Multilayered corrosion and anti-galling coating for threads and wearable materials

{
  "publication_number": "US11248289B2",
  "country": "US",
  "kind": "B2",
  "title": "Multilayered corrosion and anti-galling coating for threads and wearable materials",
  "abstract": "A multilayered corrosion and anti-galling coating for threads and wearable materials is a liner that can be superimposed onto the surface of a device in order to protect the surface from environmental hazards. To accomplish this, the coating has a base adhesive layer, an intermediary insulation layer, an interstitial adhesive layer, and a lubricating material layer. The base adhesive layer adheres to the device's surface thus enabling the coating to form a sealing liner. The intermediary insulation layer is positioned in between the base adhesive layer and the interstitial adhesive layer. As a result, the intermediary insulation layer prevents negative chemical interactions between the base adhesive layer and the interstitial adhesive layer. The lubricating material layer is super imposed onto the interstitial adhesive layer to provide a friction-reducing coating for the device's surface.",
  "claims": [
    "1. A multilayered corrosion and anti-galling coating for threads and wearable materials comprising: a base adhesive layer composed of a material selected from chrome or a mixture of titanium and chrome; an intermediary insulation layer; an interstitial adhesive layer composed of a material selected from chrome or a mixture of titanium and chrome; an lubricating material layer; the intermediary insulation layer being superimposed onto the base adhesive layer; the interstitial adhesive layer being superimposed onto the intermediary insulation layer, opposite to the base adhesive layer; the lubricating material layer composed of gold being superimposed onto the interstitial adhesive layer, opposite to the intermediary insulation layer; a thickness of the base adhesive layer; a thickness of the intermediary insulation layer; a thickness of the interstitial adhesive layer; a thickness of the lubricating material layer; the thickness of the base adhesive layer, the thickness of the interstitial adhesive layer and the thickness of the lubricating material layer each being less than the thickness of the intermediary insulation layer; the thickness of the base adhesive layer being 1200 to 1800 angstroms; the thickness of the intermediary insulation layer being 12000 to 15000 angstroms; the thickness of the interstitial adhesive layer being 1200 to 1800 angstroms; and the thickness of the lubricating material layer being 350 to 400 angstroms."
  ],
  "description_excerpt": "The current application claims a priority to the U.S. Provisional Patent application Ser. No. 62/584,538 filed on Nov. 10, 2017.\n\nThe present invention relates generally to a surface treatment. More specifically, the present invention relates to a multilayered coating that reduces friction, corrosion, and galling damage.\n\nThe present invention, the multilayered corrosion and anti-galling coating for threads and wearable materials, is a coating that acts as an abrasive and adhesive wear protection. Further, the present invention acts as a corrosion and friction reducing coating. This functionality of the present invention prevents two interlocking devices from wear caused by galling, corrosion, and erosion. The coating is produced by first applying an adhesion layer of titanium or chrome to the surface of a device. A second layer of Hafnium oxide is then applied over the titanium or chrome layer. A third layer that is composed of chrome is then applied on top of the hafnium oxide layer. Finally, a fourth layer that is gold is applied on top of the third chrome layer. This fourth layer acts as a lubrication layer to prevent galling and cold bonding of the two interlocking devices when the devices are composed of metal. Preferably, the layers of the coating are applied in an ultra-high vacuum chamber and deposited using electron e-beam ion mill assisted deposition. The coating is developed for oil field pipe threads, off shore drilling pipe or any threads or materials that may wear or have galling issues or may be subject to a corrosive environment such as hydrogen sulfides.",
  "cpc": [
    "C23C 14/025",
    "B05D 5/08",
    "C23C 14/08",
    "C23C 14/16",
    "C23C 14/18",
    "C23C 28/321",
    "C23C 28/322",
    "C23C 28/3455",
    "E21B 17/042",
    "F16B 33/008",
    "F16B 33/06",
    "F16L 58/08",
    "F16L 58/182"
  ],
  "ipc": [
    "B05D 5/08",
    "C23C 14/02",
    "C23C 14/08",
    "C23C 14/16",
    "C23C 14/18",
    "C23C 28/00",
    "E21B 17/042",
    "F16B 33/00",
    "F16B 33/06",
    "F16L 58/08",
    "F16L 58/18"
  ],
  "assignees": [
    "Dallas Thin Films"
  ],
  "inventors": [
    "SHAFER STEVEN CRAIG"
  ],
  "filing_date": "2018-07-30",
  "publication_date": "2022-02-15",
  "grant_date": "2022-02-15",
  "priority_date": "2017-11-10",
  "application_number": "US-201816049532-A",
  "family_id": "66431920",
  "citations": [
    "JP2002254206A",
    "US2004038068A1",
    "US2010266790A1",
    "US2014362434A1",
    "US2018282153A1",
    "US4468309A"
  ]
}