Journal of Inorganic Materials, Volume. 37, Issue 12, 1295(2022)
Enhanced Flexural Strength and Thermal Shock Resistance of Alumina Ceramics by Mullite/Alumina Pre-stressed Coating
Figures & Tables(12)
. Phase analyses of mullite-alumina coating materials fabricated with different mass fractions of quartz
. Flexural strength at room temperature of pre-stressed Al2O3 fabricated with different mass fractions of quartz
. Flexural strength of C15-A pre-stressed ceramics tested at different high temperatures
. Fracture section SEM images of pre-stressed alumina ((a) C10-A, (b) C25-A, (c) C15-A), (d) EDS analysis of C15-A
. Theoretical relationship between residual compressive stress and substrate-to-coating thickness ratio in different pre- stressed aluminas
. Residual flexural strength of C15-A pre-stressed alumina after thermal shock at different temperatures
. Cross section SEM images of ceramic after thermal shock at 320 ℃
Table 1. Calculation of residual stresses of coatings and substrates in pre-stressed Al2O3 fabricated with different mass fractions of quartz
View tableView in ArticleTable 1. Calculation of residual stresses of coatings and substrates in pre-stressed Al2O3 fabricated with different mass fractions of quartz
Sample Ec/GPa Es/GPa αc/(×10-6, K-1) αs/(×10-6, K-1) hc/μm hs/μm ΔT σc/MPa σs/MPa C5-A 91.36 380.11 6.69 7.58 50 1450 1000 ℃ -119.66 4.80 C10-A 80.18 380.11 6.06 7.58 50 1450 1000 ℃ -151.94 6.09 C15-A 73.33 380.11 5.33 7.58 50 1450 1000 ℃ -181.86 7.29 C20-A 67.71 380.11 5.04 7.58 50 1450 1000 ℃ -189.74 7.60 C25-A 62.14 380.11 4.72 7.58 50 1450 1000 ℃ -196.17 7.86 C30-A 58.31 380.11 4.41 7.58 50 1450 1000 ℃ -197.69 7.91
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Hongjian HAO, Haiyan LI, Detian WAN, Yiwang BAO, Yueming LI. Enhanced Flexural Strength and Thermal Shock Resistance of Alumina Ceramics by Mullite/Alumina Pre-stressed Coating[J]. Journal of Inorganic Materials, 2022, 37(12): 1295
Paper Information
Category: EDITORIAL
Received: Apr. 22, 2022
Accepted: --
Published Online: Jan. 12, 2023
The Author Email: HAO Hongjian (haohongjian1996@qq.com)
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