초록 ▼

Multilayer protective coatings that are applied over a substrate are disclosed that comprise a plurality of superimposed multilayer units. Each multilayer unit contains two or more superimposed thin layers in which at least two layers are compositionally different. The properties of the resulting co

Multilayer protective coatings that are applied over a substrate are disclosed that comprise a plurality of superimposed multilayer units. Each multilayer unit contains two or more superimposed thin layers in which at least two layers are compositionally different. The properties of the resulting coating are a combination of the properties of the individual layers. One layer of a multilayer unit may provide hardness or wear resistance and another layer may provide lubricity, for example. The thickness of the individual layers can be related to the microscopic surface relief of the substrate to which the protective coating is applied.

대표청구항 ▼

A coating applied over a rigid substrate, said coating comprising a plurality of superimposed multilayer units, each unit comprising at least three compositionally different thin layers and each layer having a thickness sufficient to obtain its bulk coating properties, one of said layers comprising

A coating applied over a rigid substrate, said coating comprising a plurality of superimposed multilayer units, each unit comprising at least three compositionally different thin layers and each layer having a thickness sufficient to obtain its bulk coating properties, one of said layers comprising material for providing lubricity and selected from the group consisting of germanium, disordered transition metal boride material and fluorocarbon polymers, another of said layers for providing oxidation resistance and consisting of a material selected from the group consisting of titanium, carbon, silicon, stainless steel, and aluminum and another of said layers comprising material for providing hardness and wear resistance, and selected from the group consisting of carbon, tungsten and carbon, carbon and aluminum, aluminum and oxygen, titanium and boron, tungsten and boron, silicon and nitrogen, boron and nitrogen, tantalum and carbon, titanium and nitrogen, and titanium and carbon, the properties of said coating being a combination of the individual properties of said layers.