Visible Corrosion Briefly Describes Titanium And Titanium Alloy Handprint Corrosion
When we produce titanium and titanium alloy products with high surface requirements, we found a very interesting phenomenon.
If you touch titanium and titanium alloy products with bare hands, you will leave a clear yellow finger print on the surface of the product.
A common action in daily life - directly touching the surface of titanium and titanium alloy products with your hands can become the trigger for rust. This corrosion phenomenon caused by fingerprint residue is called "handprint corrosion". Titanium alloys are widely used in various fields due to their high strength, low density, and excellent corrosion resistance, including aerospace, medical devices, and sporting goods. However, although titanium alloys have excellent corrosion resistance, they still need to be careful to avoid contact with certain substances, one of which is human hands.
Human hands typically secrete oil and salt, and are easily contaminated by environmental dirt. When bare hands touch titanium alloys, these oils, salts, and dirt may adhere to the surface. Over time, these contaminants can cause damage to the titanium alloy surface, such as surface contamination, color changes, and even corrosion. To maintain the excellent performance and aesthetics of titanium alloys, it is recommended to avoid direct contact with bare hands or to clean immediately after contact.
Let's analyze the composition of sweat. Sweat is mainly composed of water, salts, and a small amount of organic matter. Among them, salts are mainly in the form of sodium chloride. Although sodium chloride itself is less corrosive to titanium alloys.
However, under certain conditions, such as high temperature, high humidity and other environments, and the titanium product has been processed (no oxide layer has been formed on the surface of the product), the salt in sweat may accelerate the corrosion process of titanium alloy. In addition, organic matter in sweat may also react chemically with titanium alloys, affecting the surface effect of titanium products.
Prevention methods for handprint corrosion:
Cleaning: Wipe with non-woven cloth dipped in denatured alcohol immediately after contact. Or rinse and wipe with plenty of water to remove fingerprint residue.
Avoid naked hand contact: wear nitrile gloves during operation, and gloves need to be changed regularly (it is recommended to change them every 2 hours)
In addition to human hands, titanium alloys should also avoid contact with the following materials:
1. Chloride: Chloride, such as salt water, is corrosive to titanium alloys. While titanium alloys exhibit good corrosion resistance to chloride environments such as seawater in most cases, long-term exposure or high concentrations of chloride environments can still cause damage.
2. Acidic or alkaline substances: Chemicals with strong acids or alkalines can cause corrosion to titanium alloys. These substances can destroy the oxide layer on the surface of titanium alloys, which can lead to accelerated corrosion.
3. Certain Metals and Non-Metallic Materials: Galvanic corrosion can occur when titanium alloys come into contact with certain metals, such as different types of steel. In addition, some non-metallic materials (such as some rubbers, plastics, etc.) may release chemicals that can cause damage to titanium alloys when they come into contact with them. Therefore, when selecting materials in contact with titanium alloys, their electrochemical compatibility needs to be considered.
4. Frosted materials and rough hard objects: Avoid using frosted materials such as sandpaper and grinding wheels to rub against titanium alloys to avoid scratching or damaging its surface. At the same time, be careful to avoid contact between titanium alloy and rough hard objects to avoid scratches.
How to maintain titanium alloy products?
To extend the service life and maintain the aesthetics of titanium alloy products, the following maintenance measures can be taken:
a. Regular cleaning: Use mild soapy water and a soft cloth to wipe down titanium products to remove dirt and grease from surfaces. Avoid using harsh cleaning agents, acidic or alkaline solutions to avoid damage to titanium alloys.
b. Avoid contact with harmful substances: Try to avoid exposing titanium alloy products to chlorides, acids and alkaline substances that may corrode them. If you come into contact with these substances, rinse them immediately with clean water and dry them in time.
c. Store properly: Store titanium alloy products in a dry and ventilated place to avoid contact with moisture. Also, wrap titanium products in soft bags or cloth to avoid collisions and scratches.
Conclusion
As a high-performance metal material, titanium alloy needs to be used and maintained to avoid contact with certain corrosive substances and substances that may cause physical damage. Through reasonable maintenance and use methods, the service life of titanium alloy products can be extended and maintained in good condition.
If you need high-quality titanium plates and titanium products of various specifications and standards, please feel free to visit our website and www.major-ti.com.
The main product of Baoji Mingjie Titanium Material Technology Co., Ltd. titanium plate has the following advantages:
Product quality advantages
Material purity and performance: The titanium plates produced by the company are made of high-purity titanium materials (such as TA1, TA2, TC4, etc.), which have excellent corrosion resistance, high strength and lightweight characteristics, and are suitable for high-demand fields such as chemical, aviation, and medical.
Process technology: Relying on the technology accumulation of Baoji Titanium Industrial Base, the company has mature processing technology, which can provide customized cutting, forging and other services to meet the needs of different industries for titanium plate size and performance.
Wide application: The product covers aerospace, biomedical, electronics and other fields, such as spacecraft components, orthopedic implants, etc., verifying its reliability and stability.
Price advantage
Large-scale production: As a Baoji titanium industry chain enterprise, the company may benefit from the regional industrial cluster effect, reduce costs through large-scale production, and provide more competitive prices.
Customized services: support zero-cut processing and specification customization, reduce customer material waste, and indirectly reduce procurement costs.
Comprehensive competitiveness
Our company takes "honest management, quality first" as the concept, combined with the technical advantages of Baoji titanium industry (such as Baotian Group and other chain main enterprises), its titanium plate has market competitiveness in terms of performance and cost performance. The specific price needs to be further consulted according to the specifications and order volume, but with reference to similar enterprises (such as Xinhongyuan and Yingxiang Titanium Industry), the price range of TC4 titanium plate is about 110-440 yuan/kg, and the price range of TA1 pure titanium plate is about 10-200 yuan/kg.
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