Fabrication and properties of abradable sealing Al2024/hBN composites by hot-pressing sintering

ZHOU Lihua; FENG Qiang; HE Pengjiang; PAN Chaomei; LUO Hao; FU Naike; ZHU Jie; LI Zhi; SONG Xinqiang; ZENG Keli

doi:10.19591/j.cnki.cn11-1974/tf.2022080011

Fenmo yejin jishu (Aug 2024)

Fabrication and properties of abradable sealing Al2024/hBN composites by hot-pressing sintering

ZHOU Lihua,
FENG Qiang,
HE Pengjiang,
PAN Chaomei,
LUO Hao,
FU Naike,
ZHU Jie,
LI Zhi,
SONG Xinqiang,
ZENG Keli

Affiliations

ZHOU Lihua: Chengdu Jinjiang Machinery Factory, Chengdu 610043, China
FENG Qiang: Chengdu Jinjiang Machinery Factory, Chengdu 610043, China
HE Pengjiang: National Engineering Research Center for Powder Metallurgy of Titanium and Rare Metals, Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510650, China
PAN Chaomei: National Engineering Research Center for Powder Metallurgy of Titanium and Rare Metals, Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510650, China
LUO Hao: National Engineering Research Center for Powder Metallurgy of Titanium and Rare Metals, Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510650, China
FU Naike: National Engineering Research Center for Powder Metallurgy of Titanium and Rare Metals, Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510650, China
ZHU Jie: National Engineering Research Center for Powder Metallurgy of Titanium and Rare Metals, Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510650, China
LI Zhi: National Engineering Research Center for Powder Metallurgy of Titanium and Rare Metals, Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510650, China
SONG Xinqiang: National Engineering Research Center for Powder Metallurgy of Titanium and Rare Metals, Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510650, China
ZENG Keli: National Engineering Research Center for Powder Metallurgy of Titanium and Rare Metals, Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510650, China

DOI: https://doi.org/10.19591/j.cnki.cn11-1974/tf.2022080011
Journal volume & issue: Vol. 42, no. 4
pp. 396 – 402

Abstract

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The abradable sealing Al2024/hBN composites were produced by hot-pressing sintering. The influence of ball milling time on the microstructure and mechanical properties was investigated. The results show that, the Al2024/hBN composites sintered by hot-pressing sintering have a relatively higher density and hardness, up to 2.52 g/cm3 and HR15Y 90, respectively. With the extension of ball milling time, the microstructure of the composites significantly changes from the spherical particle to the lamellar structure, the friction coefficient and volume wear rate reduce, reaching the minimum of 0.32 and 2.3×10−3mm3·m−1·N−1, respectively. The maximum bending force increases with the ball milling time, from 1.2 kN to 2.3 kN in the three-point bending test at room temperature.

Published in Fenmo yejin jishu

ISSN: 1001-3784 (Print)
Publisher: Editorial Office of Powder Metallurgy Technology
Country of publisher: China
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://pmt.ustb.edu.cn/indexen.htm

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