Effect of Fabrication Method of Fe-TiB2 Nanocomposite Powders on Spark-Plasma Sintering Behavior
In this study, Fe-40wt% TiB2 nanocomposite powders were fabricated by two different methods: (1) conventional powder metallurgical process by simple high-energy ball-milling of Fe and TiB2 elemental powders (ex-situ method) and (2) high-energy ball-milling of the powder mixture of (FeB+TiH2) followe...
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2020-07-01
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| Series: | Archives of Metallurgy and Materials |
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| Online Access: | https://journals.pan.pl/Content/116376/PDF/AMM-2020-3-09-Ji-Soon%20Kim.pdf |
| _version_ | 1818490409534357504 |
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| author | Sun-Woo Bae Xuan-Khoa Huynh Ji-Soon Kim |
| author_facet | Sun-Woo Bae Xuan-Khoa Huynh Ji-Soon Kim |
| author_sort | Sun-Woo Bae |
| collection | DOAJ |
| description | In this study, Fe-40wt% TiB2 nanocomposite powders were fabricated by two different methods: (1) conventional powder metallurgical process by simple high-energy ball-milling of Fe and TiB2 elemental powders (ex-situ method) and (2) high-energy ball-milling of the powder mixture of (FeB+TiH2) followed by reaction synthesis at high temperature (in-situ method). The ex-situ powder was prepared by planetary ball-milling at 700 rpm for 2 h under an Ar-gas atmosphere. The in-situ powder was prepared under the same milling condition and heat-treated at 900oC for 2 h under flowing argon gas in a tube furnace to form TiB2 particulates through a reaction between FeB and Ti. Both Fe-TiB2 composite powder compacts were sintered by a spark-plasma sintering (SPS) process. Sintering was performed at 1150℃ for the ex-situ powder compact and at 1080℃ for the in-situ powder for 10 minutes under 50 MPa of sintering pressure and 0.1 Pa vacuum for both processes. The heating rate was 50o/min to reach the sintering temperature. Results from analysis of shrinkage and microstructural observation showed that the in-situ composite powder compacts had a homogeneous and fine microstructure compared to the ex-situ preparation, even though the sintered densities were almost the same (99.6 and 99.8% relative density, respectively). |
| first_indexed | 2024-12-10T17:16:40Z |
| format | Article |
| id | doaj.art-2b477cd48ca04f5eaacbc7343a1533f3 |
| institution | Directory Open Access Journal |
| issn | 2300-1909 |
| language | English |
| last_indexed | 2024-12-10T17:16:40Z |
| publishDate | 2020-07-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Metallurgy and Materials |
| spelling | doaj.art-2b477cd48ca04f5eaacbc7343a1533f32022-12-22T01:40:07ZengPolish Academy of SciencesArchives of Metallurgy and Materials2300-19092020-07-01vol. 65No 310231028https://doi.org/10.24425/amm.2020.133211Effect of Fabrication Method of Fe-TiB2 Nanocomposite Powders on Spark-Plasma Sintering BehaviorSun-Woo BaeXuan-Khoa HuynhJi-Soon KimIn this study, Fe-40wt% TiB2 nanocomposite powders were fabricated by two different methods: (1) conventional powder metallurgical process by simple high-energy ball-milling of Fe and TiB2 elemental powders (ex-situ method) and (2) high-energy ball-milling of the powder mixture of (FeB+TiH2) followed by reaction synthesis at high temperature (in-situ method). The ex-situ powder was prepared by planetary ball-milling at 700 rpm for 2 h under an Ar-gas atmosphere. The in-situ powder was prepared under the same milling condition and heat-treated at 900oC for 2 h under flowing argon gas in a tube furnace to form TiB2 particulates through a reaction between FeB and Ti. Both Fe-TiB2 composite powder compacts were sintered by a spark-plasma sintering (SPS) process. Sintering was performed at 1150℃ for the ex-situ powder compact and at 1080℃ for the in-situ powder for 10 minutes under 50 MPa of sintering pressure and 0.1 Pa vacuum for both processes. The heating rate was 50o/min to reach the sintering temperature. Results from analysis of shrinkage and microstructural observation showed that the in-situ composite powder compacts had a homogeneous and fine microstructure compared to the ex-situ preparation, even though the sintered densities were almost the same (99.6 and 99.8% relative density, respectively).https://journals.pan.pl/Content/116376/PDF/AMM-2020-3-09-Ji-Soon%20Kim.pdffe-tib2 compositeex-situin-situiron boridetitanium hydridehigh-energy ball-millingspark-plasma sinteringdensification behavior |
| spellingShingle | Sun-Woo Bae Xuan-Khoa Huynh Ji-Soon Kim Effect of Fabrication Method of Fe-TiB2 Nanocomposite Powders on Spark-Plasma Sintering Behavior Archives of Metallurgy and Materials fe-tib2 composite ex-situ in-situ iron boride titanium hydride high-energy ball-milling spark-plasma sintering densification behavior |
| title | Effect of Fabrication Method of Fe-TiB2 Nanocomposite Powders on Spark-Plasma Sintering Behavior |
| title_full | Effect of Fabrication Method of Fe-TiB2 Nanocomposite Powders on Spark-Plasma Sintering Behavior |
| title_fullStr | Effect of Fabrication Method of Fe-TiB2 Nanocomposite Powders on Spark-Plasma Sintering Behavior |
| title_full_unstemmed | Effect of Fabrication Method of Fe-TiB2 Nanocomposite Powders on Spark-Plasma Sintering Behavior |
| title_short | Effect of Fabrication Method of Fe-TiB2 Nanocomposite Powders on Spark-Plasma Sintering Behavior |
| title_sort | effect of fabrication method of fe tib2 nanocomposite powders on spark plasma sintering behavior |
| topic | fe-tib2 composite ex-situ in-situ iron boride titanium hydride high-energy ball-milling spark-plasma sintering densification behavior |
| url | https://journals.pan.pl/Content/116376/PDF/AMM-2020-3-09-Ji-Soon%20Kim.pdf |
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