Abstract
Laser surface modification of brass with an alloy-ceramic composite powder Ni-Cr-Fe-WC was studied using a two-step process, with powder preplacement followed by laser irradiation. For preplaced coatings of a few 100 μm thick, successfully cladding/alloying was achieved at a laser (CW Nd:YAG) energy density in the range 60-100 J/mm2. Under proper processing conditions, the cavitation erosion resistance was increased by a factor of 9.1. This large increase was attributed to the formation of a Ni-rich matrix reinforced by precipitated carbides and tightly bound WC particles.
| Original language | English |
|---|---|
| Pages (from-to) | 1341-1351 |
| Number of pages | 11 |
| Journal | Materials Research Bulletin |
| Volume | 37 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 1 Jun 2002 |
Keywords
- A. Alloy
- B. Laser deposition
- C. Electron microscopy
- D. Mechanical properties
- D. Microstructure
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
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