Influence of thermal sintering protocol on materials properties of tungsten carbide alloy (WC-17%Co) components by binder jet printing
Binder jet is a type of 3D printing technique that operates at low temperature and print objects to its near net shape. It enables subsequent post shaping process to be omitted, possibly cutting down on processing steps and cost. Here we report the processing and associated mechanical properties of...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2020
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| Online Access: | https://hdl.handle.net/10356/138629 |
| _version_ | 1824454946391588864 |
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| author | Low, Tammy Chien-Yu |
| author2 | Tan Kwan Wee |
| author_facet | Tan Kwan Wee Low, Tammy Chien-Yu |
| author_sort | Low, Tammy Chien-Yu |
| collection | NTU |
| description | Binder jet is a type of 3D printing technique that operates at low temperature and print objects to its near net shape. It enables subsequent post shaping process to be omitted, possibly cutting down on processing steps and cost. Here we report the processing and associated mechanical properties of tungsten-carbide-cobalt alloy (WC-17%Co) components by 3D binder jet printing. First, the WC-17%Co powder were printed as green samples in the form of cuboid shape by binder jet printing. The green samples were then sintered in vacuum at 1350°C and 1400°C for a duration of 2-3 hours. A key finding is immersing binder jet printed WC-17%Co components in a sand bed for thermal sintering enabled 3D shape control and uniform shrinkage. WC-17%Co components sintered above 1400 °C had the highest density and lowest porosity of 13.13 g/cm3 and ~0.17%, respectively, as well as the highest hardness measurement of 1381 HV10. We conducted preliminary finite-element analytical simulations to correlate and understand deformation mechanisms in the ceramic WC under compression. Our results suggest improvements in thermal sintering can enable shape control and improvement of associated mechanical properties in 3D binder jet printed metal components for advanced applications such as tool inserts. |
| first_indexed | 2025-02-19T03:30:23Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/138629 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:30:23Z |
| publishDate | 2020 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1386292023-03-04T15:44:47Z Influence of thermal sintering protocol on materials properties of tungsten carbide alloy (WC-17%Co) components by binder jet printing Low, Tammy Chien-Yu Tan Kwan Wee School of Materials Science and Engineering Advanced Remanufacturing and Technology Centre kwtan@ntu.edu.sg Engineering::Materials Binder jet is a type of 3D printing technique that operates at low temperature and print objects to its near net shape. It enables subsequent post shaping process to be omitted, possibly cutting down on processing steps and cost. Here we report the processing and associated mechanical properties of tungsten-carbide-cobalt alloy (WC-17%Co) components by 3D binder jet printing. First, the WC-17%Co powder were printed as green samples in the form of cuboid shape by binder jet printing. The green samples were then sintered in vacuum at 1350°C and 1400°C for a duration of 2-3 hours. A key finding is immersing binder jet printed WC-17%Co components in a sand bed for thermal sintering enabled 3D shape control and uniform shrinkage. WC-17%Co components sintered above 1400 °C had the highest density and lowest porosity of 13.13 g/cm3 and ~0.17%, respectively, as well as the highest hardness measurement of 1381 HV10. We conducted preliminary finite-element analytical simulations to correlate and understand deformation mechanisms in the ceramic WC under compression. Our results suggest improvements in thermal sintering can enable shape control and improvement of associated mechanical properties in 3D binder jet printed metal components for advanced applications such as tool inserts. Bachelor of Engineering (Materials Engineering) 2020-05-11T05:19:29Z 2020-05-11T05:19:29Z 2020 Final Year Project (FYP) https://hdl.handle.net/10356/138629 en application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Materials Low, Tammy Chien-Yu Influence of thermal sintering protocol on materials properties of tungsten carbide alloy (WC-17%Co) components by binder jet printing |
| title | Influence of thermal sintering protocol on materials properties of tungsten carbide alloy (WC-17%Co) components by binder jet printing |
| title_full | Influence of thermal sintering protocol on materials properties of tungsten carbide alloy (WC-17%Co) components by binder jet printing |
| title_fullStr | Influence of thermal sintering protocol on materials properties of tungsten carbide alloy (WC-17%Co) components by binder jet printing |
| title_full_unstemmed | Influence of thermal sintering protocol on materials properties of tungsten carbide alloy (WC-17%Co) components by binder jet printing |
| title_short | Influence of thermal sintering protocol on materials properties of tungsten carbide alloy (WC-17%Co) components by binder jet printing |
| title_sort | influence of thermal sintering protocol on materials properties of tungsten carbide alloy wc 17 co components by binder jet printing |
| topic | Engineering::Materials |
| url | https://hdl.handle.net/10356/138629 |
| work_keys_str_mv | AT lowtammychienyu influenceofthermalsinteringprotocolonmaterialspropertiesoftungstencarbidealloywc17cocomponentsbybinderjetprinting |