Trivalent chromium pretreatment technology to protect aluminum and zinc

Trivalent chromium pretreatment technology to protect aluminum and zinc

The US Naval Aviation Center invented a technology that uses trivalent chromium pretreatment (TCP) technology and post-treatment technology to effectively protect aluminum and zinc products without causing environmental problems. This technology has been brought to the market by the German company SarTec International. In order to improve the corrosion resistance and paint adhesion on aluminum alloys, as well as the performance of anodized aluminum and sacrificial coatings, surface treatment is necessary. TCP is the only non-hexavalent chromium coating, which fully meets the requirements of military specifications for aluminum pretreatment and post-treatment. It can also improve conductivity, making it an ideal material for electronics and telecommunication technology.

Nano film deposition technology makes device conformal film

This nano-film deposition process has been patented by Tegal, USA. Using this process, barriers, copper seeds, and high-K dielectrics can be made for microprocessors and memory devices. The system and method have previously unseen capabilities for nano-pu film deposition (MLD). Compared with atomic layer deposition, NLD can obtain ultra-high fidelity growth: compared with chemical vapor deposition, NLD has stronger production capacity. ND can choose a variety of precursors, and can be used to manufacture complex, compound film structures, its process control ability is particularly strong. The process also includes a pulsed plasma deposition technology for the growth of a variety of thin film materials, such as titanium nitride, copper and Some insulating film materials. This pulse technology is also suitable for insulation isolation for low-K characteristic protection.

The plasma source in the NLD system is a spiral rod electrode. The system includes a multi-growth chamber platform for various processes such as pre-cleaning corrosion, MLD and densification.

Titanium-enhanced howitzer barrel made by spinning

The M77 light 15m howitzer (LW155) is a firearm used to update the outdated steel fortified M98155mm howitzer, which was used in the US Marine Corps and the Army. The barrel of the L155 cradle can support the barrel system and the anti-seat system. It is a component used by the National Center for Improved Metal Processing Technology (NCEMT) to use T6A4V to improve performance. NCEMT is trying to determine a processing method for the barrel in order to reduce costs and produce less waste than the current extrusion process.

NCEMT decided to use a new process called spinning. The Dynamic Machine Works (DMW) developed a spinning process to manufacture these barrels. As a result, DMW produced the largest spinning T-6A-4V barrel that has never been seen before, with a diameter of 142.

cm, length 183cm.

Spinning is a cold forming process that can manufacture hollow cylinders with precise dimensions. Due to its high accuracy, this process has been widely used in aerospace and military cylindrical components. During the spinning process, a thick-walled T5A4V alloy cylinder is rotated around a rotating ejector rod by means of a rotating pressure roller until it reaches the required size. Since almost 10% of the raw materials are retained, the spinning method greatly reduces the waste generated by expensive alloys. Based on the success of the process, it is expected that the process can be used in other weapon systems