Supercharge Your Innovation With Domain-Expert AI Agents!

Green corrosion inhibitor used for titanium in acid medium

A corrosion inhibitor and medium technology, which is applied in the field of corrosion inhibitors and corrosion inhibitors for inhibiting corrosion of titanium materials in sulfuric acid medium. It can solve the problems of poor corrosion inhibition effect, high price, and large dosage, and achieve low cost and good effect. , the effect of small dosage

Inactive Publication Date: 2013-06-05
JIAYING UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Molybdate is basically non-toxic, and has far more adverse effects on the environment than other metals (Zn 2+ 、Cr 6+ etc.) small, it is gradually being used to replace Cr 6+ As a corrosion inhibitor, but the dosage is large, the price is high, and the corrosion inhibition effect is better than that of Cr 6+ Difference

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
  • Green corrosion inhibitor used for titanium in acid medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The experimental medium is a mass concentration of 10% H 2 SO 4 , the experimental temperature is (50±1)℃. According to the above method, the corrosion rate, corrosion inhibition efficiency and appearance of the titanium sheet were tested by sulfuric acid without adding a corrosion inhibitor, adding a single corrosion inhibitor and adding the green corrosion inhibitor disclosed in the present invention; the test results are shown in Table 1.

[0021] Table 1

[0022] Corrosion inhibitor and its concentration

Embodiment 2

[0024] The experimental medium is a mass concentration of 10% H 2 S0 4 , the experimental temperature is (50±1) ℃, the addition concentration of the green buffer compounded by polyaspartic acid and ammonium molybdate is 132mg / L, and the addition of polyaspartic acid and ammonium molybdate is tested according to the above method The corrosion rate and corrosion inhibition efficiency of different mass proportions of corrosion inhibitors on titanium sheets; the test results are shown in Table 2.

[0025] Table 2

[0026] Mass ratio of polyaspartic acid to ammonium molybdate

Embodiment 3

[0028] The experimental medium is H with different mass concentrations 2 SO 4 solution, the experimental temperature was (35±1)°C, the mass ratio of polyaspartic acid to ammonium molybdate was 10:1, and the corrosion rate and corrosion inhibition efficiency of titanium sheets were tested according to the above methods; the test results are shown in Table 3.

[0029] table 3

[0030]

[0031] As can be seen from Table 3, the green corrosion inhibitor, under the same temperature conditions, every 15 percent increase in acid concentration, the amount of the green corrosion inhibitor doubled, but not proportional.

[0032] The concentration of corrosion inhibitor here is the mass of corrosion inhibitor / (volume of acidic medium + volume of corrosion inhibitor).

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 green corrosion inhibitor used for titanium in an acid medium, which aims to provide a green corrosion inhibitor which is composed of a nontoxic and harmless reagent, does not pollute environment, conforms to the environmentally-friendly development of chemical industry and has the advantages of small use amount, low cost, good effect and high application value. The green corrosion inhibitor has the technical key points that the green corrosion inhibitor is compounded by polyaspartic acid and ammonium molybdate at the mass ratio of (10-12): 1, and belongs to the technical field of metal material / chemical equipment corrosion resistance.

Description

technical field [0001] The invention discloses a corrosion inhibitor, specifically a corrosion inhibitor for inhibiting corrosion of titanium materials in a sulfuric acid medium, and belongs to the technical field of metal material / chemical equipment anticorrosion. Background technique [0002] Titanium is a metal widely used in industry after iron and aluminum, known as the "third metal". Although titanium is a metal with high corrosion resistance, it is susceptible to strong corrosion in non-oxidizing media. The simple and effective way to inhibit the corrosion of metals in the medium used is to add corrosion inhibitors to the corrosive medium. At present, the main substances used to inhibit the corrosion of titanium in sulfuric acid solution are Fe 3+ 、Cu 2+ 、Cr 6+ , nitro and nitroso aromatic compounds, nasturtium orange, alizarin compounds, etc. Although there are many types of corrosion inhibitors, most of them will cause certain pollution to the environment during...

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 Patents(China)
IPC IPC(8): C23F11/04
Inventor 张丰如赖俐超唐春保何优选
Owner JIAYING UNIV
Features
  • R&D
  • 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