In the rapid molding method of tantalum coating, atmospheric pressure CVD (APCVD) technology has been very mature, which uses hydrogen to reduce tantalum pentachloride and prepare tantalum metal coating on porous titanium alloy matrix. The results show that high-quality tantalum coating can be deposited on both internal and external surfaces of porous titanium alloy.
Moreover, the tantalum coating deposited by this method has the advantages of good stability, uniformity and durability.
Tantalum pentachloride can react with methane gas to produce tantalum carbide, tantalum carbide has a melting point of 3800 degrees Celsius, is a good ultra-high temperature ceramic material. Tantalum pentachloride produced by Huajing has good particle fluidity, high whiteness, higher purity and good reactivity. The production and sales volume of tantalum pentachloride produced by Huajing has jumped to the second level in the world.
Biomedical materials are the basis of the development of modern clinical medicine, and metal materials are an important part of medical materials. It is a simple, quick and effective method to modify the surface of medical metal materials to improve their comprehensive properties. The preparation of tantalum coating on the surface of medical metal materials not only takes advantage of the performance advantages already possessed by the material, but also plays the characteristics of good biocompatibility of tantalum metal, and reduces the high cost of completely using tantalum metal. Of course, high-quality tantalum coatings still need to solve problems such as the binding force between the coating and different substrates, the density of the coating surface, the coverage rate of the coating on the material surface and the long-term stability of the material after implantation. The development of a mature and stable process for the synthesis of CVD tantalum layer by tantalum pentachloride reduction has become the focus to solve such problems. In order to further reduce the cost of traditional materials, improve the biocompatibility of materials, and meet the requirements of various mechanical properties required for repairing different tissues of the human body, there are still many problems worthy of further study. Through the joint efforts of material science, manufacturing and medical workers, tantalum and more metal materials will certainly play an increasingly important role in the medical field.