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

Test method for simulating corrosion process of stainless steel in atmospheric environment of salt lake

A technology of atmospheric environment and corrosion process, applied in the direction of weather resistance/light resistance/corrosion resistance, measuring devices, instruments, etc., can solve the problems of simulation requirements that cannot meet the characteristics of the atmospheric environment in the northwest salt lake area, and achieve simulation, saving Production cost, good simulation effect

Inactive Publication Date: 2019-07-30
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
View PDF10 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing accelerated corrosion test method mainly considers the influencing factors such as humidity, temperature, and corrosive medium, and ignores the influence of ultraviolet radiation on metal corrosion, which cannot meet the simulation requirements of the characteristics of the atmospheric environment in the Northwest Salt Lake area.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Test method for simulating corrosion process of stainless steel in atmospheric environment of salt lake
  • Test method for simulating corrosion process of stainless steel in atmospheric environment of salt lake
  • Test method for simulating corrosion process of stainless steel in atmospheric environment of salt lake

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The test material is the above-mentioned 304 test stainless steel, with MgCl 2 The solution is a corrosive medium, and the corrosive medium is deposited on the surface of the stainless steel sample with a micro-syringe, and then the sample is placed in a drying oven until the water on the surface of the sample evaporates, and the solid deposition on the surface of the sample is 812 μg / cm 2 , salt is deposited on the surface of the sample once every two days; the test is carried out alternately according to "wet→dry". The test cycle is once every 3 hours, the test temperature is 30°C, the relative humidity is 80% during the wetting process, and the UV lamp is automatically turned off after 1 hour of wetting time; the relative humidity is 25% during the drying process, and the drying time is 2 hours, and the UV lamp The tube is automatically opened. The test period is 30 days. The test of the sample after the simulated corrosion test shows that brightly colored corrosio...

Embodiment 2

[0042] The test material is the above-mentioned 304 test stainless steel, with MgCl 2 The solution is a corrosive medium, and the corrosive medium is deposited on the surface of the stainless steel sample with a micro-syringe, and then the sample is placed in a drying oven until the water on the surface of the sample evaporates, and the solid deposition on the surface of the sample is 812 μg / cm 2 , salt is deposited on the surface of the sample once every two days; the test is carried out alternately according to "wet→dry". The test cycle is once every 3 hours, the test temperature is 30°C, the relative humidity is 80% during the wetting process, and the UV lamp is automatically turned off after 1 hour of wetting time; the relative humidity is 25% during the drying process, and the drying time is 2 hours, and the UV lamp The tube is automatically opened. The test period is 60 days. The sample after the simulated corrosion test is tested and shows: the appearance of the corro...

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 discloses a test method for simulating a corrosion process of stainless steel in an atmospheric environment of a salt lake, and belongs to the technical field of atmospheric corrosion simulation of the stainless steel. Firstly, an ultraviolet lamp is installed in a room of a high-low temperature thermal-humidity test chamber, and a lamp wire is led out from the chamber body and is connected with an ultraviolet lamp switch. The stainless steel is used as a test material, an etching solution is deposited on the surface of a test sample by using a micro-injector and is deposited onthe surface of the test piece once after every two days. The test is alternately performed according to "wet-dry". The relative humidity in a wetting process is 70-90%, the wetting time is 1-2 hours,and the ultraviolet lamp is in a turned off state; and the relative humidity in a drying process is 10-35%, the drying time is 2-4 hours, and the ultraviolet lamp is in a turned on state. The resultsobtained by the test method provided by the invention have the characteristics of simulation, acceleration and reproducibility, and can be used for studying the corrosion behavior and corrosion mechanism of the stainless steel in the atmospheric environment of the salt lake, and evaluating and predicting the atmospheric corrosion resistance of the stainless steel in the salt lake.

Description

technical field [0001] The invention relates to the technical field of atmospheric corrosion simulation of stainless steel, in particular to a test method for simulating the corrosion process of stainless steel in the atmospheric environment of a salt lake. Background technique [0002] Atmospheric corrosion is a phenomenon in which metal materials interact with various factors in the atmospheric environment to cause material damage and failure. Therefore, the corrosion behavior and mechanism of metals in different atmospheric environments must be different. The salt lake area in Northwest my country has long sunshine hours, drought and little rain, land salinization, and rich pollutants MgCl 2 , which is significantly different from other typical atmospheres. Due to its excellent corrosion resistance, stainless steel is widely used in petroleum, chemical, electric power, building materials and other industries. However, a preliminary survey on the corrosion behavior of c...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00
CPCG01N17/006
Inventor 潘晨郭明晓路肖王振尧汪川
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com