Coating of Y2O3 additive on Al2O3 powder and its effect on the wetting behaviour in the system Al2O3p/Al

Zhiqiang Yu; Gaohui Wu; Dongli Sun; Longtao Jiang

doi:10.1016/S0167-577X(03)00006-5

Coating of Y₂O₃ additive on Al₂O₃ powder and its effect on the wetting behaviour in the system Al₂O_3p/Al

Zhiqiang Yu^*
, Gaohui Wu
, Dongli Sun
, Longtao Jiang

^*Corresponding author for this work

Harbin Institute of Technology

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

36 Scopus citations

Abstract

Al₂O₃ powder was coated with Y₂O₃ percursor generated by in situ precipitation of Y(NO₃)₃·6H₂O in aqueous solution. After calcining at high temperature, the precursor was completely transformed into a crystalline Y₂O₃, and Y₂O₃-coated Al₂O₃ powder was obtained. Transmission electron microscope (TEM), high resolution electron microscope (HREM) observation and elemental analysis clearly showed that the Y₂O₃ was successfully coated on the surface of the Al₂O₃ particles. The coated powders were also characterized by energy dispersive spectrum (EDAX) and X-ray diffractometry (XRD). The wetting behaviour of molten aluminum on the coated Al₂O₃ powders was investigated by the sessile drop method. Due to the introduction of Y₂O₃, the wettability of the coated-Al₂O₃ powders by liquid aluminum was dramatically improved in comparison with that of the as-received powders.

Original language	English
Pages (from-to)	3111-3116
Number of pages	6
Journal	Materials Letters
Volume	57
Issue number	20
DOIs	https://doi.org/10.1016/S0167-577X(03)00006-5
State	Published - Jun 2003
Externally published	Yes

Keywords

Alumina
Aluminum matrix composite
Powder coating
Wettability

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10.1016/S0167-577X(03)00006-5

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title = "Coating of Y2O3 additive on Al2O3 powder and its effect on the wetting behaviour in the system Al2O3p/Al",

abstract = "Al2O3 powder was coated with Y2O3 percursor generated by in situ precipitation of Y(NO3)3·6H2O in aqueous solution. After calcining at high temperature, the precursor was completely transformed into a crystalline Y2O3, and Y2O3-coated Al2O3 powder was obtained. Transmission electron microscope (TEM), high resolution electron microscope (HREM) observation and elemental analysis clearly showed that the Y2O3 was successfully coated on the surface of the Al2O3 particles. The coated powders were also characterized by energy dispersive spectrum (EDAX) and X-ray diffractometry (XRD). The wetting behaviour of molten aluminum on the coated Al2O3 powders was investigated by the sessile drop method. Due to the introduction of Y2O3, the wettability of the coated-Al2O3 powders by liquid aluminum was dramatically improved in comparison with that of the as-received powders.",

keywords = "Alumina, Aluminum matrix composite, Powder coating, Wettability",

author = "Zhiqiang Yu and Gaohui Wu and Dongli Sun and Longtao Jiang",

year = "2003",

month = jun,

doi = "10.1016/S0167-577X(03)00006-5",

language = "英语",

volume = "57",

pages = "3111--3116",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

number = "20",

}

TY - JOUR

T1 - Coating of Y2O3 additive on Al2O3 powder and its effect on the wetting behaviour in the system Al2O3p/Al

AU - Yu, Zhiqiang

AU - Wu, Gaohui

AU - Sun, Dongli

AU - Jiang, Longtao

PY - 2003/6

Y1 - 2003/6

N2 - Al2O3 powder was coated with Y2O3 percursor generated by in situ precipitation of Y(NO3)3·6H2O in aqueous solution. After calcining at high temperature, the precursor was completely transformed into a crystalline Y2O3, and Y2O3-coated Al2O3 powder was obtained. Transmission electron microscope (TEM), high resolution electron microscope (HREM) observation and elemental analysis clearly showed that the Y2O3 was successfully coated on the surface of the Al2O3 particles. The coated powders were also characterized by energy dispersive spectrum (EDAX) and X-ray diffractometry (XRD). The wetting behaviour of molten aluminum on the coated Al2O3 powders was investigated by the sessile drop method. Due to the introduction of Y2O3, the wettability of the coated-Al2O3 powders by liquid aluminum was dramatically improved in comparison with that of the as-received powders.

AB - Al2O3 powder was coated with Y2O3 percursor generated by in situ precipitation of Y(NO3)3·6H2O in aqueous solution. After calcining at high temperature, the precursor was completely transformed into a crystalline Y2O3, and Y2O3-coated Al2O3 powder was obtained. Transmission electron microscope (TEM), high resolution electron microscope (HREM) observation and elemental analysis clearly showed that the Y2O3 was successfully coated on the surface of the Al2O3 particles. The coated powders were also characterized by energy dispersive spectrum (EDAX) and X-ray diffractometry (XRD). The wetting behaviour of molten aluminum on the coated Al2O3 powders was investigated by the sessile drop method. Due to the introduction of Y2O3, the wettability of the coated-Al2O3 powders by liquid aluminum was dramatically improved in comparison with that of the as-received powders.

KW - Alumina

KW - Aluminum matrix composite

KW - Powder coating

KW - Wettability

UR - https://www.scopus.com/pages/publications/0038237669

U2 - 10.1016/S0167-577X(03)00006-5

DO - 10.1016/S0167-577X(03)00006-5

M3 - 文章

AN - SCOPUS:0038237669

SN - 0167-577X

VL - 57

SP - 3111

EP - 3116

JO - Materials Letters

JF - Materials Letters

IS - 20

ER -

Coating of Y₂O₃ additive on Al₂O₃ powder and its effect on the wetting behaviour in the system Al₂O_3p/Al

Abstract

Keywords

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