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Effects of Re addition on phase stability and mechanical properties of hexagonal OsB2
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| Zeitschriftentitel: | Journal of the American Ceramic Society |
|---|---|
| Personen und Körperschaften: | , , , , , , |
| In: | Journal of the American Ceramic Society, 101, 2018, 1, S. 151-158 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Wiley
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| Schlagwörter: |
| author_facet |
Long, Ying Zou, Canhui Zheng, Xin Lin, Hua‐Tay Zhang, Fenglin Wang, Chengyong An, Linan Long, Ying Zou, Canhui Zheng, Xin Lin, Hua‐Tay Zhang, Fenglin Wang, Chengyong An, Linan |
|---|---|
| author |
Long, Ying Zou, Canhui Zheng, Xin Lin, Hua‐Tay Zhang, Fenglin Wang, Chengyong An, Linan |
| spellingShingle |
Long, Ying Zou, Canhui Zheng, Xin Lin, Hua‐Tay Zhang, Fenglin Wang, Chengyong An, Linan Journal of the American Ceramic Society Effects of Re addition on phase stability and mechanical properties of hexagonal OsB2 Materials Chemistry Ceramics and Composites |
| author_sort |
long, ying |
| spelling |
Long, Ying Zou, Canhui Zheng, Xin Lin, Hua‐Tay Zhang, Fenglin Wang, Chengyong An, Linan 0002-7820 1551-2916 Wiley Materials Chemistry Ceramics and Composites http://dx.doi.org/10.1111/jace.15219 <jats:title>Abstract</jats:title><jats:p>ReB<jats:sub>2</jats:sub>‐type hexagonal Osmium diboride (OsB<jats:sub>2</jats:sub>) has been predicted to exhibit higher hardness than its orthorhombic phase, but hexagonal‐orthorhombic phase transformation occurs at temperature higher than 600°C, resulting in the decrease in its hardness. Therefore, ReB<jats:sub>2</jats:sub>‐type hexagonal OsB<jats:sub>2</jats:sub> samples with Re addition were produced by a combination of mechanochemical method and pressureless sintering technique, and the effects of Rhenium (Re) addition on phase composition, thermal stability and mechanical properties of OsB<jats:sub>2</jats:sub> were investigated in this study. X‐ray diffraction (XRD) analysis of the as‐synthesized powders by high‐energy ball milling indicates the formation of hexagonal Os<jats:sub>1‐x</jats:sub>Re<jats:sub>x</jats:sub>B<jats:sub>2</jats:sub> solid solution with Re concentration of 5 and 10 at.% without forming a second phase. After being sintered at 1700°C, part of the hexagonal phase in OsB<jats:sub>2</jats:sub> transformed to orthorhombic structure, while Os<jats:sub>0.95</jats:sub>Re<jats:sub>0.05</jats:sub>B<jats:sub>2</jats:sub> and Os<jats:sub>0.9</jats:sub>Re<jats:sub>0.1</jats:sub>B<jats:sub>2</jats:sub> maintained their hexagonal structure. This suggests that the thermal stability of the hexagonal OsB<jats:sub>2</jats:sub> was significantly improved with the addition of Re. Scanning electron microscopy (<jats:styled-content style="fixed-case">SEM</jats:styled-content>) photographs show that all of the as‐sintered samples exhibit a homogeneous microstructure with some pores and cracks formed throughout the samples with the relative density >90%. The measurements of micro‐hardness, nano‐hardness, and Young's modulus of the OsB<jats:sub>2</jats:sub> increased with Re addition, and these properties of the sample with 5 at.% addition of Re is higher than that with 10 at.% Re.</jats:p> Effects of Re addition on phase stability and mechanical properties of hexagonal OsB<sub>2</sub> Journal of the American Ceramic Society |
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| title |
Effects of Re addition on phase stability and mechanical properties of hexagonal OsB2 |
| title_unstemmed |
Effects of Re addition on phase stability and mechanical properties of hexagonal OsB2 |
| title_full |
Effects of Re addition on phase stability and mechanical properties of hexagonal OsB2 |
| title_fullStr |
Effects of Re addition on phase stability and mechanical properties of hexagonal OsB2 |
| title_full_unstemmed |
Effects of Re addition on phase stability and mechanical properties of hexagonal OsB2 |
| title_short |
Effects of Re addition on phase stability and mechanical properties of hexagonal OsB2 |
| title_sort |
effects of re addition on phase stability and mechanical properties of hexagonal osb<sub>2</sub> |
| topic |
Materials Chemistry Ceramics and Composites |
| url |
http://dx.doi.org/10.1111/jace.15219 |
| publishDate |
2018 |
| physical |
151-158 |
| description |
<jats:title>Abstract</jats:title><jats:p>ReB<jats:sub>2</jats:sub>‐type hexagonal Osmium diboride (OsB<jats:sub>2</jats:sub>) has been predicted to exhibit higher hardness than its orthorhombic phase, but hexagonal‐orthorhombic phase transformation occurs at temperature higher than 600°C, resulting in the decrease in its hardness. Therefore, ReB<jats:sub>2</jats:sub>‐type hexagonal OsB<jats:sub>2</jats:sub> samples with Re addition were produced by a combination of mechanochemical method and pressureless sintering technique, and the effects of Rhenium (Re) addition on phase composition, thermal stability and mechanical properties of OsB<jats:sub>2</jats:sub> were investigated in this study. X‐ray diffraction (XRD) analysis of the as‐synthesized powders by high‐energy ball milling indicates the formation of hexagonal Os<jats:sub>1‐x</jats:sub>Re<jats:sub>x</jats:sub>B<jats:sub>2</jats:sub> solid solution with Re concentration of 5 and 10 at.% without forming a second phase. After being sintered at 1700°C, part of the hexagonal phase in OsB<jats:sub>2</jats:sub> transformed to orthorhombic structure, while Os<jats:sub>0.95</jats:sub>Re<jats:sub>0.05</jats:sub>B<jats:sub>2</jats:sub> and Os<jats:sub>0.9</jats:sub>Re<jats:sub>0.1</jats:sub>B<jats:sub>2</jats:sub> maintained their hexagonal structure. This suggests that the thermal stability of the hexagonal OsB<jats:sub>2</jats:sub> was significantly improved with the addition of Re. Scanning electron microscopy (<jats:styled-content style="fixed-case">SEM</jats:styled-content>) photographs show that all of the as‐sintered samples exhibit a homogeneous microstructure with some pores and cracks formed throughout the samples with the relative density >90%. The measurements of micro‐hardness, nano‐hardness, and Young's modulus of the OsB<jats:sub>2</jats:sub> increased with Re addition, and these properties of the sample with 5 at.% addition of Re is higher than that with 10 at.% Re.</jats:p> |
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| author | Long, Ying, Zou, Canhui, Zheng, Xin, Lin, Hua‐Tay, Zhang, Fenglin, Wang, Chengyong, An, Linan |
| author_facet | Long, Ying, Zou, Canhui, Zheng, Xin, Lin, Hua‐Tay, Zhang, Fenglin, Wang, Chengyong, An, Linan, Long, Ying, Zou, Canhui, Zheng, Xin, Lin, Hua‐Tay, Zhang, Fenglin, Wang, Chengyong, An, Linan |
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| description | <jats:title>Abstract</jats:title><jats:p>ReB<jats:sub>2</jats:sub>‐type hexagonal Osmium diboride (OsB<jats:sub>2</jats:sub>) has been predicted to exhibit higher hardness than its orthorhombic phase, but hexagonal‐orthorhombic phase transformation occurs at temperature higher than 600°C, resulting in the decrease in its hardness. Therefore, ReB<jats:sub>2</jats:sub>‐type hexagonal OsB<jats:sub>2</jats:sub> samples with Re addition were produced by a combination of mechanochemical method and pressureless sintering technique, and the effects of Rhenium (Re) addition on phase composition, thermal stability and mechanical properties of OsB<jats:sub>2</jats:sub> were investigated in this study. X‐ray diffraction (XRD) analysis of the as‐synthesized powders by high‐energy ball milling indicates the formation of hexagonal Os<jats:sub>1‐x</jats:sub>Re<jats:sub>x</jats:sub>B<jats:sub>2</jats:sub> solid solution with Re concentration of 5 and 10 at.% without forming a second phase. After being sintered at 1700°C, part of the hexagonal phase in OsB<jats:sub>2</jats:sub> transformed to orthorhombic structure, while Os<jats:sub>0.95</jats:sub>Re<jats:sub>0.05</jats:sub>B<jats:sub>2</jats:sub> and Os<jats:sub>0.9</jats:sub>Re<jats:sub>0.1</jats:sub>B<jats:sub>2</jats:sub> maintained their hexagonal structure. This suggests that the thermal stability of the hexagonal OsB<jats:sub>2</jats:sub> was significantly improved with the addition of Re. Scanning electron microscopy (<jats:styled-content style="fixed-case">SEM</jats:styled-content>) photographs show that all of the as‐sintered samples exhibit a homogeneous microstructure with some pores and cracks formed throughout the samples with the relative density >90%. The measurements of micro‐hardness, nano‐hardness, and Young's modulus of the OsB<jats:sub>2</jats:sub> increased with Re addition, and these properties of the sample with 5 at.% addition of Re is higher than that with 10 at.% Re.</jats:p> |
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| spelling | Long, Ying Zou, Canhui Zheng, Xin Lin, Hua‐Tay Zhang, Fenglin Wang, Chengyong An, Linan 0002-7820 1551-2916 Wiley Materials Chemistry Ceramics and Composites http://dx.doi.org/10.1111/jace.15219 <jats:title>Abstract</jats:title><jats:p>ReB<jats:sub>2</jats:sub>‐type hexagonal Osmium diboride (OsB<jats:sub>2</jats:sub>) has been predicted to exhibit higher hardness than its orthorhombic phase, but hexagonal‐orthorhombic phase transformation occurs at temperature higher than 600°C, resulting in the decrease in its hardness. Therefore, ReB<jats:sub>2</jats:sub>‐type hexagonal OsB<jats:sub>2</jats:sub> samples with Re addition were produced by a combination of mechanochemical method and pressureless sintering technique, and the effects of Rhenium (Re) addition on phase composition, thermal stability and mechanical properties of OsB<jats:sub>2</jats:sub> were investigated in this study. X‐ray diffraction (XRD) analysis of the as‐synthesized powders by high‐energy ball milling indicates the formation of hexagonal Os<jats:sub>1‐x</jats:sub>Re<jats:sub>x</jats:sub>B<jats:sub>2</jats:sub> solid solution with Re concentration of 5 and 10 at.% without forming a second phase. After being sintered at 1700°C, part of the hexagonal phase in OsB<jats:sub>2</jats:sub> transformed to orthorhombic structure, while Os<jats:sub>0.95</jats:sub>Re<jats:sub>0.05</jats:sub>B<jats:sub>2</jats:sub> and Os<jats:sub>0.9</jats:sub>Re<jats:sub>0.1</jats:sub>B<jats:sub>2</jats:sub> maintained their hexagonal structure. This suggests that the thermal stability of the hexagonal OsB<jats:sub>2</jats:sub> was significantly improved with the addition of Re. Scanning electron microscopy (<jats:styled-content style="fixed-case">SEM</jats:styled-content>) photographs show that all of the as‐sintered samples exhibit a homogeneous microstructure with some pores and cracks formed throughout the samples with the relative density >90%. The measurements of micro‐hardness, nano‐hardness, and Young's modulus of the OsB<jats:sub>2</jats:sub> increased with Re addition, and these properties of the sample with 5 at.% addition of Re is higher than that with 10 at.% Re.</jats:p> Effects of Re addition on phase stability and mechanical properties of hexagonal OsB<sub>2</sub> Journal of the American Ceramic Society |
| spellingShingle | Long, Ying, Zou, Canhui, Zheng, Xin, Lin, Hua‐Tay, Zhang, Fenglin, Wang, Chengyong, An, Linan, Journal of the American Ceramic Society, Effects of Re addition on phase stability and mechanical properties of hexagonal OsB2, Materials Chemistry, Ceramics and Composites |
| title | Effects of Re addition on phase stability and mechanical properties of hexagonal OsB2 |
| title_full | Effects of Re addition on phase stability and mechanical properties of hexagonal OsB2 |
| title_fullStr | Effects of Re addition on phase stability and mechanical properties of hexagonal OsB2 |
| title_full_unstemmed | Effects of Re addition on phase stability and mechanical properties of hexagonal OsB2 |
| title_short | Effects of Re addition on phase stability and mechanical properties of hexagonal OsB2 |
| title_sort | effects of re addition on phase stability and mechanical properties of hexagonal osb<sub>2</sub> |
| title_unstemmed | Effects of Re addition on phase stability and mechanical properties of hexagonal OsB2 |
| topic | Materials Chemistry, Ceramics and Composites |
| url | http://dx.doi.org/10.1111/jace.15219 |