Li-containing and Re-containing gold alloy capable of inhibiting low-temperature brittleness and used for 10K red gold

Abstract

The invention discloses Li-containing and Re-containing gold alloy capable of inhibiting low-temperature brittleness and used for 10K red gold. The alloy comprises the following components in percentage by weight: 0.2 to 0.4 percent of Li, 0.3 to 0.5 percent of Re, 0.2 to 0.3 percent of Ti, 3.0 to 4.5 percent of Sn, 25.0 to 32.0 percent of Ag, 41.0 to 43.0 percent of Au and the balance of copper.The patent solves the existing conditions that the current 10K red gold material has low-temperature brittleness and the technology falls behind. The development bottleneck of the 10K red gold material for jewelry is broken through by innovating and optimizing the alloy components. Through prediction, implementation and industrialization of the material can achieve plenteous economic gain and social benefit.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a gold alloy. Background technique [0002] Gold is a precious metal and one of the earliest metals discovered and developed by human beings. It is an important raw material for making jewelry and coins, and it is also an important reserve material of the country. It is known as the king of metals. It is not only regarded as a symbol of beauty and wealth, but also benefits human life with its unique value. An important application field of gold is decorative materials, including jewelry and so on. Gold can also be used in daily necessities, such as gold-plated clocks, belt buckles, lighters, pens, etc. Watch Kingdom Switzerland is not a big country, but its jewelry industry consumes about 40 tons of gold every year, 95% of which are used in watchmaking. Only one watch factory in Japan consumes 1 ton of gold salt a year, equivalent to 680 kilograms of gold. The use of gold is ...

AI Technical Summary

Problems solved by technology

But at present, the problem of brittle fracture of 10K red gold can only be solved by indirect methods, such as accelerating the solidification speed of castings, adopting the process of deformation after homogenization, etc.

However, these methods cannot fundamentally provide a complete solution for the low-temperature brittle fracture of 10K red gold, and 10K red gold will still undergo brittle fracture after long-term use.