Degeneration of thermal insulation property for Fe-based amorphous coating during long-term heat exposure

Xu, Fengfeng; Yao, Haihua; Tang, Kaizhi; Li, Yanze; Han, Feng-Xi; Tan, Zhen; He, Dingyong; Yang, Yange; Liu, Yanbo; Zhou, Zheng

doi:10.1016/j.jnoncrysol.2023.122203

Cited by 2 publications

(1 citation statement)

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“…Figure (3) shows the relationship between the reinforcing material (TiAlwt.%) and the adhesion strength before and after the thermal sintering process at a temperature of (1000°C) for a 1.5hour. This figure indicates that the adhesion strength increases with the increase of the reinforcing material that the adhesion strength increases with the increase in the reinforcing material, so the value of the adhesion strength was for 5%wt.TiAl it is 8MPa before sintering and 11MPa after sintering, while the value of adhesion strength at 25wt.%TiAl was 22 MPa before sintering, and it was 29 MPa after sintering, adhesion strength can be defined as the force equivalent to the force needed to remove a unit area of the coating layer from the cermet base If the sintering process clearly contributes to increasing the adhesion strength, as the sintering process leads to an increase in the kinetic energy of the material, and thus the vibrations of the coating particles increase, which makes the atoms of the coating material approach each other and thus they are more sticky and cohesive [30,31].…”

Section: Effect Of Stiffener On Adhesion Strength Of Cermet Coatingmentioning

confidence: 99%

Mechanical and Physical Properties of Al2O3-TiAl deposited by Thermal Spraying Method

Salih

Darweesh

Allah

2023

IJOIR

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In the current article, some physical properties of a system based on alumina (Al2O3) and supported by various weight ratios of TiAl were studied (5, 10, 15, 20, 25wt.%) by means of thermal spraying by flame, where oxygen gas was used at a pressure of 4bar, and acetylene at 0.7 bar. The base used for the coating is stainless steel type 316L, and a primary binder of 80%A1-20%Ni was coated with a thickness of approximately 100µm, while the base coating was 300µm thick, so that the total thickness was 400µm. The heat treatment of the final paint was carried out at a temperature of 1000°C for an hour and a half, after that physical tests were carried out through which the best mixing ratio was obtained, with a constant spraying distance of 16cm, and a constant spraying angle of 90° if found at that. The ideal conditions and after sintering that the best micro hardness is 56kg/mm2, the least porosity is 9.1%, and the highest adhesion strength is 29, while the results of the scanning electron microscope showed that the best mixing ratio is the 25wt.% in which the surface was homogeneous and has a consistent composition. An indication of the improvement of the samples with the continuation of repeated additions of the support material (TiAl).

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Section: Effect Of Stiffener On Adhesion Strength Of Cermet Coatingmentioning

confidence: 99%