Method for producing hard-surfaced tools and machine components
Patent
·
OSTI ID:6270033
In one aspect, the invention comprises a method for producing tools and machine components having superhard crystalline-ceramic work surfaces. Broadly, the method comprises two steps: A tool or machine component having a ceramic near-surface region is mounted in ion-implantation apparatus. The region then is implanted with metal ions to form, in the region, a metastable alloy of the ions and said ceramic. The region containing the alloy is characterized by a significant increase in hardness properties, such as microhardness, fracture-toughness, and/or scratch-resistance. The resulting improved article has good thermal stability at temperatures characteristic of typical tool and machine-component uses. The method is relatively simple and reproducible.
- Assignee:
- The United States of America as represented by the United States Department of Energy
- Patent Number(s):
- US 4532149
- OSTI ID:
- 6270033
- Country of Publication:
- United States
- Language:
- English
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