Effects of Residual Stresses on Strength and Crack Resistance in ZrO2 Ceramics with Alumina Coating

Haiyan LI; Hongjian HAO; Yuan TIAN; Changan WANG; Yiwang BAO; Detian WAN

doi:10.15541/jim20210412

Journals >Journal of Inorganic Materials >Volume 37 >Issue 4 >Page 467 > Article

Journal of Inorganic Materials
Vol. 37, Issue 4, 467 (2022)

Effects of Residual Stresses on Strength and Crack Resistance in ZrO₂ Ceramics with Alumina Coating

Haiyan LI^1,2, Hongjian HAO^1,2, Yuan TIAN^1,2, Changan WANG³..., Yiwang BAO^1,2,* and Detian WAN^1,2,*|Show fewer author(s)

Author Affiliations

¹1. China Building Material Test & Certification Group Co., Ltd, Beijing 100024, China

²2. State Key Laboratory of Green Building Materials, China Building Materials Academy, Beijing 100024, China

³3. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

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DOI: 10.15541/jim20210412 Cite this Article

Haiyan LI, Hongjian HAO, Yuan TIAN, Changan WANG, Yiwang BAO, Detian WAN. Effects of Residual Stresses on Strength and Crack Resistance in ZrO₂ Ceramics with Alumina Coating [J]. Journal of Inorganic Materials, 2022, 37(4): 467 Copy Citation Text

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(a) Schematic diagram of the ACZS pre-stressed ceramics; (b) SEM image of interface between ZrO2 substrate and Al2O3 coating

1. (a) Schematic diagram of the A_CZ_S pre-stressed ceramics; (b) SEM image of interface between ZrO₂ substrate and Al₂O₃ coating

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(a) Typical Vickers indentation of ZrO2 ceramics; (b) Optical photograph of the indentation morphology for ZrO2 ceramics without residual stress

2. (a) Typical Vickers indentation of ZrO₂ ceramics; (b) Optical photograph of the indentation morphology for ZrO₂ ceramics without residual stress

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3. Optical photographs of the indentation morphologies for A_CZ_S pre-stressed ceramics with different ratios of the cross-sectional areas, showing the effects of the compressive stresses in the coating and tensile stresses in the substrate

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4. Stress state and Vickers indentation of A_CZ_S pre-stressed ceramics h_s and h_c: the thicknesses of substrate and coating

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5. Calculated residual stress in the Al₂O₃coating and ZrO₂ substrate of A_CZ_S pre-stressed ceramics, as the function of the ratio of cross-sectional area of ZrO₂substrate to Al₂O₃coating

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$SEM images of the fracture surfaces for monolithic ZrO2 ceramics (a, b) and ZrO2 substrate of ACZS pre-stressed ceramics (c, d) fabricated by the hot-pressing sintering method$

6. SEM images of the fracture surfaces for monolithic ZrO₂ ceramics (a, b) and ZrO₂ substrate of A_CZ_Spre-stressed ceramics (c, d) fabricated by the hot-pressing sintering method

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7. Residual strength of A_CZ_S pre-stressed ceramics and ZrO₂ ceramics, after quenching at different thermal shock temperatures

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		Elasticity modulus, E/GPa	p/N	a/μm	c/μm	H_V/GPa	K_I,_IFR/(MPa·m^1/2)
ZrO₂	ZrO₂	220	19.62	26.80	35.20	12.66	9.10
A_CZ_S with 40 μm coating	Al₂O₃-40	350	4.91	11.25	47.50	17.98	1.52
A_CZ_S with 40 μm coating	ZrO₂-40	220	19.62	26.16	36.88	13.28	8.33
A_CZ_S with 30 μm coating	Al₂O₃-30	350	4.91	11.09	44.38	18.49	1.67
A_CZ_S with 30 μm coating	ZrO₂-30	220	19.62	26.08	36.05	13.37	8.59
A_CZ_S with 20 μm coating	Al₂O₃-20	350	4.91	10.94	25.00	19.02	3.89
A_CZ_S with 20 μm coating	ZrO₂-20	220	19.62	26.01	35.87	13.44	8.64