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Coating systems which provide corrosion resistance and, optionally, lubrication, for threaded connections are disclosed. The compositions comprise a first coating composition comprising polymer matrices of polyimides or epoxies which are modified with small amounts of a fluorine containing polymer.

Coating systems which provide corrosion resistance and, optionally, lubrication, for threaded connections are disclosed. The compositions comprise a first coating composition comprising polymer matrices of polyimides or epoxies which are modified with small amounts of a fluorine containing polymer. Also present in the coating compositions are corrosion inhibiting agents and inorganic particles having a mean diameter of between approximately 10 nm and 10 μm. Solid lubricants, which may include at least one of PTFE, HDPE, Graphite, and MoS2, are optionally added to provide the first coating with a low coefficient of friction. The coating systems may further comprise a second coating composition, comprising a solid lubricant dispersed within an epoxy resin and a solvent. The first and second coating compositions are deposited on at least a portion of at least one of the pin and box members of the threaded connections.

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1. A threaded joint, comprising: a pin member and a box member, wherein the pin member possesses a first thread portion adapted to mate with a second thread portion of the box member;a first coating composition deposited on the thread portion of at least one of the pin and box members, comprising: a

1. A threaded joint, comprising: a pin member and a box member, wherein the pin member possesses a first thread portion adapted to mate with a second thread portion of the box member;a first coating composition deposited on the thread portion of at least one of the pin and box members, comprising: a polymer selected from the group consisting of epoxies and polyimides;about 0.5 to about 15 wt. % of a perfluoropolyether;about 5 to about 15 wt. % of at least one of an anticorrosion compound selected from the group consisting of a zinc calcium strontium orthophosphate silicate hydrate compound, a zinc calcium aluminum strontium orthophosphate polyphosphate silicate hydrate, a zinc aluminum molybdenum orthophosphate hydrate, a zinc nitroisophthalate, and a zinc phosphomolybdate; andabout 10 to about 15 wt. % of an adhesion additive comprising zinc oxide having a mean diameter ranging between approximately 10 nm to approximately 10 μm, said zinc oxide provided in an effective amount to promote adhesion of the first coating composition to the thread portion;wherein the balance of the first coating composition is comprised of the polymer and wherein the percentage of each component is on the basis of the total weight of the first coating composition. 2. The threaded joint of claim 1, wherein the perfluoropolyether chemically reacts with the polymer so as to form a plurality of covalent bonds between the polymer and the perfluoropolyether. 3. The threaded joint of claim 2, wherein the perfluoropolyether is condensable with the polymer. 4. The threaded joint of claim 1, wherein the first coating composition comprises a single layer. 5. The threaded joint of claim 1, wherein the first coating composition further comprises about 3 to about 30 wt. % of a solid lubricant. 6. The threaded joint of claim 5, wherein the solid lubricant comprises at least one of high density polyethylene (HDPE), polytetrafluoroethylene (PTFE), graphite, and molybdenum disulfide (MoS2). 7. The threaded joint of claim 5, wherein the friction coefficient of the first coating composition ranges between approximately 0.03 and approximately 0.10. 8. The threaded joint of claim 1 or claim 5, wherein the mean diameter of the zinc oxide ranges between about 10 to about 300 nm. 9. The threaded joint of claim 1 or claim 5, wherein the first coating composition further comprises an inorganic reinforcement. 10. The threaded joint of claim 9, wherein the inorganic reinforcement possesses a mean diameter less than about 300 nm. 11. The threaded joint of claim 10, wherein the reinforcement is present in an amount ranging from about 5 to about 10 wt %, based on the total weight of the first composition. 12. The threaded joint of claim 11, wherein the reinforcement comprises at least one of silicon carbide (SiC), titanium dioxide (TiO2), aluminum oxide (Al2O3), and silicon dioxide (SiO2). 13. The threaded joint of claim 1 or claim 5, wherein the first coating composition further comprises at least one of: about 3 to about 8 wt % zinc;about 1 to about 5 wt. % zinc(II)phosphate;about 1 to about 5 wt. % Carbon black; andabout 10 to about 20 wt. % of polydimethylsiloxane;wherein the amount of each is based upon the total weight of the first composition. 14. The threaded joint of claim 1 or claim 5, wherein the wear coefficient of the first coating composition is less than approximately 2.0×10−6 mm3/Nm. 15. The threaded joint of claim 1 or claim 5, wherein the first coating composition exhibits substantially no corrosion up to about 1000 h of exposure as tested according to ASTM B 117. 16. The threaded joint of claim 1 or claim 5 wherein a second coating composition layer comprising a dry film lubricant is deposited on a thread portion of at least one of the pin and the box members. 17. The threaded joint of claim 16, wherein the first coating composition is deposited on the pin member and the second coating composition is deposited on the box member. 18. The threaded joint of claim 16, wherein the second coating composition comprises: about 4 to about 16 wt. % polytetrafluoroethylene (PTFE);about 8 to about 24 wt. % of a reactive epoxy;about 1 to about 6 wt. % titanium dioxide; anda solvent;wherein the amount of each component is on the basis of the total weight of the second coating composition. 19. The coating composition of claim 16, wherein the combined thickness of the first and second coatings layers is less than about 80 μm. 20. The coating composition of claim 19, wherein the first coating composition comprises a layer that possesses a thickness less than about 40 μm. 21. The coating composition of claim 19, wherein the second coating composition comprises a layer that possesses a thickness less than about 30 μm. 22. The threaded joint of claim 16, wherein the thickness of the first and second coating compositions are approximately equal. 23. The threaded joint of claim 1 or claim 5, wherein the pin and box members are metallic. 24. The threaded joint of claim 1, wherein the at least one of the anticorrosion compound is selected from the group consisting of a zinc calcium strontium orthophosphate silicate hydrate compound, a zinc calcium aluminum strontium orthophosphate polyphosphate silicate hydrate, a zinc aluminum molybdenum orthophosphate hydrate, and a zinc phosphomolybdate. 25. A threaded joint, comprising: a pin member and a box member, wherein the pin member possesses a first thread portion adapted to mate with a second thread portion of the box member;a first coating composition deposited on the thread portion of at least one of the pin and box members, comprising: a polymer;about 0.5 to about 15 wt. % of a fluorine containing polymer modifier;about 5 to about 15 wt. % of a corrosion inhibiting agent comprising at least one metal with a functional group, wherein the metal is selected from the group consisting of Zn, Ca, Mg, Sr, and Al and the functional group is selected from the group consisting of phosphate functional groups, molybdate functional groups, phosphomolybdate functional groups, and phosphosilicate functional groups; andabout 10 to about 15 wt. % of an adhesion additive comprising inorganic particles having a mean diameter ranging between approximately 10 nm and approximately 10 μm;a second coating composition comprising a dry film lubricant dispersed within an epoxy deposited on the thread portion of at least one of the pin and the box members;wherein the balance of the first composition is comprised of the polymer and wherein the percentage of each component is on the basis of the total weight of the first coating composition. 26. The threaded joint of claim 25, wherein the polymer is selected from the group consisting of epoxies and polyimides. 27. The threaded joint of claim 25, wherein the polymer modifier comprises a perfluoropolyether. 28. The threaded joint of claim 27, wherein the perfluoropolyether chemically reacts with the polymer so as to form a plurality of covalent bonds between the polymer and the perfluoropolyether. 29. The threaded joint of claim 28, wherein the perfluoropolyether is condensable with the polymer. 30. The threaded joint of claim 25, wherein the first coating composition comprises a single layer. 31. The threaded joint of claim 25, wherein the inorganic particles comprise zinc oxide having a mean diameter ranging between about 10 to about 300 nm. 32. The threaded joint of claim 31, wherein the first coating composition further comprises about 3 to about 30 wt. % of a solid lubricant. 33. The threaded joint of claim 32, wherein the solid lubricant comprises at least one of high density polyethylene (HDPE), polytetrafluoroethylene (PTFE), graphite, and molybdenum disulfide (MoS2). 34. The threaded joint of claim 32, wherein the friction coefficient of the first coating composition ranges between approximately 0.03 and approximately 0.10. 35. The threaded joint of claim 25 or claim 32, wherein the first coating composition further comprises an inorganic reinforcement. 36. The threaded joint of claim 35, wherein the inorganic reinforcement possesses a mean diameter less than about 300 nm. 37. The threaded joint of claim 36, wherein the reinforcement is present in an amount ranging from about 5 to about 10 wt. %, based on the total weight of the first composition. 38. The threaded joint of claim 37, wherein the reinforcement comprises at least one of silicon carbide (SiC), titanium dioxide (TiO2), aluminum oxide (Al2O3), and silicon dioxide (SiO2). 39. The threaded joint of claim 25 or claim 32, wherein the first coating composition further comprises at least one of: about 3 to about 8 wt % zinc;about 1 to about 5 wt. % zinc (II) phosphate;about 1 to about 5 wt. % Carbon black; andabout 10 to about 20 wt. % of the polydimethylsiloxane;wherein the amount of each is based upon the total weight of the first composition. 40. The threaded joint of claim 25 or claim 32, wherein the wear coefficient of the first coating composition is less than approximately 2.0×10˜6 mm3/Nm. 41. The threaded joint of claim 25 or claim 32, wherein the first coating composition exhibits substantially no corrosion up to about 1000 h of exposure as tested according to ASTM B 117. 42. The threaded joint of claim 25 or claim 32, wherein the pin and box members are metallic. 43. The threaded joint of claim 25, wherein the first coating composition is deposited on the pin member and the second coating composition is deposited on the box member. 44. The threaded joint of claim 25, wherein the second coating composition comprises: about 4 to about 16 wt. % polytetrafluoroethylene (PTFE);about 8 to about 24 wt. % of a reactive epoxy;about 1 to about 6 wt. % titanium dioxide; anda solvent;wherein the amount of each component is on the basis of the total weight of the second composition. 45. The threaded joint of claim 25, wherein the thickness of the first and second coating compositions are approximately equal. 46. A method of protecting a threaded joint, comprising: providing a pin member and a box member, wherein the pin member possesses a first thread portion adapted to mate with a second thread portion of the box member;providing a first coating composition comprising: a polymer;about 0.5 to about 15 wt. % of a fluorine containing polymer modifier;about 5 to about 15 wt. % of a corrosion inhibiting agent comprising at least one metal with a functional group, wherein the metal is selected from the group consisting_of Zn, Ca, Mg, Sr, and Al and the functional group is selected from the group consisting of phosphate functional groups, molybdate functional groups, phosphomolybdate functional groups, and phosphosilicate functional groups; andabout 10 to about 15 wt. % of an adhesion additive comprising inorganic particles having a mean diameter ranging between approximately 10 nm and approximately 10 μm;wherein the balance of the first composition is comprised of the polymer and wherein the percentage of each component is on the basis of the total weight of the first coating composition;providing a second coating composition comprising a dry film lubricant dispersed within an epoxy; andapplying each of the first and the second coating compositions on at least the thread portion of at least one of the pin and box members. 47. The method of claim 46, wherein the polymer is selected from the group consisting of epoxies and polyimides. 48. The method of claim 46, wherein the polymer modifier comprises a perfluoropolyether. 49. The method of claim 48, wherein the perfluoropolyether chemically reacts with the polymer so as to form a plurality of covalent bonds between the polymer and the perfluoropolyether. 50. The method of claim 49, wherein the perfluoropolyether is condensable with the polymer. 51. The method of claim 46, wherein the first coating composition comprises a single layer. 52. The method of claim 46, wherein the inorganic particles comprise zinc oxide having a mean diameter ranging between about 10 to about 300 nm. 53. The method of claim 52, wherein the first coating composition further comprises about 3 to 30 wt. % of a solid lubricant. 54. The method of claim 53, wherein the solid lubricant comprises at least one of high density polyethylene (HDPE), polytetrafluoroethylene (PTFE), graphite, and molybdenum disulfide (MoS2). 55. The method of claim 46 or claim 53, wherein the first coating composition further comprises an inorganic reinforcement. 56. The method of claim 55, wherein the inorganic reinforcement possesses a mean diameter less than about 300 nm. 57. The method of claim 56, wherein the reinforcement is present in an amount ranging from about 5 to about 10 wt. %, based on the total weight of the first composition. 58. The method of claim 57, wherein the reinforcement comprises at least one of silicon carbide (SiC), titanium dioxide (TiO2), aluminum oxide (Al2O3), and silicon dioxide (SiO2). 59. The method of claim 46 or claim 53, wherein the first coating composition further comprises at least one of: about 3 to about 8 wt % zinc;about 1 to about 5 wt. % zinc(II)phosphate;about 1 to about 5 wt. % Carbon black; andabout 10 to about 20 wt. % of the polydimethylsiloxane;wherein the amount of each is based upon the total weight of the first coating composition. 60. The method of claim 46 or claim 53, wherein the first coating composition is deposited on the pin member and the second coating composition is deposited on the box member. 61. The method of claim 46 or claim 53, wherein the dry film lubricant comprises a solid lubricant dispersed within a polymer matrix and a solvent. 62. The method of claim 61, wherein the dry film lubricant comprises at least one of a self-lubricating film and a metal alloy. 63. The method of claim 46 or claim 53, wherein the second coating composition comprises: about 4 to about 16 wt. % polytetrafluoroethylene (PTFE);about 8 to about 24 wt. % of a reactive epoxy;about 1 to about 6 wt. % titanium dioxide; anda solvent;wherein the amount of each component is on the basis of the total weight of the second coating composition. 64. The method of claim 46 or claim 53, wherein the thickness of the first and second coating compositions are approximately equal. 65. The method of claim 46 or claim 53, further comprising curing at least one of the first and second coating compositions at a temperature of less than about 150° C. 66. The method of claim 46 or claim 53, wherein the pin and box members are metallic. 67. The method of claim 46 or claim 53, wherein at least one of the pin and the box members are subjected to a surface treatment in order to improve the adherence of the coating to the surface of said pin and box members. 68. The method of claim 67, wherein the surface treatment comprises at least one of sand blasting, phosphatization, and copper plating. 69. A threaded joint, comprising: a pin member and a box member, wherein the pin member possesses a first thread portion adapted to mate with a second thread portion of the box member, wherein at least one surface of the pin or the box member is sandblasted;a first coating composition deposited on the thread portion of the pin member, comprising: an epoxy;about 0.5 to about 15 wt. % of a perfluoropolyether;about 5 to about 15 wt. % of at least one of an anticorrosion compound selected from the group consisting of a zinc calcium strontium orthophosphate silicate hydrate compound, a zinc calcium aluminum strontium orthophosphate polyphosphate silicate hydrate, a zinc aluminum molybdenum orthophosphate hydrate, a zinc nitroisophthalate, and a zinc phosphomolybdate; andabout 10 to about 15 wt. % of an adhesion additive comprising zinc oxide having a mean diameter ranging between approximately 10 nm to approximately 10 μm, said adhesion additive provided in an effective amount to promote adhesion of the first coating composition to the thread portion;wherein the balance of the first coating composition is comprised of the epoxy and wherein the percentage of each component is on the basis of the total weight of the first coating composition; anda second coating composition deposited on the thread portion of the box member, comprising: about 4 to about 16 wt. % polytetrafluoroethylene (PTFE);about 8 to about 24 wt. % of a reactive epoxy;about 1 to about 6 wt. % titanium dioxide; anda solvent;wherein the amount of each component is on the basis of the total weight of the second coating composition. 70. The threaded joint of claim 69, wherein the first coating composition further comprises about 3 to about 30 wt. % of a solid lubricant. 71. The threaded joint of claim 70, wherein the solid lubricant comprises at least one of high density polyethylene (HDPE), polytetrafluoroethylene (PTFE), graphite, and molybdenum disulfide (MoS2). 72. The threaded joint of claim 69, wherein the threaded portion of the pin member comprises a first metal surface and the first coating composition is directly deposited on the first metal surface, and the threaded portion of the box member comprises a second metal surface and the second coating composition is directly deposited on the second metal surface.