Effect of La2O3 on properties of Al2O3 materials by hot-pressing sintering

Wenhan Wang; Xiaoyun Li; Tai Qiu

Effect of La₂O₃ on properties of Al₂O₃ materials by hot-pressing sintering

Wenhan Wang, Xiaoyun Li, Tai Qiu

材料科学与工程学院

Nanjing Tech University

科研成果: 期刊稿件 › 文章 › 同行评审

6 引用（Scopus）

摘要

Al₂O₃ materials with MgO and La₂O₃ as additives were prepared by hot-pressing. The density, microstructure and phase composition of the samples were studied by the Archimedes method, SEM and XRD. The mechanical properties were studied by the three-point bending test. The dielectric properties and gas tightness were studied by the resistance meter and helium mass spectrometer leak detector. The results show that the average grain size of the sample sintered at 1500°C is less than 1 μm. The bending strength of samples is more than 600 MPa. The dielectric loss is 4.00 × 10^-4 and the leak rate is 2.2×10^-9 Pa·m³ · s^-1 for the sample with 2% La₂O₃.

源语言	英语
页（从-至）	145-149
页数	5
期刊	Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica
卷	28
期	5
出版状态	已出版 - 10月 2011

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引用此

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title = "Effect of La2O3 on properties of Al2O3 materials by hot-pressing sintering",

abstract = "Al2O3 materials with MgO and La2O3 as additives were prepared by hot-pressing. The density, microstructure and phase composition of the samples were studied by the Archimedes method, SEM and XRD. The mechanical properties were studied by the three-point bending test. The dielectric properties and gas tightness were studied by the resistance meter and helium mass spectrometer leak detector. The results show that the average grain size of the sample sintered at 1500°C is less than 1 μm. The bending strength of samples is more than 600 MPa. The dielectric loss is 4.00 × 10-4 and the leak rate is 2.2×10-9 Pa·m3 · s-1 for the sample with 2% La2O3.",

keywords = "AlO, Bending strength, Dielectric properties, Gas tightness, Hot-pressed, Microstructure",

author = "Wenhan Wang and Xiaoyun Li and Tai Qiu",

year = "2011",

month = oct,

language = "英语",

volume = "28",

pages = "145--149",

journal = "Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica",

issn = "1000-3851",

publisher = "Beijing University of Aeronautics and Astronautics (BUAA)",

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TY - JOUR

T1 - Effect of La2O3 on properties of Al2O3 materials by hot-pressing sintering

AU - Wang, Wenhan

AU - Li, Xiaoyun

AU - Qiu, Tai

PY - 2011/10

Y1 - 2011/10

N2 - Al2O3 materials with MgO and La2O3 as additives were prepared by hot-pressing. The density, microstructure and phase composition of the samples were studied by the Archimedes method, SEM and XRD. The mechanical properties were studied by the three-point bending test. The dielectric properties and gas tightness were studied by the resistance meter and helium mass spectrometer leak detector. The results show that the average grain size of the sample sintered at 1500°C is less than 1 μm. The bending strength of samples is more than 600 MPa. The dielectric loss is 4.00 × 10-4 and the leak rate is 2.2×10-9 Pa·m3 · s-1 for the sample with 2% La2O3.

AB - Al2O3 materials with MgO and La2O3 as additives were prepared by hot-pressing. The density, microstructure and phase composition of the samples were studied by the Archimedes method, SEM and XRD. The mechanical properties were studied by the three-point bending test. The dielectric properties and gas tightness were studied by the resistance meter and helium mass spectrometer leak detector. The results show that the average grain size of the sample sintered at 1500°C is less than 1 μm. The bending strength of samples is more than 600 MPa. The dielectric loss is 4.00 × 10-4 and the leak rate is 2.2×10-9 Pa·m3 · s-1 for the sample with 2% La2O3.

KW - AlO

KW - Bending strength

KW - Dielectric properties

KW - Gas tightness

KW - Hot-pressed

KW - Microstructure

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JO - Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica

JF - Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica

IS - 5

ER -

Effect of La2O3 on properties of Al2O3 materials by hot-pressing sintering

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Effect of La₂O₃ on properties of Al₂O₃ materials by hot-pressing sintering