Ag、Co、Cr元素对锡基巴氏合金显微组织及结合性能的影响
Effect of Ag, Co and Cr on Microstructure and Bonding Property of tin-based Babbitt Alloy
- 2023年53卷第11期 页码:113-118
收稿:2023-04-20,
纸质出版:2023-11-25
DOI: 10.7512/j.issn.1001-2303.2023.11.18
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收稿:2023-04-20,
纸质出版:2023-11-25
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为解决巴氏合金承载能力低、与钢基体结合强度差等问题,采用感应熔炼工艺制备了SnSb12Cu7.5Ni0.9-
x
(Ag、Co、Cr)巴氏合金,研究了添加微量元素Ag、Co、Cr对巴氏合金SnSb12Cu7.5Ni0.9微观组织、界面形貌及结合强度的作用规律。结果表明,SnSb12Cu7.5Ni0.9合金中分别添加1%的Ag、Co、Cr元素后,组织中的方块状SnSb相细化且略有钝化,颗粒状η相(Cu
6
Sn
5
)相由细长条状逐渐转变为蠕虫状。巴氏合金/钢基体界面处存在一层相互连接的过渡层,添加1%Ag、Co、Cr后界面处过渡层厚度增加,组织均匀性得到改善,并提高了巴氏合金/钢基体结合强度,其中添加1%Co元素的结合强度最高,为51.9 MPa,较基体提高了13%。
Babbitt alloy SnSb12Cu7.5Ni0.9-X (Ag
Co
Cr) was prepared by induction smelting. The effects of trace elements Ag
Co and Cr on the microstructure
interfacial morphology and bonding strength of SnSb12Cu7.5Ni0.9 were studied. The results show that with the addition of 1% Ag
Co and Cr
the square SnSb phase in SnSb12Cu7.5Ni0.9 alloy structure is refined and slightly passivated. And granular η The phase (Cu
6
Sn
5
) changes from slender strip to worm-like. There is a layer of interconnected transition layer at the interface between the pasteurized alloy and the steel base. With the addition of 1wt.% Ag
Co and Cr
the thickness of the excessive layer at the interface increases and the uniformity of the structure improves. It can also improve the bonding strength of pasteurized alloy/steel matrix. The highest bonding strength is 51.9 MPa when 1wt.% Co is added
which is 13% higher than that of the matrix.
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