Journal of Inorganic Materials ›› 2023, Vol. 38 ›› Issue (8): 885-892.DOI: 10.15541/jim20230026
Special Issue: 【信息功能】电介质材料(202309)
• RESEARCH ARTICLE • Previous Articles Next Articles
LI Junsheng(), ZENG Liang, LIU Rongjun, WANG Yanfei, WAN Fan, LI Duan(
)
Received:
2023-01-16
Revised:
2023-02-09
Published:
2023-08-20
Online:
2023-03-17
Contact:
LI Duan, associate professor. E-mail: duan_li_2016@163.comAbout author:
LI Junsheng (1982-), male, associate professor. E-mail: charlesljs@163.com
Supported by:
CLC Number:
LI Junsheng, ZENG Liang, LIU Rongjun, WANG Yanfei, WAN Fan, LI Duan. Functional Strontium Tantalum Oxynitride Ceramics: Efficient Synthesis, Densification and Dielectric Performance[J]. Journal of Inorganic Materials, 2023, 38(8): 885-892.
Sample | Synthesis temperature /℃ | Heating rate /(℃·min-1) | Composition/% (in atomic) | O/N | |||
---|---|---|---|---|---|---|---|
Sr | Ta | O | N | ||||
STON-1000-10 | 1000 | 10 | 9.19 | 11.05 | 61.51 | 18.25 | 3.37 |
STON-800-100 | 800 | 100 | 14.59 | 7.74 | 57.10 | 20.57 | 2.78 |
STON-900-100 | 900 | 100 | 12.60 | 10.98 | 50.24 | 26.18 | 1.92 |
STON-1000-100 | 1000 | 100 | 11.74 | 11.92 | 47.83 | 28.51 | 1.68 |
STON-1100-100 | 1100 | 100 | 10.63 | 13.02 | 44.86 | 31.49 | 1.42 |
STON-1200-100 | 1200 | 100 | 10.11 | 13.50 | 44.17 | 32.22 | 1.37 |
Table 1 Synthesis conditions (heating strategy) and element content
Sample | Synthesis temperature /℃ | Heating rate /(℃·min-1) | Composition/% (in atomic) | O/N | |||
---|---|---|---|---|---|---|---|
Sr | Ta | O | N | ||||
STON-1000-10 | 1000 | 10 | 9.19 | 11.05 | 61.51 | 18.25 | 3.37 |
STON-800-100 | 800 | 100 | 14.59 | 7.74 | 57.10 | 20.57 | 2.78 |
STON-900-100 | 900 | 100 | 12.60 | 10.98 | 50.24 | 26.18 | 1.92 |
STON-1000-100 | 1000 | 100 | 11.74 | 11.92 | 47.83 | 28.51 | 1.68 |
STON-1100-100 | 1100 | 100 | 10.63 | 13.02 | 44.86 | 31.49 | 1.42 |
STON-1200-100 | 1200 | 100 | 10.11 | 13.50 | 44.17 | 32.22 | 1.37 |
Sample | Heating rate/ (℃·min-1) | Sintering temperature/℃ | Dwell time/min | Density/ (g·cm-3) | Relative density/% | Open porosity/% | (Open porosity/ Total porosity)/% |
---|---|---|---|---|---|---|---|
STON-SPS-1 | 300 | 1100 | 1 | 5.69 | 70.94 | 3.12 | 10.77 |
STON-SPS-2 | 300 | 1200 | 1 | 6.30 | 78.54 | 7.54 | 35.28 |
STON-SPS-3 | 300 | 1250 | 0 | 6.93 | 86.40 | 4.37 | 21.90 |
STON-SPS-4 | 300 | 1250 | 1 | 7.13 | 88.89 | 0.43 | 3.89 |
STON-SPS-5 | 300 | 1250 | 3 | 7.24 | 90.26 | 0.57 | 5.88 |
STON-SPS-6 | 200 | 1300 | 1 | 7.37 | 91.88 | 0.69 | 8.53 |
STON-SPS-7 | 300 | 1300 | 1 | 7.55 | 94.13 | 0.55 | 9.52 |
STON-SPS-8 | 300 | 1400 | 1 | 7.67 | 95.62 | 0.49 | 11.53 |
Table 2 Density and porosity of oxynitride ceramics prepared by different SPS processes (100 MPa)
Sample | Heating rate/ (℃·min-1) | Sintering temperature/℃ | Dwell time/min | Density/ (g·cm-3) | Relative density/% | Open porosity/% | (Open porosity/ Total porosity)/% |
---|---|---|---|---|---|---|---|
STON-SPS-1 | 300 | 1100 | 1 | 5.69 | 70.94 | 3.12 | 10.77 |
STON-SPS-2 | 300 | 1200 | 1 | 6.30 | 78.54 | 7.54 | 35.28 |
STON-SPS-3 | 300 | 1250 | 0 | 6.93 | 86.40 | 4.37 | 21.90 |
STON-SPS-4 | 300 | 1250 | 1 | 7.13 | 88.89 | 0.43 | 3.89 |
STON-SPS-5 | 300 | 1250 | 3 | 7.24 | 90.26 | 0.57 | 5.88 |
STON-SPS-6 | 200 | 1300 | 1 | 7.37 | 91.88 | 0.69 | 8.53 |
STON-SPS-7 | 300 | 1300 | 1 | 7.55 | 94.13 | 0.55 | 9.52 |
STON-SPS-8 | 300 | 1400 | 1 | 7.67 | 95.62 | 0.49 | 11.53 |
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