Surface coating of a carbide or a nitride
OwnerH{dot over (a)}kan Hugossoninventor
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Abstract
A surface coating comprising at least one carbide layer having the general formula MQC, wherein M is an element from the group consisting of Sc, Y, La, Ti, Zr, Hf, V, Nb, Ta or any mixture thereof, and Q is an element from the group consisting of Mn, Cr, Fe, Co, Ni, Cu, Mo, Tc, Ru, Rh, Pd, Ag, Re, W, Os, Ir, Pt, Au, Al or any mixture thereof. The layer comprises at least two different crystal structures or parts of such structures, and the relative amounts of M and Q in the layer are within a range in which the energy required for forming, a crystal structure of said carbide is generally equal for said at least two structures. The principle also applicable nitrides.
Claims22
A surface coating comprising at least one carbide layer having the general formula MQC, wherein
- M is an element from the group consisting of Sc, Y, La, Ti, Zr, Hf, V, Nb, Ta or any mixture thereof, and
- Q is an element from the group consisting of Mn, Cr, Fe, Co, Ni, Cu, Mo, Tc, Ru, Rh, Pd, Ag, Re, W, Os, Ir, Pt, Au, Al or any mixture thereof, characterised in that the layer comprises at least two different crystal structures or parts of such structures, and that the relative amounts of M and Q in the layer are within a range in which the energy required for forming a crystal structure of said carbide is generally equal for said at least two structures.
A surface coating comprising at least one nitride layer having the general formula MQN, wherein
- M is an element from the group consisting of Sc, Y, La, Ti, Zr, Hf or any mixture thereof, and
- Q is an element from the group consisting of V, Nb, Ta, Mn, Cr, Fe, Co, Ni, Cu, Mo, Tc, Ru, Rh, Pd, Ag, Re, W, Os, Ir, Pt, Au, Al or any mixture thereof, characterised in that the layer comprises at least two different crystal structures or parts of such structures, and that the relative amounts of M and Q in the layer are within a range in which the energy required for forming a crystal structure of said nitride is generally equal for said at least two structures.
A method of producing a surface coating comprising at least one carbide layer having the general formula MQC, wherein
- M is an element from the group consisting of Sc, Y, La, Ti, Zr, Hf, V, Nb, Ta or any mixture thereof, and
- Q is an element from the group consisting of Mn, Cr, Fe, Co, Ni, Cu Mo, Tc, Ru, Rh, Pd, Ag W, Re, Os, Ir, Pt, Au, Al or any mixture thereof, characterised in that a substrate is subjected to a simultaneous flow of atoms of M and Q under such conditions that the carbide layer is deposited on the substrate, and that at least two different carbide layer structures or parts of such structures are deposited on the substrate, the relative amounts of M and Q directed towards the substrate being chosen such that the energy required for forming a crystal structure of said carbide is generally equal f or said at least two carbide structures.
A method of producing a surface coating comprising at least one nitride layer having the general formula MQN, wherein
- M is an element from the group consisting of Sc, Y, La, Ti, Zr, Hf, or any mixture thereof, and
- Q is an element from the group consisting of V, Nb, Ta, Mn, Cr, Fe, Co, Ni, Cu, Mo, To, Ru, Rh, Pd, Ag, W, Re, Os, Ir, Pt, Au, Al or any mixture thereof, characterised in that a substrate is subjected to a simultaneous flow of atoms of M and Q under such conditions that the nitride is deposited on the substrate, and that at least two different nitride layer structures or parts of such structures are deposited on the substrate, the relative amounts of M and Q directed towards the substrate being chosen such that the energy required for forming a crystal structure of said nitride is generally equal for said at least two nitride structures.
Dependencies are inferred from the claim text.