Characterization of Mechanical Milling Cermet Powders Produced by Disintegrator Technology

Helmo Käerdi; Dmitri Goljandin; Priit Kulu; Heikki Sarjas; Valdek Mikli

doi:10.4028/www.scientific.net/KEM.527.148

Paper Titles

Investigation of Residual Stresses and some Elastic Properties of Brush-Plated Gold and Silver Galvanic Coatings
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Experimental Analysis of Steel Plasticity Parameters during Quenching
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Effect of New Superhard Phases Formation on Properties of Composite Processed by SHS
p.137

Recycling of Al-W-B Composite Material
p.143

Characterization of Mechanical Milling Cermet Powders Produced by Disintegrator Technology
p.148

Investigation of TiO₂ Ceramic Surface Conductivity Using Conductive Atomic Force Microscopy
p.154

Dynamic Compression Behavior and Numerical Modeling of Ti-6246 Alloy at Different Temperatures
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Wear Estimation Using 3D Surface Roughness Parameters
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The Analysis of Abrasive Wear of the Helical Grooved Journal Bearing
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 527Characterization of Mechanical Milling Cermet...

Characterization of Mechanical Milling Cermet Powders Produced by Disintegrator Technology

Abstract:

The current paper deals with characterization of TiC−NiMo cermet powders produced by mechanical milling technology. TiC-based cermets scrap was processed by semi-industrial and laboratory disintegrator milling system. Chemical composition, shape and size of produced powders were analyzed. To estimate the properties of recycled cermet powders the sieving analysis, and angularity studies were conducted. The grindability was estimated using specific energy parameter (Es). Considering that viewpoint, the study is focused on angularity studies as the shape of spray powder has considerable influence on spraying efficiency, the quality and reliability of the coating. To describe the angularity of milled powders, spike parameter – quadratic fit (SPQ) was used and experiments for determination of SPQ sensitivity and precision to characterize particles angularity were performed. Uncertainty of measurements demonstrated trustworthiness of results. The standard deviation of SPQ regardless of milling cycles is the same. For use of produced powders as reinforcements in sprayed coatings the technological parameters of powders were studied. Perspective future use of powders as reinforcements in composite coatings as well as abrasives in tooling were demonstrated.

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Periodical:

Key Engineering Materials (Volume 527)

Pages:

148-153

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.527.148

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Online since:

November 2012

Authors:

Helmo Käerdi, Dmitri Goljandin, Priit Kulu, Heikki Sarjas, Valdek Mikli

Keywords:

Angularity, Cermet, Grindability, Morpholoy, Powder

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