Pressureless sintering of ZrC with variable stoichiometry
Abstract This paper presents the experiments on the synthesis of zirconium carbide (ZrC) using carbothermal reduction of zirconia (ZrO2). The ratio of ZrO2:C is used to adapt ZrC x O y with x < 1 or ZrC + C. The modification of ZrC x O y and the total carbon amount allows the use of pressureless...
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| Format: | Article |
| Language: | English |
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Tsinghua University Press
2017-06-01
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| Series: | Journal of Advanced Ceramics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/s40145-017-0229-1 |
| _version_ | 1797715700475756544 |
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| author | Katrin Schönfeld Hans-Peter Martin Alexander Michaelis |
| author_facet | Katrin Schönfeld Hans-Peter Martin Alexander Michaelis |
| author_sort | Katrin Schönfeld |
| collection | DOAJ |
| description | Abstract This paper presents the experiments on the synthesis of zirconium carbide (ZrC) using carbothermal reduction of zirconia (ZrO2). The ratio of ZrO2:C is used to adapt ZrC x O y with x < 1 or ZrC + C. The modification of ZrC x O y and the total carbon amount allows the use of pressureless sintering method in combination with sintering temperatures ≤ 2000 °C. Fully densified ZrC products are obtained. The relevant details of ZrC formation are investigated by X-ray diffraction (XRD). The sintered products are characterized by XRD, field emission scanning electron microscopy (FESEM), as well as mechanical and electrical methods. XRD and FESEM investigations show that ZrC x O y is formed during the manufacturing process. The grain size and additional zirconia or carbon are related to the ZrO2:C ratio of the starting powder mixture. Bending strength up to 300 MPa, Young’s modulus up to 400 GPa, fracture toughness up to 4.1 MPa·m1/2, and electrical resistance at room temperature around 10−4 Ω·cm are reached by the pressureless sintered ZrC. |
| first_indexed | 2024-03-12T08:10:34Z |
| format | Article |
| id | doaj.art-349452805c564627a7b563ccea03d61d |
| institution | Directory Open Access Journal |
| issn | 2226-4108 2227-8508 |
| language | English |
| last_indexed | 2024-03-12T08:10:34Z |
| publishDate | 2017-06-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Journal of Advanced Ceramics |
| spelling | doaj.art-349452805c564627a7b563ccea03d61d2023-09-02T19:09:31ZengTsinghua University PressJournal of Advanced Ceramics2226-41082227-85082017-06-016216517510.1007/s40145-017-0229-1Pressureless sintering of ZrC with variable stoichiometryKatrin Schönfeld0Hans-Peter Martin1Alexander Michaelis2Fraunhofer Institute for Ceramic Technologies and Systems IKTSFraunhofer Institute for Ceramic Technologies and Systems IKTSFraunhofer Institute for Ceramic Technologies and Systems IKTSAbstract This paper presents the experiments on the synthesis of zirconium carbide (ZrC) using carbothermal reduction of zirconia (ZrO2). The ratio of ZrO2:C is used to adapt ZrC x O y with x < 1 or ZrC + C. The modification of ZrC x O y and the total carbon amount allows the use of pressureless sintering method in combination with sintering temperatures ≤ 2000 °C. Fully densified ZrC products are obtained. The relevant details of ZrC formation are investigated by X-ray diffraction (XRD). The sintered products are characterized by XRD, field emission scanning electron microscopy (FESEM), as well as mechanical and electrical methods. XRD and FESEM investigations show that ZrC x O y is formed during the manufacturing process. The grain size and additional zirconia or carbon are related to the ZrO2:C ratio of the starting powder mixture. Bending strength up to 300 MPa, Young’s modulus up to 400 GPa, fracture toughness up to 4.1 MPa·m1/2, and electrical resistance at room temperature around 10−4 Ω·cm are reached by the pressureless sintered ZrC.http://link.springer.com/article/10.1007/s40145-017-0229-1zirconium carbide (ZrC)carbothermal reductionsinteringmechanical propertieselectrical properties |
| spellingShingle | Katrin Schönfeld Hans-Peter Martin Alexander Michaelis Pressureless sintering of ZrC with variable stoichiometry Journal of Advanced Ceramics zirconium carbide (ZrC) carbothermal reduction sintering mechanical properties electrical properties |
| title | Pressureless sintering of ZrC with variable stoichiometry |
| title_full | Pressureless sintering of ZrC with variable stoichiometry |
| title_fullStr | Pressureless sintering of ZrC with variable stoichiometry |
| title_full_unstemmed | Pressureless sintering of ZrC with variable stoichiometry |
| title_short | Pressureless sintering of ZrC with variable stoichiometry |
| title_sort | pressureless sintering of zrc with variable stoichiometry |
| topic | zirconium carbide (ZrC) carbothermal reduction sintering mechanical properties electrical properties |
| url | http://link.springer.com/article/10.1007/s40145-017-0229-1 |
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