Improvement in the Thermal Shock Resistance of Zirconia Ceramic by the Addition of Aluminium Titanate

Wei, Heng; Yu, Li; Wang, Zhi Fa; Bu, Jing Long; Long, Shu; Wang, Yu

doi:10.4028/www.scientific.net/amr.194-196.1724

Cited by 6 publications

(3 citation statements)

References 8 publications

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“…They are widely used in industrial high-temperature furnace linings [11], such as crystal growth furnaces and ultra-high temperature sintering furnaces [12]. However, the thermal shock resistance of ZrO 2 berboards at high temperature is unsatisfactory, and its poor thermal shock resistance is mainly due to the large volume change caused by its high thermal expansion coe cient [13][14]. Under the condition of thermal shock, the high thermal expansion coe cient of the stable ZrO 2 induces larger thermal stress.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Al2TiO5 ceramic fibers and thermal expansion, insulation, and strength of ZrO2-Al2TiO5 fiberboards

Wei

Xie

Deng

et al. 2021

Preprint

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In the field of thermal insulation, Zirconia (ZrO2) fiber and its products have high thermal expansion coefficients and poor thermal shock resistance, which leads to great challenges in the industry. In this work, aluminum titanate (Al2TiO5) single-phase ceramic fibers were prepared by a sol-gel method, using polyacetylacetone titanium-aluminum (PAAT) as the precursors with electrospinning technology. The single-phase Al2TiO5 fibers exhibited excellent high-temperature resistance, and maintained fibers morphology at a high temperature of 1500 ºC. Next, ZrO2-Al2TiO5 (ZAT) fiberboards were prepared by mixing ZrO2 fibers and Al2TiO5 fibers. The mixture was heat-treated to 1500 ºC to prepare the ZAT fiberboards. Characterization results indicated that the contents of Al2TiO5 fibers have obvious effects on the performance of thermal insulation, strength, thermal expansion, and thermal shock resistance. Particularly, the thermal expansion coefficient of ZAT-8 fiberboards was about 20% lower than that of ZAT-0 fiberboards. These attractive characteristics might give ZAT fiberboards enormous potential in the field of high-temperature insulation.

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Section: Introductionmentioning

confidence: 99%

Preparation of Al2TiO5 ceramic fibers and thermal expansion, insulation, and strength of ZrO2-Al2TiO5 fiberboards

Wei

Xie

Deng

et al. 2021

Preprint

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“…These properties make Al2TiO5 a good choice for high-temperature applications such as exhaust port liners, valves, turbochargers, piston buttons, manifold insulations, swirl chambers and other internal combustion engines components. Moreover, aluminium titanate ceramics are suitable materials in many other crucial applications such as in burner nozzles, thermocouple sleeves and refractory crucibles for metal casting and flow regulations [15][16][17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Thermal Properties and Microstructural Characterization of Aluminium Titanate (Al2TiO5) / La2O3 -Stabilized Zirconia (ZrO2) Ceramics

Boyraz

2018

Cumhuriyet Science Journal

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In this paper defined the productions and densification behaviour of 8 mole% Lanthana (Lanthanum oxide, La2O3) -stabilized Zirconia (Zirconium Oxide, ZrO2) based composites fabricated by the conventional ceramic production process. La2O3 stabilized zirconia (LSZ, with mole 8% La2O3) has excellent high temperature properties like low thermal conductivity, mechanical properties, elevated melting point, high toleration for thermal shock, superior oxidation resistance and well phase stability. Aluminium titanate (Al2TiO5) low thermal conductivity coupled with well chemical resistance in melted metals and exhibit extremely well thermal shock resistance. In this study, Aluminium titanate / LSZ ceramic with different proportions of Al2TiO5 was prepared by powder metallurgy techniques. The mechanical, thermal and microstructural properties were characterized by XRD, SEM, hardness and dilatometer. The thermal shock resistance performance under water quenching of the as-prepared ceramics was also estimated. As a results shown that the adding of aluminium titanate to LSZ matrix improves the properties of the aluminium titanate / LSZ ceramics.Özet: Bu yazıda, geleneksel seramik üretim yöntemleri ile imal edilen% 8 mol Lanthana (Lantanyum oksit, La2O3) ile stabilize edilmiş Zirkonya (Zirkonyum Oksit, ZrO2) esaslı kompozitlerin üretim ve yoğunlaşma davranışları anlatılmaktadır. , La2O3 ile Stabilize edilmiş (dengelenmiş) zirkonyum dioksit (LSZ, mol% 8 La2O3 ile) termal darbeye karşı yüksek tolerans, düşük termal iletkenlik, mekanik özellikler, yüksek erime noktası, iyi bir faz dengesi ve mükemmel oksidasyon direnci gibi yüksek üstün sıcaklık özelliklerine sahiptir. Alüminyum titanat (Al2Ti05), erimiş metallerde iyi kimyasal dirençle birlikte, termal şok direnci ve düşük termal iletkenliğe sahiptir. Bu çalışmada, farklı yüzdelerdeki Al2TiO5 ile alüminyum titanat / LSZ seramikleri toz metalurjisi teknikleri kullanılarak hazırlandı. Mikroyapısal, mekanik ve termal özellikler XRD, SEM, dilatometre ve sertlik ile karakterize edildi. Hazırlanan seramiklerin suda soğutulmasıyla termal şok direnci davranışı da değerlendirildi. Sonuçlar, alüminyum titanatın LSZ matrisine eklenmesinin alüminyum titanat / LSZ seramiklerinin özelliklerini geliştirdiğini ortaya koydu.

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“…In the literature, Wei et al prepared ZrO 2 Al 2 TiO 5 composite materials with high bending strength and good thermal shock resistance expansion using partially stabilized zirconia (Y-PSZ) powders coated with Al 2 TiO 5 by co-precipitation method [12]. Shimada et al found that aluminium titanate was strengthened by alloying with 3 mol.% yttria stabilized zirconia to attain a small expansion coecient of 2 × 10 −6 and a high strength of 100 MPa [13].…”

Section: Introductionmentioning

confidence: 99%

Microstructural Characterization and Thermal Properties of Aluminium Titanate/YSZ Ceramics

Çitak

Boyraz

2014

Acta Phys. Pol. A

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Yttria stabilized zirconia (YSZ, with 3 mol.% Y2O3) has superior high temperature properties such as high tolerance for thermal shock, low thermal conductivity, mechanical properties, elevated melting point, good phase stability, and excellent oxidation resistance. Aluminium titanate (Al2TiO5) exhibits extremely good thermal shock resistance and low thermal conductivity coupled with good chemical resistance in molten metals. In the present work, aluminium titanate/YSZ ceramics with dierent percentages of Al2TiO5 was prepared using powder metallurgy techniques. The microstructural, mechanical and thermal properties were characterized using X-ray diraction, scanning electron microscopy, dierential scanning calorimetry, dilatometer and hardness. Thermal shock resistance behaviour under water quenching of the as-prepared ceramics was also evaluated. The results revealed that the addition of aluminium titanate to YSZ matrix improves the properties of the aluminium titanate/ YSZ ceramics.

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Improvement in the Thermal Shock Resistance of Zirconia Ceramic by the Addition of Aluminium Titanate

Cited by 6 publications

References 8 publications

Preparation of Al2TiO5 ceramic fibers and thermal expansion, insulation, and strength of ZrO2-Al2TiO5 fiberboards

Preparation of Al2TiO5 ceramic fibers and thermal expansion, insulation, and strength of ZrO2-Al2TiO5 fiberboards

Thermal Properties and Microstructural Characterization of Aluminium Titanate (Al2TiO5) / La2O3 -Stabilized Zirconia (ZrO2) Ceramics

Microstructural Characterization and Thermal Properties of Aluminium Titanate/YSZ Ceramics

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