Journal of Inorganic Materials, Volume. 39, Issue 7, 793(2024)
Influence of RE-Si-Al-O Glass Phase on Microstructure and CMAS Corrosion Resistance of High Entropy Rare Earth Disilicates
Figures & Tables(13)
. XRD patterns of (4RE0.25)2Si2O7 ceramics and (4RE0.25)2Si2O7/RE-Si-Al-O multiphase ceramics
. SEM images and EDS mappings of (4RE0.25)2Si2O7 ceramics and (4RE0.25)2Si2O7/RE-Si-Al-O multiphase ceramics
. EDS patterns of glass phases in (4RE0.25)2Si2O7/RE-Si-Al-O multiphase ceramics
. Cross-sectional SEM images of (4RE0.25)2Si2O7 ceramics and (4RE0.25)2Si2O7/RE-Si-Al-O multiphase ceramics after corrosion at 1300 ℃ for 48 h
. XRD patterns of (4RE0.25)2Si2O7 and RE-Si-Al-O mixed with CMAS after calcination at 1300 ℃ for 48 h
. XRD patterns of (4RE0.25)2Si2O7 ceramics and (4RE0.25)2Si2O7/RE-Si-Al-O multiphase ceramics after corrosion at 1500 ℃ for (a) 24 and (b) 48 h
. Cross-sectional SEM images of (4RE0.25)2Si2O7 ceramics after corrosion at 1500 ℃ for (a) 24 and (b) 48 h (c) Partial enlargement of area in (b)
. Cross-sectional SEM images of (4RE0.25)2Si2O7/RE-Si-Al-O multiphase ceramics after corrosion at 1500 ℃ for 24 and 48 h
. Local enlarged SEM images of (4RE0.25)2Si2O7/RE-Si-Al-O multiphase ceramics after corrosion at 1500 ℃ for 48 h
Table 1. Elemental composition of each point in
Fig. 2 (%, in atom)View tableView in ArticleTable 1. Elemental composition of each point in
Fig. 2 (%, in atom)Spot Y Yb Er Tm Si O Matter 1 4.54 3.55 3.49 3.40 19.29 65.73 (4RE0.25)2Si2O7 2 4.42 4.31 5.48 4.09 18.99 62.71 (4RE0.25)2Si2O7 3 4.49 4.19 4.23 4.06 19.27 63.76 (4RE0.25)2Si2O7 4 5.18 5.69 5.48 5.30 21.41 56.94 (4RE0.25)2Si2O7 5 4.26 1.84 2.13 2.11 17.51 72.15 (4RE0.25)2Si2O7
Table 2. Elemental composition of each point in
Fig. 4 (%, in atom)View tableView in ArticleTable 2. Elemental composition of each point in
Fig. 4 (%, in atom)Spot Yb Tm Er Y Si O Ca Mg Al Sm La Matter 1 0.76 0.69 0.71 0.69 22.15 57.64 9.43 0.99 6.94 CMAS 2 2.85 2.78 2.67 2.19 21.16 52.94 13.05 2.36 Ca2RE8(SiO4)6O2 3 6.06 5.55 5.23 3.81 21.75 57.60 (4RE0.25)2Si2O7 4 1.91 1.89 2.02 1.24 23.55 58.21 11.18 CMAS 5 0.61 0.54 0.54 0.46 23.43 58.28 8.82 0.90 6.42 CMAS 6 2.02 1.82 1.84 0.82 24.39 57.84 11.27 Ca2RE8(SiO4)6O2 7 5.54 5.11 5.36 3.77 22.74 57.48 (4RE0.25)2Si2O7 8 0.53 0.61 0.69 0.53 23.82 58.48 9.71 5.63 Yb-Si-Al-O-Ca 9 0.51 0.40 0.52 0.43 22.40 59.87 8.46 0.75 6.66 CMAS 10 1.79 1.90 1.98 0.95 23.72 58.85 10.81 Ca2RE8(SiO4)6O2 11 5.98 4.92 4.89 3.56 21.68 58.97 (4RE0.25)2Si2O7 12 0.37 0.34 0.37 0.23 23.14 59.04 8.50 0.27 7.74 Y-Si-Al-O-Ca 13 0.76 0.71 0.68 0.69 24.75 55.79 9.23 1.01 6.22 0.16 CMAS 14 1.87 1.99 2.07 0.80 26.09 54.97 12.02 0.19 Ca2RE8(SiO4)6O2 15 5.98 5.96 5.54 3.02 23.81 55.69 (4RE0.25)2Si2O7 16 0.22 0.35 0.45 0.21 26.26 57.49 7.13 0.28 6.32 1.29 La-Si-Al-O-Ca
Table 3. Elemental composition of each point in
Fig. 7 (%, in atom)View tableView in ArticleTable 3. Elemental composition of each point in
Fig. 7 (%, in atom)Spot Yb Tm Er Y Si O Ca Mg Al La Matter 1 1.39 1.12 1.03 0.84 22.26 54.21 14.35 0.39 4.41 CMAS 2 7.80 8.12 8.21 8.46 14.57 45.43 7.41 Ca2RE8(SiO4)6O2 3 8.10 8.39 8.13 4.03 28.68 42.67 (4RE0.25)2Si2O7
Table 4. Elemental composition of each point in
Fig. 9 (%, in atom)View tableView in ArticleTable 4. Elemental composition of each point in
Fig. 9 (%, in atom)Spot Yb Tm Er Y Si O Ca Mg Al La Matter 1 1.23 0.90 0.84 0.72 23.01 55.92 10.20 0.38 6.80 CMAS 2 6.17 7.43 7.75 8.02 16.47 47.83 6.33 Ca2RE8(SiO4)6O2 3 6.92 6.61 6.34 3.64 24.73 51.76 (4RE0.25)2Si2O7 4 0.34 0.44 0.48 0.21 25.89 54.59 10.73 0.34 6.98 Yb-Si-Al-O-Ca 5 1.01 0.92 0.81 0.74 24.10 55.69 9.65 0.22 6.86 CMAS 6 5.92 6.23 6.52 6.94 16.85 52.31 5.23 Ca2RE8(SiO4)6O2 7 5.27 5.35 5.64 3.77 23.11 56.86 (4RE0.25)2Si2O7 8 0.64 0.69 0.76 0.41 24.03 56.45 9.70 0.43 6.89 Y-Si-Al-O-Ca 9 5.61 5.82 6.15 6.43 15.97 53.99 5.02 1.01 Ca2RE8(SiO4)6O2 10 5.81 5.34 5.62 3.50 23.47 56.26 (4RE0.25)2Si2O7 11 0.39 0.47 0.53 0.23 25.11 56.14 9.01 0.27 7.18 0.67 La-Si-Al-O-Ca 12 1.73 1.82 1.89 1.57 28.54 54.01 0.36 8.17 1.91 La-Si-Al-O
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Liuyuan LI, Kaiming HUANG, Xiuyi ZHAO, Huichao LIU, Chao WANG. Influence of RE-Si-Al-O Glass Phase on Microstructure and CMAS Corrosion Resistance of High Entropy Rare Earth Disilicates[J]. Journal of Inorganic Materials, 2024, 39(7): 793
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Received: Jan. 30, 2024
Accepted: --
Published Online: Aug. 30, 2024
The Author Email: LI Liuyuan (liuyuanwuming@163.com)
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