Microstructure Investigation of WC-Based Coatings Prepared by HVOF onto AZ31 Substrate
In this paper, three commercial cermet powders, WC-Co-Cr, WC-Co and WC-Cr<sub>3</sub>C<sub>2</sub>-Ni, were sprayed by the High Velocity Oxy Fuel (HVOF) method onto magnesium alloy AZ31 substrate. The coatings were investigated in terms of their microstructure, phase analysis...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-12-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/15/1/40 |
| _version_ | 1797498519002546176 |
|---|---|
| author | Ewa Jonda Leszek Łatka Anna Tomiczek Marcin Godzierz Wojciech Pakieła Paweł Nuckowski |
| author_facet | Ewa Jonda Leszek Łatka Anna Tomiczek Marcin Godzierz Wojciech Pakieła Paweł Nuckowski |
| author_sort | Ewa Jonda |
| collection | DOAJ |
| description | In this paper, three commercial cermet powders, WC-Co-Cr, WC-Co and WC-Cr<sub>3</sub>C<sub>2</sub>-Ni, were sprayed by the High Velocity Oxy Fuel (HVOF) method onto magnesium alloy AZ31 substrate. The coatings were investigated in terms of their microstructure, phase analysis and residual stress. The manufactured coatings were analyzed extensively using optical microscopy (OM), X-ray diffraction (XRD), scanning (SEM) and transmission electron microscopy (TEM). Based on microstructure studies, it was noted that the coatings show satisfactory homogeneity. XRD analysis shows that in WC-Co, WC-Co-Cr and WC-Cr<sub>3</sub>C<sub>2</sub>-Ni coatings, main peaks are related to WC. Weaker peaks such as W<sub>2</sub>C, Co<sub>0.9</sub>W<sub>0.1</sub>, Co and W for WC-Co and W<sub>2</sub>C, Cr<sub>3</sub>C<sub>2</sub> and Cr<sub>7</sub>C<sub>3</sub> for WC-Cr<sub>3</sub>C<sub>2</sub>-Ni also occur. In all cermet coatings, linear stress showed compressive nature. In WC-Co and WC-Cr<sub>3</sub>C<sub>2</sub>-Ni, residual stress had a similar value, while in WC-Co-Cr, linear stress was lower. It was also proved that spraying onto magnesium substrate causes shear stress in the WC phase, most likely due to the low elastic modulus of magnesium alloy substrate. |
| first_indexed | 2024-03-10T03:34:27Z |
| format | Article |
| id | doaj.art-1ed3be3734c24d4089790c0c2d91a8a4 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T03:34:27Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-1ed3be3734c24d4089790c0c2d91a8a42023-11-23T11:47:09ZengMDPI AGMaterials1996-19442021-12-011514010.3390/ma15010040Microstructure Investigation of WC-Based Coatings Prepared by HVOF onto AZ31 SubstrateEwa Jonda0Leszek Łatka1Anna Tomiczek2Marcin Godzierz3Wojciech Pakieła4Paweł Nuckowski5Department of Engineering Materials and Biomaterials, Silesian University of Technology, 18a Konarskiego Str., 44100 Gliwice, PolandDepartment of Metal Forming, Welding and Metrology, Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, 5 Łukasiewicza Str., 50371 Wroclaw, PolandScientific and Didactic Laboratory of Nanotechnology and Material Technologies, Faculty of Mechanical Engineering, Silesian University of Technology, 7a Towarowa Str., 44100 Gliwice, PolandCentre of Polymer and Carbon Materials Polish Academy of Sciences, 34 M. Curie-Skłodowskiej Str., 41819 Zabrze, PolandDepartment of Engineering Materials and Biomaterials, Silesian University of Technology, 18a Konarskiego Str., 44100 Gliwice, PolandMaterials Research Laboratory, Faculty of Mechanical Engineering, Silesian University of Technology, 18a Konarskiego Str., 44100 Gliwice, PolandIn this paper, three commercial cermet powders, WC-Co-Cr, WC-Co and WC-Cr<sub>3</sub>C<sub>2</sub>-Ni, were sprayed by the High Velocity Oxy Fuel (HVOF) method onto magnesium alloy AZ31 substrate. The coatings were investigated in terms of their microstructure, phase analysis and residual stress. The manufactured coatings were analyzed extensively using optical microscopy (OM), X-ray diffraction (XRD), scanning (SEM) and transmission electron microscopy (TEM). Based on microstructure studies, it was noted that the coatings show satisfactory homogeneity. XRD analysis shows that in WC-Co, WC-Co-Cr and WC-Cr<sub>3</sub>C<sub>2</sub>-Ni coatings, main peaks are related to WC. Weaker peaks such as W<sub>2</sub>C, Co<sub>0.9</sub>W<sub>0.1</sub>, Co and W for WC-Co and W<sub>2</sub>C, Cr<sub>3</sub>C<sub>2</sub> and Cr<sub>7</sub>C<sub>3</sub> for WC-Cr<sub>3</sub>C<sub>2</sub>-Ni also occur. In all cermet coatings, linear stress showed compressive nature. In WC-Co and WC-Cr<sub>3</sub>C<sub>2</sub>-Ni, residual stress had a similar value, while in WC-Co-Cr, linear stress was lower. It was also proved that spraying onto magnesium substrate causes shear stress in the WC phase, most likely due to the low elastic modulus of magnesium alloy substrate.https://www.mdpi.com/1996-1944/15/1/40High Velocity Oxy FuelAZ31 magnesium alloymicrostructureX-ray diffractionresidual stress analysis—sin<sup>2</sup>ψ method |
| spellingShingle | Ewa Jonda Leszek Łatka Anna Tomiczek Marcin Godzierz Wojciech Pakieła Paweł Nuckowski Microstructure Investigation of WC-Based Coatings Prepared by HVOF onto AZ31 Substrate Materials High Velocity Oxy Fuel AZ31 magnesium alloy microstructure X-ray diffraction residual stress analysis—sin<sup>2</sup>ψ method |
| title | Microstructure Investigation of WC-Based Coatings Prepared by HVOF onto AZ31 Substrate |
| title_full | Microstructure Investigation of WC-Based Coatings Prepared by HVOF onto AZ31 Substrate |
| title_fullStr | Microstructure Investigation of WC-Based Coatings Prepared by HVOF onto AZ31 Substrate |
| title_full_unstemmed | Microstructure Investigation of WC-Based Coatings Prepared by HVOF onto AZ31 Substrate |
| title_short | Microstructure Investigation of WC-Based Coatings Prepared by HVOF onto AZ31 Substrate |
| title_sort | microstructure investigation of wc based coatings prepared by hvof onto az31 substrate |
| topic | High Velocity Oxy Fuel AZ31 magnesium alloy microstructure X-ray diffraction residual stress analysis—sin<sup>2</sup>ψ method |
| url | https://www.mdpi.com/1996-1944/15/1/40 |
| work_keys_str_mv | AT ewajonda microstructureinvestigationofwcbasedcoatingspreparedbyhvofontoaz31substrate AT leszekłatka microstructureinvestigationofwcbasedcoatingspreparedbyhvofontoaz31substrate AT annatomiczek microstructureinvestigationofwcbasedcoatingspreparedbyhvofontoaz31substrate AT marcingodzierz microstructureinvestigationofwcbasedcoatingspreparedbyhvofontoaz31substrate AT wojciechpakieła microstructureinvestigationofwcbasedcoatingspreparedbyhvofontoaz31substrate AT pawełnuckowski microstructureinvestigationofwcbasedcoatingspreparedbyhvofontoaz31substrate |