Lubricant composition for forming hemimorphite-containing lubrication coating, method for forming said lubrication coating on surface of metal workpiece, and metal workpiece comprising said lubrication coating
US12319885B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 8, 2021 |
| Grant date | Jun 3, 2025 |
| Priority date | — |
| Expiry date | Feb 8, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2050/025
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Problems addressed by the present invention are to provide a lubricant composition that is capable of being used as an alternative to chemical conversion treatment by means of phosphate, to provide a lubricant composition having practical stable lubricative performance without the need for additional unwanted operations, and to provide a method for using this to form a lubrication coating, and a metal workpiece at which a lubrication coating is formed on a surface thereof. Provided as a means for solving such problems is a lubricant composition for causing formation of a hemimorphite-containing lubrication coating that contains a silicate compound (e.g., colloidal silica) and water-soluble zinc in solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.