percentage concentration of 6% is used to wipe the sample, and the wiping time is 3S. Finally, a clear metallographic structure of nuclear-grade silver-indium-cadmium control rod samples was observed, see figure 2 , image 3 .

Embodiment 3

[0021] For nuclear-grade silver-indium-cadmium control rod material samples with a specification of Φ10, a plane is machined first, and then 150 # , 700 # , 1000 # Metallographic water sandpaper is used for grinding step by step, and the ground sample is rinsed with clean water, and then polished on a polishing machine. The sample after polishing is selected from 100mlK 2 Cr 2 o 7 Saturated solution, 5mlH 2 SO 4 Reagent consisting of 3 ml saturated NaCl solution with H 2 After O mixing, wipe the sample, the mixing volume ratio is 1:10, and the wiping time is 5S. After the erosion is completed, the NaOH solution with a mass percentage concentration of 10% is used to wipe the sample, and the wiping time is 4S. Finally, a clear metallographic structure of nuclear-grade silver-indium-cadmium control rod samples was observed.

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Abstract

The invention relates to a sample processing method for observing nuclear silver-indium-cadmium control rod metallographic structure. The method is characterized in that the processing method comprises the following steps: (1) processing a sample observer to produce an observation plane; and (2) grinding the plane with a metallographic grinder, then polishing with a polisher; (3) mixing a reagentcontaining K2Cr2O7 saturated solution, H2SO4 and NaCl saturated solution with H2O, wiping the plane with the mixed solution to corrode the observation plane, then wiping the observation plane by using NaOH solution to remove white precipitation film generated by the corrasion process and finally observing the nuclear silver-indium-cadmium control rod metallographic structure. The method of the invention is easy to operate without any special equipment.

Description

technical field [0001] The invention relates to a sample processing method for observing the metallographic structure of a nuclear-grade silver-indium-cadmium control rod. Background technique [0002] Nuclear-grade silver-indium-cadmium control rods, as functional materials in nuclear reactor control components, are indispensable key materials for nuclear reactors, and play a role in controlling the start, stop and power regulation of nuclear reactions. Due to the high technical requirements for its manufacture, in order to ensure the control performance of nuclear-grade silver-indium-cadmium control rods, it is necessary to observe and evaluate the grain size of its metallographic structure in order to obtain control rod materials with good performance. At present, there is no literature report on the metallographic structure display method of nuclear-grade silver-indium-cadmium control rods at home and abroad. Contents of the invention [0003] The object of the presen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/32
Inventor 马红征叶红川张雪华武晶晶何伟戴佩兰唐进贾勇
Owner 西安汉唐分析检测有限公司
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