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National Repository of Grey Literature 13 records found  previous11 - 13  jump to record: Search took 0.00 seconds. 
Testing of the impact load of hard wear resistant coatings
 Sobota, Jaroslav ; Fořt, Tomáš ; Grossman, Jan
The dynamic impact wear tester developed in our laboratory has been used to evaluate hard wear resistant coatings. After each test, wear scars were evaluated by means of optical microscope and profilometer. Results of these tests show usability of various types of coatings in dynamic load and enable to optimize the design of the coating/substrate system.
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Testování odolnosti vůči nárazu tvrdých nanokompozitních povlaků
Fořt, Tomáš ; Sobota, Jaroslav ; Grossman, Jan
To evaluate the impact resistance of hard nanocomposite coatings in dynamic loading wear applications an impact test using system developed at the Institute of Scientific Instruments in collaboration with Brno University of Technology has been used. During testing the specimen is cyclically loaded by a ball that impacts of the coating surface. After the test, wear scars were evaluated by means of scanning electron microscope, spectral analyses and profilometer. The impact test offers an important new method for determination of the fracture toughness of hard thin coatings and simulates a wide range of tribological systems.
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Testing of Coating/Substrate System Deposited by CVD and PACVD Methods by Impact Tester
 Fajkus, M. ; Fořt, Tomáš ; Grossman, Jan ; Hořejš, S. ; Sobota, Jaroslav
The dynamic impact wear tester developed in our laboratory has been used to evaluate CVD and PACVD hard coatings deposited in VÚHŽ. After each test, wear scars were evaluated by means of optical microscope and profilometer. Results of these tests show usability of various types of coatings in dynamic load and enable to optimize the design of the coating/substrate system for the particular use.
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