残余应力对涂覆Al2O3涂层的ZrO2陶瓷的强度和裂纹扩展阻力的影响OA北大核心CSTPCD
Effects of Residual Stresses on Strength and Crack Resistance in ZrO2 Ceramics with Alumina Coating
本研究在ZrO2基体表面涂覆一薄层Al2O3涂层,利用基体与涂层之间热膨胀系数不匹配,在Al2O3-ZrO2预应力陶瓷(简称ACZS预应力陶瓷)表层引入压应力.采用维氏压痕法评价残余应力对ACZS预应力陶瓷的表层和基体中裂纹扩展阻力的影响.理论分析结合实验结果表明:表层的压应力使得ACZS预应力陶瓷的裂纹扩展阻力增大,最终导致强度和损伤容限提高;且ACZS预应力陶瓷表层的压应力和裂纹扩展阻力随着基体截面积与涂层截面积比值的增加而增大.当ZrO2基…查看全部>>
By covering a thin Al2O3 coating on ZrO2 substrate, compressive stress caused by the mismatch of thermal expansion coefficients between the coating and substrate was introduced in the surface layer of Al2O3-ZrO2 pre-stressed ceramics (marked as ACZS pre-stressed ceramics). Vickers indentation test was carried out to check the crack resistance in the surface layer and substrate influenced by the residual stresses. The enhancement of the crack resistance in su…查看全部>>
李海燕;郝鸿渐;田远;汪长安;包亦望;万德田
中国建材检验认证集团股份有限公司, 北京 100024中国建筑材料科学研究总院, 绿色建材国家重点实验室, 北京 100024中国建材检验认证集团股份有限公司, 北京 100024中国建筑材料科学研究总院, 绿色建材国家重点实验室, 北京 100024中国建材检验认证集团股份有限公司, 北京 100024中国建筑材料科学研究总院, 绿色建材国家重点实验室, 北京 100024
化学化工
Al2O3-ZrO2预应力陶瓷压应力弯曲强度损伤容限
Al2O3-ZrO2 pre-stressed ceramicscompressive stressflexural strengthdamage tolerance
《无机材料学报》 2022 (4)
467-472,6
National Natural Science Foundation of China(52032011)State Key Laboratory of New Ceramic and Fine Processing Tsinghua University(KF 202007)Youth Fund of China Building Materials Academy(ZD-16)
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