Coated substrate
AssigneeTeer Coatings Limited
InventorsXiaoling Zhang, Kevin Cooke
Life of this patent
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Abstract
The invention to which this application relates is improvements to the provision of Molybdenum and/or Tungsten containing coatings of the type which can be used to improve certain characteristics of the surface of a substrate to which the coating is applied. In one embodiment the coating also includes Ti to provide the advantages of high adhesion, high humidity and wear resistance of the coating and TiB2 to promote the formation of a relatively uniform, dense, coating, so strengthening the coating which is formed and improving the high temperature performance of the coatings.
Claims18
A coating applied to a surface of a substrate wherein said coating comprises:
- MSx, and/or MSexx , where M is Molybdenum (Mo),. and Tungsten (W) and x=0.8 to 2 and wherein the coating includes repeating layers of two forms, a first form including MSx and/or MSex and Ti;
- and a second form including MSx, and/or MSex, Ti and TiB2 and within this form of layer, layers of the TiB2 material are sandwiched between layers of MSx, and/or MSex and Ti.
A method for forming a coating on a substrate surface, said method comprising the steps of:
- applying a layer of Ti to the surface of the substrate applying a ramping layer of material during which material, in addition to Ti, starts to be applied to the Ti layer and wherein the method includes the steps of applying repeating layers of two forms, a first form including MSx, and/or MSex where M is Molybdenum or Tungsten and Ti, and a second form including MSx, and/or MSex, Ti and TiB2 and within this form of layer, layers of the TiB2 material are sandwiched between layers of MSx, and/or MSex and Ti.
Dependencies are inferred from the claim text.