Method for boriding of coatings using high speed electrolytic process
OwnerMustafa K. Ürgen, Servet I. Timur +2inventors
InventorsMustafa K. Ürgen, Servet I. Timur, Kürsat M. Kazmanli, Güldem Kartal
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Abstract
A method for producing a wear and corrosion resistant WC based material coated with one or more metals selected from group IVB, VB and VIB metals (according to CAS system) and Al is disclosed. The method comprises treating of said coated structure with electrochemical boriding treatment in an electrolyte which is substantially free of halogenated compounds wherein the electrolyte comprises alkali carbonates and boron sources and said electrolyte being heated during electrolysis under an induction heating regime having electromagnetic frequency ranging from 50 to 300 kHz during electrolysis.
Claims14
A method for producing a wear and corrosion resistant coated structure, including:
- coating a WC based material with one or more metals selected from group IVB, VB and VIB metals and Al using physical vapor deposition (PVD) to form a coated structure including a WC based material substrate having a PVD metal coating layer thereon;
- and
- treating said coated structure with electrochemical boriding in an electrolyte that comprises alkali carbonates and boron sources and which is substantially free of halogenated compounds, and melting the electrolyte with a high frequency induction heating regime having electromagnetic frequency of between 50 kHz and 300 kHz and maintaining the high frequency induction regime during the electrochemical boriding process;
- performing the electrochemical boriding and high frequency induction heating processes to convert at least a portion of the PVD metal coating layer into a multilayer MeBx structure including layers selected from MeB, MeB2, MeB+MeB2, and MeBx, wherein Me is the one or more metals coated by PVD, and wherein electrochemical boriding is conducted under a current density of 300 mA/cm2.
A method for producing a wear and corrosion resistant coated structure, including:
- coating a metallic structure with one or more metals selected from group IVB, VB and VIB metals and Al using physical vapor deposition (PVD) to form a coated structure including a metal substrate having a PVD metal coating layer thereon;
- and
- treating said coated structure with electrochemical boriding in an electrolyte that comprises alkali carbonates and boron sources and which is substantially free of halogenated compounds, and melting the electrolyte with a high frequency induction heating regime having electromagnetic frequency of between 50 kHz and 300 kHz and maintaining the high frequency induction regime during the electrochemical boriding process;
- performing the electrochemical boriding and high frequency induction heating processes to convert at least a portion of the PVD metal coating layer into a multilayer MeBx structure including layers selected from MeB, MeB2, MeB+MeB2, and MeBx, wherein Me is the one or more metals coated by PVD, and wherein electrochemical boriding is conducted under a current density of 300 mA/cm2.
Dependencies are inferred from the claim text.