High-precision low-reflective blackening treatment for aluminum alloys with excellent heat resistance and UV resistance.
Low-reflective black anodizing for optical components in high temperatures and special environments to prevent stray light. Capable of withstanding over 300℃!
TAF TR BK refers to a heat-resistant and UV-resistant black anodized treatment that does not crack or discolor even under high temperatures of 350°C or in environments exposed to ultraviolet light. By applying a pre-treatment, it is also possible to create a heat-resistant, UV-resistant matte black anodized finish (TAF TR SBK) that has low reflectivity. By switching from conventional surface treatments to TAF TR BK, performance improvements can be achieved. Recently, there has been an increase in major companies actively investigating and reviewing surface treatment technologies, leading to a diversification of demands for surface treatments. TAF TR BK is expected to be developed for various applications as a cost-effective surface protection film that can be used at high temperatures, serving as an alternative to traditional anodizing treatments and expensive vapor deposition methods.
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basic information
Differences from conventional coatings Standard black anodizing can decompose the dye in the microscopic pores of the coating when exposed to heat or prolonged ultraviolet or sunlight, leading to discoloration. Additionally, due to the difference in the coefficient of linear thermal expansion between the substrate and the coating, stress can cause cracks and coating loss, resulting in a loss of surface protection functionality. However, TAF TR BK does not discolor or crack even when heat-treated at 350°C. Heat resistance / UV resistance Standard black anodizing treatment can vary depending on the substrate material and film thickness, but discoloration and cracking can occur with heating around 150°C, and complete discoloration can happen if the temperature exceeds 250°C, potentially leading to complete delamination of the coating. TAF TR BK withstands heating tests at 350°C without discoloration or cracking due to outdoor exposure or ultraviolet irradiation. (Examples of heat resistance tests: 180°C for 2000 hours, 350°C for 10 hours, etc.) TAF TR SBK Reflectivity (Low Reflectivity) As a derivative treatment of TAF TR BK, there is TAF TR SBK, which features a matte low-reflective specification. TAF TR SBK is ideal for optical components (cameras, light source devices) used in high-temperature environments.
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Applications/Examples of results
01. Prevention of foreign matter contamination in semiconductor manufacturing equipment 02. Reduction of wear on resin sliding counterparts 03. Improved sliding properties of optical components 04. Enhanced corrosion resistance of hard anodized coatings 05. Jigs and heat treatment equipment used at high temperatures 06. Prevention of stray light by improving heat resistance of optical components 07. Exterior parts used at high temperatures 08. Improved heat resistance of parts subjected to high-temperature cleaning 09. Enhanced UV resistance of light source devices Example - Maintains black color under high temperatures without cracks or peeling → Enables low reflectivity maintenance, stray light prevention, and dimensional accuracy maintenance - Usable outdoors - Ideal for precision optical components, sensors, and exterior parts such as cameras and light source devices used at high temperatures - Also applicable to LED lighting fixtures and heat sinks
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Company information
We offer a wide range of services, including high heat-resistant crack-free hard anodizing, high adhesion, general hard anodizing, oxalic anodizing, and lubricating hard anodizing, as well as various colors, bright finishes, matte finishes, and die-cast anodizing (including deep black). We also accommodate double anodizing treatments. Additionally, sandblasting is continuously performed in-house. For aluminum chemical conversion coating, we provide two types: chrome-free and trivalent chrome. *We have started operations on both automatic and manual lines to strengthen our production system. Please feel free to contact us for any inquiries or requests.