1) Byeli, A.V., Kukareko, V.A., Lobodaeva, O.V., Wilbur, P.J., Davis, J.A., "High Current Density Ion Implantation and its Application to Improve the Wear Resistance of Ferrous Materials," Wear, V. 203-204, 1997, pp. 596 - 607.

2) Wilbur, P.J., Davis, J.A., Wei, R., Vajo, J.J., Williamson, D.L., "High Current Density, Low Energy, Ion Implantation of AISI-M2 Tool Steel for Tribological Applications," Surface and Coatings Technology V. 83, 1996, pp. 250 - 256.

3) Wei, R., Vajo, J.J., Matossian, J.N., Wilbur, P.J., Davis, J.A., Williamson, D.L., Collins, G.A., "A Comparitive Study of Beam Ion Implantation, Plasma Ion Implantation and Nitriding of AISI 304 Stainless Steel," Surface and Coatings Technology V. 83, 1996, pp. 235 - 242.

4) Wilbur, P.J., "Dual-Use Applications of Ion-Thruster Technology," Proc. of Space Technology and Applications International Forum, Albuguerque, NM, ed. M.S. El-Genk, Amer. Inst. of Physics Conf. Proc. 361, 1996, pp. 155-162.

5) Wei, R., P.J. Wilbur, B.W. Buchholtz and F.M. Kustas, "In Situ Tribological Evaluation of Greases and Solid Lubricants in a Simulated Atomic Oxygen Environment," Tribology Transactions, V. 38, No. 4, 1995, pp. 950-958.

6) Wei, R., P.J. Wilbur, B.W. Buchholtz and F.M. Kustas, "In Situ Tribological Evaluation of Greases and Solid Lubricants in a Simulated Atomic Oxygen Environment," Society of Tribologists and Lubrication Engineers Preprint No. 95-AM-8E-1, May 1995.

7) Miyoshi, K., S. Heidger, A.L. Korenyi-Both, D.T. Jayne, P. Herrera-Fierro, B. Shogrin, P.J. Wilbur, R.L.C. Wu, A. Garscadden and P.N. Barnes, "Physical and Tribological Charactersitics of Ion-Implanted Diamond Films," NASA Tech. Mem. 106682, Nov. 1994.

8) Wei R., B. Shogrin, P.J. Wilbur, O.Ozturk, D.L. Williamson, I. Ivanov, E. Metin, "The Effects of Low-Energy-Nitrogen-Ion Implantation on the Tribological and Microstructural Characteristics of AISI 304 Stainless Steel," J. Tribology, V.116, 1994, pp 870-876.

9) Williamson, D.L., O. Ozturk, R. Wei and P. Wilbur, "Metastable phase formation and enhanced diffusion in f.c.c. alloys under high does, high flux nitrogen implantation at high and low ion energies," Surf. and Coatings Tech., V.65, 1994, pp. 15-23

10) Erdemir, A., F.A. Nichols, X.Z. Pan, R. Wei and P. Wilbur, "Friction and wear performance of ion-beam-deposited diamond-like carbon films on steel substrates," Diamond and Related Mat., V.3, 1 April 1994, pp 119-125.

11) Cooper, C.V., C.P. Beetz, Jr., B.W. Buchholtz, P.J. Wilbur and R. Wei, "Spectroscopic and selected mechanical properties of diamond-like carbon films," Diamond and Related Mat., V.3, 1 April 1994, pp. 534-541.

11) Wilbur, P.J. and B.W. Buchholtz, "Surface Engineering using Ion Thruster Technology," AIAA Paper 94-3235, Joint Propulsion Conference, June 1994, Indianapolis, IN.

12) Wei, Ronghua, Paul J. Wilbur and Samuel C. Wu, "Method and Apparatus for Testing Parts and Materials in a Controlled Environment Such as an Atomic Oxygen Atmosphere," U.S. Patent No. 5,281,535, Jan. 25, 1994.

13) Erdemir, A., F.A. Nichols, X.Z. Pan, R. Wei and P.J. Wilbur, "Friction and Wear Performance of Ion-Beam Deposited Diamond-like Carbon Films on Steel Substrates," Diamond and Related Mat., V.3, 1993, pp. 119-125.

14) Wilbur, Paul J., "Ultrahigh-Current-Density Metal-Ion Implantation and Diamondlike-Hydrocarbon Films for Tribological Applications," Argonne National Laboratory Report ANL/OTM/CR-4, September 1993.

15) Wei, R., P.J. Wilbur and M-J. Liston, "Effects of diamond-like hydrocarbon films on rolling contact fatigue of bearing steels," Diamond and Related Mat., V.2, 1993, pp. 898-903.

16) Williamson, D.L., I.L. Singer, R. Wei and P.J. Wilbur, "Amorphous Fe-Ti-C Phase Produced by Ion Implantation of Iron and it's role in Tribological Behavior," Nucl. Instrum. and Meth., V. B76, 1993, pp. 210-212.

17) Wei, R., P.J. Wilbur, M-J. Liston, and G. Lux, "Rolling-Contact-Fatigue Wear Characteristics of Diamond-like Hydrocarbon Coatings on Steels," Wear, V. 162- 164, 1993, pp. 558-568.

18) Kustas, F.M., M.S. Misra, R. Wei and P.J. Wilbur, "Diamond-like Carbon Coatings on Ti-6Al-4V," Tribology Transactions, V. 36, No. 1, 1993, pp. 113- 119.

19) Wei, R. and P.J. Wilbur, "The Tribological Characteristics of Diamond-like- Carbon-Coated Pure Iron and 304 Stainless Steel," Proceedings of China International Symposium for Youth Tribologists, Chinese Academy of Sciences, August 1992, pp. 160-67.

20) Chabica, M., D.L. Williamson, R. Wei and P.J. Wilbur, "Corrosion Properties of Nitrogen-Ion-Implanted AISI 304 Stainless Steel in a Simulated Human Body Environment," Surf. and Coatings Tech., V. 51, 1992, pp. 24-29.

21) Wei, R., P.J. Wilbur, D.L. Williamson and O. Ozturk, "Tribological and Microstructural Studies of Oxygen-Implanted Ferrite and Austenite," Surf. and Coatings Tech., V. 51, 1992, pp. 133-138.

22) Kustas, F.M., M.S. Misra, R. Wei and P.J. Wilbur, "High Temperature Nitrogen Implantation of Ti-6Al-4V II: Tribological Properties," Surf. and Coatings Tech., V. 51, 1992, pp. 106-111.

23) Kustas, F.M., M.S. Misra, R. Wei, P.J. Wilbur, J.A. Knapp, "High Temperature Nitrogen Implantation of Ti-6Al-4V I: Microstructure Characterization," Surf. and Coatings Tech., V. 51, 1992, pp. 100-105.

24) Wilbur, P.J. and R. Wei, "High-Current-Density Metal-Ion Implantation," Rev. Sci. Instrum., V. 63, No. 4, April 1992, pp. 2491-2493.

25) Williamson, D.L., I. Ivanov, R. Wei and P.J. Wilbur, "Role of Chromium in High- Dose, High-Rate, Elevated Temperature Nitrogen Implantation of Austenitic Stainless Steels," Mat. Sci. Soc. Symp. Proc., V. 235, 1992, pp. 473-478.

26) Wei, R., P.J. Wilbur, A. Erdemir and F.M. Kustas, "The Effects of Beam Energy and Substrate Temperature on the Tribological Properties of Hard-Carbon Films on Aluminum," Surf. and Coatings Tech., V. 51, 1992, pp. 139-145.

27) Wei, R., P.J. Wilbur and F.M. Kustas, "A Rolling Contact Fatigue Study of Hard Carbon Coated M-50 Steel," J. Tribology, V. 114, No. 2, April 1992, pp. 298-303.

28) Erdemir, A., M. Switala, R. Wei and P. Wilbur, "A Tribological Investigation of the Graphite-to-Diamondlike Behavior of Amorphous Carbon Films Ion-Bean-Deposited on Ceramic Substrates," Surf. and Coatings Tech., V. 50, 1991, pp. 17- 23.

29) Wilbur, P.J. and R. Wei, "A Metal Ion Implanter Based on Ion Thruster Technology," International Electric Propulsion Conference Paper 91-065, Viareggio, Italy, Oct. 14, 1991.

30) Sarma, S.V., W.S. Sampath, N. Subramanian and P.J. Wilbur, "Metal Coating Method," U.S. Patent No. 5,032,421, July 16, 1991.

31) Williamson, D.L., R. Wei and P.J. Wilbur, "Effects of Rapid, High-dose, Elevated Temperature Ion Implantation on the Microstructure and Tribology of Ferrous Surfaces," Nucl. Instrum. and Meth., B 56/57, 1991, pp. 625-629.

32) Wei, R., P.J. Wilbur, W.S. Sampath, D.L. Williamson and Li Wang, "Effects of Ion Implantation Conditions on the Tribology of Ferrous Surfaces," J. Tribology, V. 113, Jan. 1991, pp. 166-173.

33) Williamson, D.L., O. Ozturk, S. Glick, R. Wei and P.J. Wilbur, "Microstructure of Ultrahigh-Dose, Nitrogen Implanted Iron and Stainless Steel," Nucl. Instrum. and Meth., V. B 59/60, 1991, pp. 737-741.

34) Wei, R., P.J. Wilbur, D.L. Williamson and O. Ozturk, "Tribological Studies of Ultrahigh Dose Nitrogen-Implanted Iron and Stainless Steel," Nucl. Instrum. and Meth., V. B 59/60, 1991, pp. 731-736.

35) Wei, R., P.J. Wilbur, W.S. Sampath, D.L. Williamson, and L. Wang, "Sliding Wear of Nitrogen Ion-Implanted Stainless Steels," STLE preprint 90-AM-7C-1, May 1990, Lubrication Engineering, V. 47, No. 4, April 1991, pp. 326-334.

36) Williamson, D.L., L. Wang, R. Wei and P.J. Wilbur, "Solid Solution Strengthening of Stainless Steel Surface Layers by Rapid, High-Dose, Elevated Temperature Nitrogen Ion Implantation," Mat. Ltrs. V. 9, No. 9, May 1990, pp. 302-308.

37) Wei, R., P.J. Wilbur, W.S. Sampath, D.L. Williamson, Y. Qu and L. Wang, "Tribological Studies of Ion-Implanted Steel Constituents using an Oscillating Pin-on-Disc Wear Tester," J. Tribology, V. 112, Jan 1990, pp. 27-36.

38) Kustas, F.M., M.S. Misra, and P.J. Wilbur, "Ultrahigh Current Density Nitrogen Implantation of 440C Steel for Improved Rolling Contact Fatigue Lifetimes," Surf. and Coatings Tech., V. 39/40, 1989, pp. 573-585.

39) Wei, R., P.J. Wilbur, W.S. Sampath, D.L. Williamson, Y. Qu, L. Wang, Y. C. Feng and F. Tian, "A Comparative Study of Nitrogen Ion Implantation and Dynamic Mixing of Pure Iron," Proceedings of Industry-University Advanced Materials Conference II, Advanced Materials Institute, F. Smith, ed., March 6-9, 1989, pp. 365-375.

40) Kustas, F.M., M.S. Misra, S.R. Smith, P.J. Wilbur and R.L. Thom, "High Current Density Ion Implantation Processing of 440C Steel Part 1: Implantation Parameters and Rolling Contact Fatigue Improvement," Surface and Coatings Technology, V. 37, pp. 1-13, 1989.

41) Williamson, D.L., Y. Qu, R. Wei, W.S. Sampath and P.J. Wilbur, "Tribological and Mossbauer Studies of Ion-Implanted Iron," Mat. Sci. Soc. Symp. Proc. V. 128, 1989, pp. 409-414.

42) Wilbur, P.J., R. Wei and W.S. Sampath, "High Current Density, Broad Beam Ion Implantation," Materials Sci and Engr. V. A116, pp. 215-220, 1989.

43) Wei, R.H., W.S. Sampath and P.J. Wilbur, "Cross Sectional Transmission Electron Microscopy Studies on Ultrahigh Dose Rate, Ion-Implanted Aluminum," Proceedings of the Shanghai Workshop on Ion Implantation, Hanzhou, China, June 1988, pp. 244-247.

44) Sampath, W.S., F.M. Kustas, R. Wei and P.J. Wilbur, "Surface Slip Retardation by Ion Implantation," Proceedings of the Materials Research Society Symposium, V. 93, 1987, pp. 385-390.

45) Sampath, W.S. and P.J. Wilbur, "Broad Beam Ultrahigh Current Density Ion Implantation," Proceedings of the Materials Research Society Symposium, V. 93, 1987, pp. 349-360.

46) Sampath, W.S. and P.J. Wilbur, "A New Rapid Technique for Characterizing Microstructures of Films Produced by Ion Beams in the Transmission Electron Microscope," Materials Sci. and Engr., V. 90, 1987, pp. 367-371.

47) Sampath, W.S., R. Wei and P.J. Wilbur, "Ultrahigh Current Density Ion Implantation," Journal of Metals, April 1987, pp. 17-19.

48) Sampath, W.S., F.M. Kustas, R. Wei and P.J. Wilbur, "Surface Slip Retardation by Ion Implantation," Materials Research Society Symposium on Materials Modification and Growth using Ion Beams, April 1987. Materials Modification and Growth Using Ion Beams, Mat. Res. Soc. (1987).

49) Sampath, W.S. and P.J. Wilbur, "Broad Beam Ultrahigh Current Density Ion Implantation," Materials Research Society Symposium on Materials Modification and Growth using Ion Beams, April 1987. Materials Modification and Growth Using Ion Beams, Mat. Res. Soc. (1987).

50) Sampath, W.S., R. Wei and P.J. Wilbur, "Effects of Ultrahigh Current Density Ion Implantation on Bulk Microstructure and Bulk Hardness," TMS-AIME Technical Paper A87-21, Feb. 1987.

51) Sampath, W.S., F.M. Kustas and P.J. Wilbur, "Formation of Amorphous Materials by Ion Beam Processing Techniques," Proceedings of the Industry-University Advanced Materials Conference, Denver, Colorado, Feb. 25-27, 1987, The Metallurgical Society of AIME, pp. 359-364.

52) Wilbur, P.J. and W.S. Sampath, "The Effects of Ultrahigh Current Density Ion Implantation on Bulk Microstructure," Proceedings of the Industry-University Advanced Materials Conference, Denver, Colorado, Feb. 25-27, 1987, The Metallurgical Society of AIME, pp. 47-55.

53) Daniels, L.O. and P.J. Wilbur, "Effects of Nitrogen Ion Implantation on Load-Bearing Capacity and Adhesive Wear Behavior in Steels," V International Conference on Ion Beam Modification of Materials, Catania, Italy, June 1986, Part 1, pp. 221-226; also Nucl. Instrum. and Meth. in Phys., B19/20, 1987, pp. 221-226.

54) Sampath, W.S. and P.J. Wilbur, "A New Rapid Technique for Characterizing Microstructures Produced by Ion Beams in the Transmission Electron Microscope," Mat. Sci. and Engr. V. 90, pp. 367-371, 1987, and Surface Modification of Metals by Ion Beams, Elsevier, 1987, pp. 367-371.

55) Wilbur, P.J. and L.O. Daniels, "The Development and Application of an Ion Implanter Based on Ion Thruster Technology," Vacuum, V. 36, No. 1-3, Jan.-Mar. 1986, pp. 5-9.

56) Wilbur, P.J. and L.O. Daniels, "Broad Beam Ion Implantation Research," Proceedings of the 5th International Ion and Plasma Assisted Techniques Conference, Munich, 13-15 May 1985.

57) Robinson, R.S. and P.J. Wilbur, "Passivation of Carbon Steel Using Low Energy Mercury Ion Surface Treatment", J. Vac. Sci. Technol., Vol. 21, No. 1, May/June 1982, pp. 50-55.

58) Wilbur, P.J. and R.S. Robinson, "Passivation of Carbon Steel through Mercury Implanation," NASA CR-165292, February 1981.