Investigation of laser sintering for freeform fabrication of zirconium diboride parts

@article{Leu2012InvestigationOL,
  title={Investigation of laser sintering for freeform fabrication of zirconium diboride parts},
  author={Ming C. Leu and Shashwatashish Pattnaik and Gregory E. Hilmas},
  journal={Virtual and Physical Prototyping},
  year={2012},
  volume={7},
  pages={25 - 36}
}
This paper presents a study wherein the Laser Sintering (LS) process is used to perform additive manufacturing of zirconium diboride (ZrB2) parts. Experiments were conducted to determine values of LS process parameters (laser power, scan speed, energy density, line spacing, and layer thickness) that can be used to improve building of ZrB2 parts. A sacrificial plate with a proper number of layers was first constructed in order to reduce thermal gradients in building the main part. The… 

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References

SHOWING 1-10 OF 57 REFERENCES

Freeform Fabrication of Zirconium Diboride Parts using Selective Laser Sintering

Using the Selective Laser Sintering (SLS) process, both flexural test bars and 3D fuel injector components have been fabricated with zirconium diboride (ZrB2) powder. Stearic acid was selected as the

Laser Sintering of ZrB2

Preliminary results about laser sintering of zirconium diboride (ZrB2), a good ultra high-temperature ceramics candidate, are presented. In order to evaluate a suitable sintering method, single

Selective Laser Sintering of High-density Alumina Ceramic Parts

Manufacturing high temperature ceramic parts with Solid Freeform Fabrication (SFF) technology has been of great research interest lately. Described in this paper is a process based on Selective Laser

Dimensional stability during post-processing of selective laser sintered ceramic preforms

Silicon infiltrated silicon carbide parts have been manufactured using selective laser sintering (SLS). The processing route has been defined, including post-processing steps: formation of a green

Selective Laser Sintering of Polymer-Coated Silicon Carbide Powders

Selective Laser Sintering (SLS) produces three-dimensional objects directly from a computer-aided design (CAD) solid model, without part-specific tooling, by repeatedly depositing thin layers of

Selective laser sintering of alumina with polymer binders

The selective laser sintering (SLS) process is used to prepare test bars from Al2O3/polymer binder powders. Finds that binder‐coated A12O3 particles formed bars that were approximately twice as

Stereolithography of structural complex ceramic parts

A cost-effective method of complex ceramic parts manufacturing using stereolithography has been developed. The process consists in fabricating ceramic pieces by laser polymerization of an UV curable
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