A cermet body, including a ceramic portion and a plurality of high magnetic permeability magnetic metallic particles distributed throughout the ceramic portion. Each respective high magnetic permeability magnetic metallic particle has a magnetic permeability of at least 0.0001 H/m. The magnetic metallic particles define a contiguous metallic phase, wherein the cermet body enjoys sufficient bulk electrical conductivity to be machined via electrical discharge machining.

A cermet body, including a ceramic portion and a plurality of high magnetic permeability magnetic metallic particles distributed throughout the ceramic portion. Each respective high magnetic permeability magnetic metallic particle has a magnetic permeability of at least 0.0001 H/m. The magnetic metallic particles define a contiguous metallic phase, wherein the cermet body enjoys sufficient bulk electrical conductivity to be machined via electrical discharge machining.

A method of forming an insulated composite piston head may include: creating a preformed aluminum or aluminum alloy foam core; suspending the preformed foam core in a piston head mold; forming a molded piston head and removing it from the mold; depositing an insulating material on at least one surface of the molded piston head; performing at least one machining operation on the molded piston head so it conforms to a predetermined specification for the insulated composite piston head; and optionally applying a lubricious piston coating to at least a portion of the outer surface of the insulated composite piston head.

A method of forming an insulated composite piston head may include: creating a preformed aluminum or aluminum alloy foam core; suspending the preformed foam core in a piston head mold; forming a molded piston head and removing it from the mold; depositing an insulating material on at least one surface of the molded piston head; performing at least one machining operation on the molded piston head so it conforms to a predetermined specification for the insulated composite piston head; and optionally applying a lubricious piston coating to at least a portion of the outer surface of the insulated composite piston head.

A coated aluminum piston, for an internal combustion engine includes an area of the piston having a plasma oxide layer which is sealed with a coating that comprises a polysilazane-based, a water glass-based or polysiloxane-based polymer. A method of coating the piston is also provided.

A coated aluminum piston, for an internal combustion engine includes an area of the piston having a plasma oxide layer which is sealed with a coating that comprises a polysilazane-based, a water glass-based or polysiloxane-based polymer. A method of coating the piston is also provided.

The present invention relates to a sealing element and/or guide ring manufactured from a composition comprising: i) 50% to 98% by weight of polytetrafluoroethylene and/or modified PTFE, ii) 1% to 49% by weight of perfluoroalkoxy polymer and iii) 1% to 49% by weight of an inorganic filler selected from the group comprising charcoal, graphite, glass fibers, carbon fibers, molybdenum disulfide, metals such as copper, alloys such as bronze, ceramic particles such as aluminum oxide and any desired mixtures of two or more of the aforementioned substances.

An insulated composite piston head that includes three or more layers is formed and used in a combustion engine. The first layer is an aluminum or aluminum alloy foam core. The second layer is a metal layer that at least partially encapsulates the foam core; wherein the metal layer is selected to be aluminum or an aluminum alloy. The third layer is a layer of an insulating material located on at least one surface of the metal layer. The deposition of the insulating layer is accomplished via the use of a coaxial laser process.

An insulated composite piston head that includes three or more layers is formed and used in a combustion engine. The first layer is an aluminum or aluminum alloy foam core. The second layer is a metal layer that at least partially encapsulates the foam core; wherein the metal layer is selected to be aluminum or an aluminum alloy. The third layer is a layer of an insulating material located on at least one surface of the metal layer. The deposition of the insulating layer is accomplished via the use of a coaxial laser process.

This vehicle mechanical component includes a mechanical component body, a heat insulating layer formed on the mechanical component body, and a protective layer formed on the heat insulating layer and including an inorganic compound that includes an alkoxide and scale-like inorganic solid particles dispersed in the inorganic compound.