Wear Resistant Press Dies for the Production of Diamond Composites
Werkstofftechnolgische Schriftenreihe
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Beschreibung
In the powder metallurgical process, diamond material composites are
produced by pressing and sintering of a mixture, consisting of diamond
and metal powder like cobalt. Due to the high hardness of diamond, the
surface of press die is easily damaged. To increase the life time of
press dies, thin layers, deposited by PVD, has been employed. First,
the standard tests, such as scratch test and pin-on-disc, were
performed in order to characterize the adhesion and the tribology of
the coatings. The results of standard tests were evaluated by 3D
surface analyzer, SEM, and light microscope. Afterwards, PVD thin
layers were deposited on the inner surface of the dies in order to
analyze and compare their behavior during the compaction process. The
results evidenced remarkable effect of thin PVD coatings on enhancing
wear resistance of the press dies.
Autor*in
Momeni Siavash
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Fertigungstechnik Maschinenbau Werkstoffe