Journal of Inorganic Materials, Volume. 38, Issue 8, 885(2023)
Figures & Tables(13)
2. XRD patterns (a) and Raman spectra (b) of the products obtained at different heating rates
3. Optical and SEM images of the products obtained at different heating rates
4. XRD patterns (a) and Raman spectra (b) of the products obtained at different synthesis temperatures
5. Optical and SEM images of the products obtained at different synthesis temperatures
7. SEM image and EDS mappings of SrTa(O,N)3 powder prepared under optimized conditions
9. SEM and optical images of SrTa(O,N)3 bulk obtained by SPS process
10. Dielectric performance curves of SrTa(O,N)3 ceramic bulk (300 Hz-1 MHz)
Table 1. Synthesis conditions (heating strategy) and element content
View tableView in ArticleTable 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
Table 2. Density and porosity of oxynitride ceramics prepared by different SPS processes (100 MPa)
View tableView in ArticleTable 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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Junsheng LI, Liang ZENG, Rongjun LIU, Yanfei WANG, Fan WAN, Duan LI.
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Received: Jan. 16, 2023
Accepted: --
Published Online: Dec. 28, 2023
The Author Email: LI Duan (duan_li_2016@163.com)
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