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Lubricant Deposition for Hard Disk Drives


Fast drying, nonflammable carrier solvents for disk lube & coating deposition

As computer hard disk recording densities increase and fly heights decrease, the performance requirements for lubricants, coatings and their carrier solvents continue to become more exacting. These solvents must dissolve traditional perfluoropolyether (PFPE) lubricants, as well as new lubricant additives. At the same time, the carrier solvents must be free of unwanted contaminants such as water, particulate, ions, metals, and other non-volatile residues.

3M™ Novec™ Engineered Fluids are a family of nonflammable, low global warming solvents, used in a wide variety of electronics manufacturing processes. Several of these fluids have proven to be ideal for lubricant and coating deposition on hard disk drives.

One of the main reasons Novec fluids are effective in this application is because of their "selective solvency" – meaning they dissolve the lubricant, and essentially no water, ions, or metals. They also provide solubility with other components of the lube packages, such as additives.

In addition to delivering good solvency for PFPE lubricants, Novec fluids are also effective for dispersing a wide variety of other coatings and lubricants including fluorocarbons and PTFE. By using Novec fluids as the carrier solvent, these lubricants can be successfully deposited on many different types of surfaces, including metals, plastics and elastomers. Novec fluids have low surface tension for uniform coating, and evaporate rapidly to potentially speed your drying process.

The safe, sustainable alternative to conventional carrier solvents

Equally important to their outstanding performance characteristics, Novec fluids are nonflammable, low in toxicity and have low environmental impact – giving you a safe, sustainable alternative to conventional lubricant and coating deposition solvents, such as HCFCs, PFCs and HFCs.

  • Excellent surface wetting and flow
  • Compatibility with disk media and materials used in disk drive assemblies
  • Low water solubility
  • Extended bath life
  • Fast drying
  • Low toxicity
  • Non ozone depleting
  • Low global warming potential
  • Exempt from the U.S. EPA definition of a volatile organic compound (VOC)

Several high purity electronics grades of Novec fluids (designated as "DL") have been specially formulated for use in disk lube and coating deposition. They offer even tighter specifications for ions, metals, particulate and non-volatile residue, and exhibit excellent solvency for disk lubes and additives. Specialized packaging helps to meet consistency and purity requirements.

3M™ Novec™ Engineered Fluids for Hard Disk Drive Lubricant and Coating Deposition

3M™ Novec™ 7100 Engineered Fluid
3M™ Novec™ 7100DL Engineered Fluid
3M™ Novec™ 7200 Engineered Fluid
3M™ Novec™ 7200DL Engineered Fluid
3M™ Novec™ 7300 Engineered Fluid
3M™ Novec™ 7300DL Engineered Fluid

 

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