Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Metallographic etching method for uranium-zirconium alloy

A zirconium alloy and etching technology, applied in the field of metallographic corrosion of uranium-zirconium alloy, can solve the problems of environmental pollution and human injury, poor tissue display effect, low success rate, etc., to avoid injury and safety hazards, and to achieve good display effect. , the effect of simple formula

Inactive Publication Date: 2017-07-07
CHINA NORTH NUCLEAR FUEL
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The metallographic etching method of uranium-zirconium alloy uses corrosive solution containing highly oxidizing chromic anhydride and irritating glacial acetic acid, which will cause environmental pollution and human injury, and there is a major safety hazard; using highly oxidizing, corrosive Sulfuric acid and nitric acid corrosion solution, the success rate is low, the tissue display effect is not good, and the corrosion effect is not ideal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The present invention will be described in detail below in conjunction with specific embodiments.

[0014] The uranium-zirconium alloy metallographic etching method of the present invention comprises the following steps:

[0015] Cut 15mm×15mm×10mm uranium-zirconium alloy. During the cutting process, a sufficient amount of cooling liquid should be used to avoid tissue changes due to overheating. 180#, 400#, 800#, 1500#, 2000#, 3000# metallographic water sandpaper, using water as lubricant, grinding step by step, each grinding removes the previous grinding marks, grinding time 1-10min. Using water as lubricant, grind the surface of the sample to be observed with 180# coarse sandpaper for 1 minute; use 400# water sandpaper for 3 minutes; use 800# water sandpaper for 3 minutes; use 1500# water sandpaper for grinding Grinding for 5 minutes; Grinding with 2000# water sandpaper for 5 minutes; Grinding with 3000# water sandpaper for 5 minutes. Mechanically polish with 1.0μm ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of metallographic etching of uranium-zirconium alloy and particularly relates to a metallographic etching method for the uranium-zirconium alloy. The method includes: cutting the uranium-zirconium alloy; gradually polishing with 180#, 400#, 800#, 1500#, 2000# and 3000# metallographic waterproof abrasive paper, wherein each polishing removes one polishing scratch, and polishing time is 1-10 minutes; using water as the lubricating agent to perform mechanical polishing; using a 1-50% phosphoric acid aqueous solution to perform electrolytic etching, wherein electrolytic etching voltage is 2-5V, and electrolytic etching time is 2-10 seconds. The metallographic etching method has the advantages that a structure metallographic sample applicable to metallographic observation is prepared by mechanically grinding and polishing a uranium-zirconium alloy sample and using the phosphoric acid aqueous solution to perform electrolytic etching; provided electrolytic etching liquid is simple in formula, good in alloy structure display effect and capable of avoiding human body damage and potential safety hazard caused by the using of high-oxidability chromic anhydride.

Description

technical field [0001] The invention belongs to the technical field of metallographic corrosion of uranium-zirconium alloys, and in particular relates to a metallographic etching method of uranium-zirconium alloys. Background technique [0002] The internal structure of metal materials determines the properties of materials, and metallography is the most direct and effective method for studying the internal structure of materials. The observation of the metallographic structure needs to etch out the internal structure of the metal material. The metallographic etching method of uranium-zirconium alloy uses corrosive solution containing highly oxidizing chromic anhydride and irritating glacial acetic acid, which will cause environmental pollution and human injury, and there is a major safety hazard; using highly oxidizing, corrosive Sulfuric acid and nitric acid etching solutions have a low success rate, poor tissue display, and unsatisfactory corrosion effects. Contents of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N1/32G01N1/28
CPCG01N1/32G01N1/286G01N2001/2866
Inventor 贺进明高一鸣齐建波池春霞
Owner CHINA NORTH NUCLEAR FUEL
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com