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
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United States of America Patent
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Issued Date -
Mar 16, 2023
app pub date -
Feb 8, 2021
filing date -
Feb 6, 2020
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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.
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