Degussa Aktiengesellschaft

Gernot Jackel

Horst Heidsiek

Lorenz Berchtold

Horst Becker

Zinc-free nickel alloys for spectacle frames and spectacle parts are described which in addition to very good corrosion properties also show good shaping properties. In addition to nickel, they contain 5 to 20% copper, 2 to 6% aluminum, 0 to 1% beryllium, and up to 0.5% carbon.

Spectacle frames made of NI alloy

New nickel alloys are described which are useful for eyeglass frames, which alloys in addition to good resistance to corrosion also have good workability properties. They contain 5 to 20 percent copper and 5 to 30 percent zinc. Optionally, they can also be alloyed in small amounts other metals such as manganese, silicon, beryllium, cobalt, aluminum, niobium, tantalum, or titanium.

Eyeglass frames made of Ni alloy

There is described a new material for jewelry and commodities which has a relatively low density and also is low carat but resistant to oxidation and corrosion. It consists of a noble metal or alloy and 1 to 70 volume % glass, whereby as glass there is used a glass frit having a transformation temperature of 300.degree. to 500.degree. C. and a softening interval of over 80.degree. C. There is also described a process for its production.

Growing community of inventors

Hasselroth, Germany

Gernot Jackel