tombac

Thân thiện

A jeweler carefully shapes a piece of tombac into a decorative brooch.

Definition

Noun: 1. An alloy of copper and zinc: A metallic substance, primarily composed of copper and zinc, sometimes containing other elements like arsenic. It is known for its gold-like appearance and malleability, making it suitable for decorative purposes where a less expensive, gold-imitating material is desired.

Usage and Examples

• Primary Use: Tombac is used as a base metal for inexpensive jewelry and for the process of gilding (applying a thin gold layer).
  • The antique brooch was not solid gold; it was made of tombac and then gilded.
  • Artisans in the 18th century often used tombac to create affordable decorative items that resembled gold.

Advanced Usage

• Historical and Artistic Context: The term is often encountered in discussions of historical metallurgy, antique collecting, and art restoration, where identifying the base metal is important.
  • The museum's conservator identified the statue's core material as tombac, explaining why it was so lightweight compared to a bronze piece.

Variants and Related Words

• Tombak: An alternative spelling for the same alloy.
• Pinchbeck: A historical term for a similar copper-zinc alloy specifically invented to imitate gold.
• Ormolu: Refers to gilded bronze or a similar gold-coloured alloy, often used for decorative mounts; tombac can be a component.

Synonyms and Near-Synonyms

• Alloy: The general category for metallic mixtures.
• Brass: A common copper-zinc alloy; tombac is a specific type or historical name for certain brass compositions.
• Muntz metal: Another type of brass alloy, but typically with a different zinc ratio for specific industrial uses.

Notes on Meaning

• The key characteristic of tombac is its functional purpose as a gold-imitating material in decoration and jewelry, rather than its precise chemical composition, which can vary. It is distinguished from standard brass by this intended use and its historical context in decorative arts.

Học thuật

Noun

1. an alloy of copper and zinc (and sometimes arsenic) used to imitate gold in cheap jewelry and for gilding

Từ đồng nghĩa

• tombak
• tambac