The fabrication process of aluminum nitride ceramic circuit boards is very complicated. As mentioned before, the first step is the surface treatment of aluminum nitride ceramic circuit boards, also known as grinding and grinding, which is used to remove the deposits on the surface and Improvement in flatness.
As is known, aluminum nitride ceramic circuit boards are much harder than alumina ceramic circuit boards. When it is required to have a relatively thin thickness, grinding is a very rare thing to ensure that the aluminum nitride ceramic circuit board will not break. Cracking, but also to meet the requirements of dimensional accuracy and surface roughness, this is a test of the operation of the technician.
The different grinding methods have great influence on the flatness, productivity and yield of the aluminum nitride ceramic circuit board, and the subsequent steps are impossible to improve the accuracy of the geometry of the substrate. Therefore, Slyton's aluminum nitride ceramic circuit board is made of discrete abrasive double-sided grinding. The cost of the whole process will be much improved for the manufacturer, but in order to provide customers with a perfect aluminum nitride ceramic circuit board, Slyton still has a lot of work in this regard.
The choice of slurry is also a very topical topic. The slurry chosen by Slyton is 3M. 3M has become a well-known multinational company with diversified technology, producing and selling more than 60,000 products worldwide. Among them, the grinding and polishing consumables are one of the products produced by 3M Company. The 3M polishing liquid is a surface treatment agent for aluminum nitride ceramic circuit boards which is completely free of wax and silicone, and is an abrasive particle mixed in a solvent or water. Simply speaking, it is a kind of liquid sandpaper, which is divided into coarse, medium-thick, fine and ultra-fine according to the size of the particles. The hand-grinding five-grade grinding liquid is combined with the pneumatic grinding machine, and the wool ball can improve the grinding efficiency and the grinding effect. It is now widely used in a variety of finer surface treatments.
The slurry is a water-soluble abrasive that is good at removing oil, rust, cleaning and lightening, so that the aluminum nitride ceramic circuit board can exceed the original gloss. However, some aluminum nitride ceramic circuit boards in the domestic market are still not perfect, such as the problem of flow marks in products, which is a problem that plagues the aluminum nitride ceramic circuit board processing industry. There is still no way to achieve better cost control and production processes.
As one of the few manufacturers in China that can mass-produce aluminum nitride ceramic circuit boards, Silitong has experienced many difficulties in production, and succeeded in successfully developing key technologies among them, so that the production of aluminum nitride ceramic circuit boards has been successfully tested. The room went to our production site in Slito.
Formulation reference:
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