Study on Coating Material and Preparation Technology of Aluminum Alloy Tube by Low Temperature Self-Propagating Molding

Zhong Xun Wang; Shu Ai Zhang; Qin Xing; Bao Shan Liu; Gang Zhang

doi:10.4028/www.scientific.net/MSF.1026.157

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HomeMaterials Science ForumMaterials Science Forum Vol. 1026Study on Coating Material and Preparation...

Study on Coating Material and Preparation Technology of Aluminum Alloy Tube by Low Temperature Self-Propagating Molding

Abstract:

Low temperature self-propagating forming coating material system for aluminum alloy cylinder parts was designed with Al, Fe₂O₃, Mo, Cu, Ni and Ti powders as raw materials. Low temperature self-propagating wear-resistant coating was prepared on the inner wall of aluminum alloy cylinder parts by thermal spraying ignition condensation centrifugal self-propagating fusion technology. XRD, DSC and SEM were used to study the microstructure, thermodynamic properties and cross-section morphology of the coating after thermal reaction of four kinds of low-temperature self-propagating materials with different proportions. The preparation process parameters of the coating were optimized by orthogonal test, including the amount of coating, the rotation speed of self-propagating centrifuge and the reaction time of self-propagating coating. The results show that the addition of Si, Mo and Zn powders in the four low temperature self-propagating powder systems can reduce the occurrence temperature of aluminothermic reaction; the optimal process parameters for coating preparation are rotational speed of 2000r/min, powder filling amount of 0.9g/cm³ and rotational reaction time of 16S.The results show that the coating with 20wt.% Al, 60wt.% Fe₂O₃, 12wt.% Si, 4wt.% Mo and 4wt.% Zn has better density and interface adhesion.

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Periodical:

Materials Science Forum (Volume 1026)

Pages:

157-162

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.1026.157

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Online since:

April 2021

Authors:

Zhong Xun Wang*, Shu Ai Zhang, Qin Xing, Bao Shan Liu, Gang Zhang

Keywords:

Aluminum Alloy Cylinder Type Parts, Coating, Low Temperature Self-Propagating Material, Process Parameters

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