Nickel base alloy for dental porcelain

Abstract

The invention relates to a nickel base alloy used for dental porcelain, which is characterized by comprising rare earth elements; the chemical compositions (weight percentage) are as follows: 20 to 25 percent of chromium, 5 to 8 percent of molybdenum, 1 to 5 percent of cerium, 0.5 to 1 percent of manganese, 0.3 to 0.5 percent of rhodium, 1 to 5 percent of tungsten, 1 to 2 percent of silicon, 0.01 to 0.20 percent of cerium and the balance of nickel. The invention not only has good oxidation resistance and corrosion resistance but also has good casting and cutting performances and can be well matched with the existing porcelain powder for use.

Description

Technical field [0001] The invention relates to a nickel-based alloy, in particular to a nickel-based alloy used for dental ceramics, which belongs to the alloy material technology. Background technique [0002] Porcelain periodontal casting alloys used in dentistry require alloys with high strength, good ductility and plasticity, and good grinding properties. The alloys are also required to have the function of matching porcelain powder. Due to long-term use in the oral cavity, the alloys are required to have good resistance Oxidation and corrosion resistance. The more commonly used ceramic alloy materials are noble metal alloys, such as Au-Pt-based alloys, Pd--Ag-based alloys, and Ni-Cr alloys of non-precious metal alloys. Porcelain materials made of precious metal alloys have good performance, but their application range is limited due to their high price. Porcelain materials of non-precious metal alloys contain a certain amount of Be element, which produces harmful gas...

AI Technical Summary

Problems solved by technology

Porcelain materials made of precious metal alloys have good performance, but their application range is limited due to their high price