TEM study on the interfacial reaction of Al18B4O33/Al composites

Li, Yao; Fukunaga, Hideharu

doi:10.1016/s1359-6462(97)00029-8

Cited by 33 publications

(10 citation statements)

References 4 publications

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“…On the one hand, in ABOw/Al composite, the interface is smooth and microvoids and cracks form at the interface due to the poor wettability of ABOw by molten aluminum. 14 So the interfacial bonding strength is weak in the composite, which makes it easier to propagate along the whisker/matrix interface and presents more pull-outs of whiskers on the fractural surfaces. However, in 10ABOw/ZnO/Al and 10ABOw/ ZnAl 2 O 4 /Al composites, the coatings of ABOw can improve the interfacial wettability during squeeze casting, 11 which greatly decreases the microvoids and cracks at the interface and enhances the interfacial bonding strength.…”

Section: Discussionmentioning

confidence: 99%

Tensile properties of ZnO- and ZnAl₂O₄-coated aluminum borate whiskers reinforced aluminum composites at elevated temperatures

Guo

Yue

Fei

et al. 2011

Journal of Composite Materials

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ZnO- and ZnAl2O4-coated aluminum borate whiskers reinforced pure aluminum composites were fabricated by squeeze casting. The tensile properties of the composites at elevated temperatures were tested. The results indicate that the maximum tensile stress of the composite decreases with the increase of tensile temperature; however, the tensile strain of the composite initially increases and later declines. ZnO, especially, ZnAl2O4 coating of the whiskers can effectively improve the ultimate tensile strength of the composite at elevated temperatures. On the basis of fractographic analysis, the fracture mechanisms of the composites at elevated temperatures were also investigated.

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Section: Discussionmentioning

confidence: 99%

Tensile properties of ZnO- and ZnAl₂O₄-coated aluminum borate whiskers reinforced aluminum composites at elevated temperatures

Guo

Yue

Fei

et al. 2011

Journal of Composite Materials

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“…[5][6][7] Unfortunately, the wettability of Al 18 B 4 O 33 w by molten aluminium is generally poor during squeeze casting, so microvoids and cracks are often found to be formed at the interface according to previous research. 8 The study on the improvement of Young's modulus of Al 18 B 4 O 33 w/Al composite has thus far been limited through interface engineering.…”

Section: Introductionmentioning

confidence: 99%

Effect of ZnAl₂O₄ coating of whisker surface on Young's modulus of Al₁₈B₄O₃₃w/Al composite

Yue

Fei

Guo

et al. 2011

Materials Science and Technology

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Pure aluminium matrix composites reinforced by ZnAl 2 O 4 coated Al 18 B 4 O 33 whiskers were fabricated by squeeze casting. The effect of ZnAl 2 O 4 coating on the Young's modulus of the composite was investigated. The results show that the Young's modulus of the composite significantly increases with increasing ZnAl 2 O 4 coating content. The influence mechanisms of ZnAl 2 O 4 coating on the Young's modulus of the composite were analysed. The increase in load transfer area of whisker/matrix interface and the volume fraction of effective reinforcement with increasing ZnAl 2 O 4 coating content can increase the Young's modulus of the composites. The steps can provide an additional load transfer from the matrix to whiskers during the tensile deformation of the composites.

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“…However, in ABOw/Al composites, poor wettability and excessive interfacial reactions are regarded as the major obstacles to synthesize high-performance materials with full use of their potentials [4][5][6][7]. During squeeze casting, poor wettablity of ABOw by molten aluminum makes the fabrication difficult and results in incomplete infiltration.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties and thermal stability of ZnAl2O4-coated aluminum borate whiskers reinforced 2024Al composite

2008

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ZnAl 2 O 4 -coated aluminum borate whiskers reinforced 2024Al composite was fabricated by squeeze casting. Interfacial microstructures and tensile properties of the composite were investigated. The results show that ZnAl 2 O 4 coating of the whiskers can improve the wettability of the whiskers by molten aluminum during squeeze casting, resulting in the increase of tensile properties of the composite. During thermal exposure, ZnAl 2 O 4 at the interface can effectively hinder harmful interfacial reactions, resulting in the improvement of thermal stability of the composite at high temperatures. Fracture mechanisms of the composite in as-cast and after thermal exposure were also investigated.

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TEM study on the interfacial reaction of Al18B4O33/Al composites

Cited by 33 publications

References 4 publications

Tensile properties of ZnO- and ZnAl₂O₄-coated aluminum borate whiskers reinforced aluminum composites at elevated temperatures

Tensile properties of ZnO- and ZnAl₂O₄-coated aluminum borate whiskers reinforced aluminum composites at elevated temperatures

Effect of ZnAl₂O₄ coating of whisker surface on Young's modulus of Al₁₈B₄O₃₃w/Al composite

Mechanical properties and thermal stability of ZnAl2O4-coated aluminum borate whiskers reinforced 2024Al composite

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TEM study on the interfacial reaction of Al18B4O33/Al composites

Cited by 33 publications

References 4 publications

Tensile properties of ZnO- and ZnAl2O4-coated aluminum borate whiskers reinforced aluminum composites at elevated temperatures

Tensile properties of ZnO- and ZnAl2O4-coated aluminum borate whiskers reinforced aluminum composites at elevated temperatures

Effect of ZnAl2O4 coating of whisker surface on Young's modulus of Al18B4O33w/Al composite

Mechanical properties and thermal stability of ZnAl2O4-coated aluminum borate whiskers reinforced 2024Al composite

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Tensile properties of ZnO- and ZnAl₂O₄-coated aluminum borate whiskers reinforced aluminum composites at elevated temperatures

Tensile properties of ZnO- and ZnAl₂O₄-coated aluminum borate whiskers reinforced aluminum composites at elevated temperatures

Effect of ZnAl₂O₄ coating of whisker surface on Young's modulus of Al₁₈B₄O₃₃w/Al composite