Improved fracture behavior and mechanical properties of alumina textured ceramics

Minmin Zhang; Yunfei Chang; Raul Bermejo; Guicheng Jiang; Yuan Sun; Jie Wu; Bin Yang; Wenwu Cao

doi:10.1016/j.matlet.2018.03.123

Improved fracture behavior and mechanical properties of alumina textured ceramics

Minmin Zhang, Yunfei Chang, Raul Bermejo, Guicheng Jiang, Yuan Sun, Jie Wu, Bin Yang, Wenwu Cao

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

[0 0 0 1]-oriented alumina ceramics with texture fractions (F₀₀₀₁) ranging from ∼9.6% to 93.6% were prepared by templated grain growth (TGG) of nanoscale matrix. Ceramic density directly controls F₀₀₀₁. Impingement of textured grains can be observed at F₀₀₀₁ ≥ 58.4%. When fracturing samples along [0 0 0 1], the interfaces between basal surfaces of the impinged textured grains provide a favorable path for crack deflection, and the deflection distance becomes longer with increasing F₀₀₀₁. As a result of both crack defection and high density, optimum fracture toughness ∼4.6 MPa.m^1/2 and flexural strength ∼589 MPa were achieved at F₀₀₀₁ = 93.6%, which are much higher than those obtained in the randomly oriented counterpart. This work can provide guidelines for the design and synthesis of novel structural ceramics with improved performance.

Original language	English (US)
Pages (from-to)	252-255
Number of pages	4
Journal	Materials Letters
Volume	221
DOIs	https://doi.org/10.1016/j.matlet.2018.03.123
State	Published - Jun 15 2018

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.matlet.2018.03.123

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title = "Improved fracture behavior and mechanical properties of alumina textured ceramics",

abstract = "[0 0 0 1]-oriented alumina ceramics with texture fractions (F0001) ranging from ∼9.6\% to 93.6\% were prepared by templated grain growth (TGG) of nanoscale matrix. Ceramic density directly controls F0001. Impingement of textured grains can be observed at F0001 ≥ 58.4\%. When fracturing samples along [0 0 0 1], the interfaces between basal surfaces of the impinged textured grains provide a favorable path for crack deflection, and the deflection distance becomes longer with increasing F0001. As a result of both crack defection and high density, optimum fracture toughness ∼4.6 MPa.m1/2 and flexural strength ∼589 MPa were achieved at F0001 = 93.6\%, which are much higher than those obtained in the randomly oriented counterpart. This work can provide guidelines for the design and synthesis of novel structural ceramics with improved performance.",

author = "Minmin Zhang and Yunfei Chang and Raul Bermejo and Guicheng Jiang and Yuan Sun and Jie Wu and Bin Yang and Wenwu Cao",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

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doi = "10.1016/j.matlet.2018.03.123",

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T1 - Improved fracture behavior and mechanical properties of alumina textured ceramics

AU - Zhang, Minmin

AU - Chang, Yunfei

AU - Bermejo, Raul

AU - Jiang, Guicheng

AU - Sun, Yuan

AU - Wu, Jie

AU - Yang, Bin

AU - Cao, Wenwu

PY - 2018/6/15

Y1 - 2018/6/15

N2 - [0 0 0 1]-oriented alumina ceramics with texture fractions (F0001) ranging from ∼9.6% to 93.6% were prepared by templated grain growth (TGG) of nanoscale matrix. Ceramic density directly controls F0001. Impingement of textured grains can be observed at F0001 ≥ 58.4%. When fracturing samples along [0 0 0 1], the interfaces between basal surfaces of the impinged textured grains provide a favorable path for crack deflection, and the deflection distance becomes longer with increasing F0001. As a result of both crack defection and high density, optimum fracture toughness ∼4.6 MPa.m1/2 and flexural strength ∼589 MPa were achieved at F0001 = 93.6%, which are much higher than those obtained in the randomly oriented counterpart. This work can provide guidelines for the design and synthesis of novel structural ceramics with improved performance.

AB - [0 0 0 1]-oriented alumina ceramics with texture fractions (F0001) ranging from ∼9.6% to 93.6% were prepared by templated grain growth (TGG) of nanoscale matrix. Ceramic density directly controls F0001. Impingement of textured grains can be observed at F0001 ≥ 58.4%. When fracturing samples along [0 0 0 1], the interfaces between basal surfaces of the impinged textured grains provide a favorable path for crack deflection, and the deflection distance becomes longer with increasing F0001. As a result of both crack defection and high density, optimum fracture toughness ∼4.6 MPa.m1/2 and flexural strength ∼589 MPa were achieved at F0001 = 93.6%, which are much higher than those obtained in the randomly oriented counterpart. This work can provide guidelines for the design and synthesis of novel structural ceramics with improved performance.

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SN - 0167-577X

VL - 221

SP - 252

EP - 255

JO - Materials Letters

JF - Materials Letters

ER -

Improved fracture behavior and mechanical properties of alumina textured ceramics

Abstract

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