Accession Number : ADP001662

Title :   Mechanical Properties and Microstructure of Fe Alloys Implanted with Ti and C,


Personal Author(s) : Follstaedt,D. M.

Report Date : 1983

Pagination or Media Count : 9

Abstract : Iron-based alloys implanted with Ti and C are of increasing interest because of their favorable surface properties. Similar improved surface properties are found for alloys into which only Ti was deliberately implanted, but which also acquired C at the surface during the implantation. Most notable of these properties are reduced friction coefficients and wear depths relative to valves for the unimplanted surface. Friction is typically reduced by approximately 50% and wear by up to approximately 90% in unlubricated pin-on-disc tests when the discs are implanted. Moreover, these results are obtained on a wide range fo steels (Knoop hardnesses from 180 to 789) with both hard and soft pin, materials (440 C and 304 stainless steels, respectively). Tests at other laboratories on 52100 bearing steel show reduced wear and reduced friction during lubricated testing as well. (Author)

Descriptors :   *Ion beams, *Ion implantation, *Mixing, *Workshops, *Iron alloys, Stainless steel, Microstructure, Mechanical properties, Surface properties, Titanium, Friction, Reduction, Coefficients, Bearings, Carbon

Distribution Statement : APPROVED FOR PUBLIC RELEASE