The Analysis of Resistance to Brittle Cracking of Tungsten Doped TiB2 Coatings Obtained by Magnetron Sputtering
| Autor: | Sylwia Sowa, Artur Piasek, Jerzy Smolik, Joanna Kacprzyńska-Gołacka |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
nanoindentation PVD coatings Modulus chemistry.chemical_element Surfaces and Interfaces Sputter deposition engineering.material Nanoindentation Tungsten Microstructure fracture toughness Surfaces Coatings and Films Brittleness Fracture toughness Coating chemistry lcsh:TA1-2040 Materials Chemistry engineering Composite material lcsh:Engineering (General). Civil engineering (General) brittle cracking |
| Zdroj: | Coatings Volume 10 Issue 9 Coatings, Vol 10, Iss 807, p 807 (2020) |
| ISSN: | 2079-6412 |
| Popis: | In this work, the authors present the possibility of characterization of the fracture toughness in mode I (KIC) for TiB2 and TiB2 coatings doped with different concentration of W (3%, 6% and 10%). The Young&rsquo s modulus, hardness and fracture toughness of this coatings are extracted from nanoindentation experiments. The fracture toughness was evaluated using calculation of crack length measurement. An important observation is that increasing tungsten concentration in the range 0&ndash 10% changes the microstructure of the investigated coatings: from columnar structure for TiB2 coating to nano-composite structure for Ti-B-W (10%) coating. It can be concluded that doping with concentration 10 at.% W causes an increase of the fracture toughness for the tested coatings. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|