Investigation of physico-mechanical and metallurgical characteristics in a single lap joining of polybutylene terephthalate (PBT) with aluminum alloy through surface modifications

Abstract In this manuscript, the joining of aluminum-magnesium-silicon alloy (AA6082) with polybutylene terephthalate (PBT) has been carried out through the hot press joining method. Surface treatments of the AA6082 samples were carried out through mechanical, chemical, and plasma treatments, and wi...

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Main Authors: Dufera Bulto, Devendra Kumar Sinha
Format: Article
Language:English
Published: SpringerOpen 2025-08-01
Series:Journal of Engineering and Applied Science
Subjects:
Online Access:https://doi.org/10.1186/s44147-025-00686-w
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author Dufera Bulto
Devendra Kumar Sinha
author_facet Dufera Bulto
Devendra Kumar Sinha
author_sort Dufera Bulto
collection DOAJ
description Abstract In this manuscript, the joining of aluminum-magnesium-silicon alloy (AA6082) with polybutylene terephthalate (PBT) has been carried out through the hot press joining method. Surface treatments of the AA6082 samples were carried out through mechanical, chemical, and plasma treatments, and with their combination. In this investigation, the joining of dissimilar materials using hot pressing technology was employed with plasma treatment of aluminum alloy surfaces and assisted with glass fiber between the two substrates to increase bonding strength. It was found that if the surface treatment was carried out individually through plasma treatment, sandblasted, grounded, and untreated, then the shearing force of product samples with a magnitude of (0.71, 1.11, 0.94, and 0.38) kN was observed, respectively. The observation revealed that the maximum shear force attained a magnitude of 2.01 kN when the surfaces were blasted and anodized aided with two plies of glass fibers. The surface morphology of the tested specimens was characterized by scanning electron microscopy. The optimum plasma parameters were determined through water contact angle measurements, and the best wettability of aluminum alloy samples was found when three different plasma parameters at (plasma power 150 W, gas exposure time 10 min, and nozzle tip distances 2 mm) using argon gas, and a 3.1° water contact angle was measured. The current study is expected to benefit the automotive and aerospace industries in applications of fabricating body parts leading to a higher strength-to-weight ratio.
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spelling doaj-art-a443711efc4e4abbbe5cb5cb2fd8d3182025-08-20T03:05:24ZengSpringerOpenJournal of Engineering and Applied Science1110-19032536-95122025-08-0172111910.1186/s44147-025-00686-wInvestigation of physico-mechanical and metallurgical characteristics in a single lap joining of polybutylene terephthalate (PBT) with aluminum alloy through surface modificationsDufera Bulto0Devendra Kumar Sinha1Mechanical Engineering Department, College of Mechanical Chemical and Materials Engineering, Adama Science and Technology UniversityMechanical Engineering Department, College of Mechanical Chemical and Materials Engineering, Adama Science and Technology UniversityAbstract In this manuscript, the joining of aluminum-magnesium-silicon alloy (AA6082) with polybutylene terephthalate (PBT) has been carried out through the hot press joining method. Surface treatments of the AA6082 samples were carried out through mechanical, chemical, and plasma treatments, and with their combination. In this investigation, the joining of dissimilar materials using hot pressing technology was employed with plasma treatment of aluminum alloy surfaces and assisted with glass fiber between the two substrates to increase bonding strength. It was found that if the surface treatment was carried out individually through plasma treatment, sandblasted, grounded, and untreated, then the shearing force of product samples with a magnitude of (0.71, 1.11, 0.94, and 0.38) kN was observed, respectively. The observation revealed that the maximum shear force attained a magnitude of 2.01 kN when the surfaces were blasted and anodized aided with two plies of glass fibers. The surface morphology of the tested specimens was characterized by scanning electron microscopy. The optimum plasma parameters were determined through water contact angle measurements, and the best wettability of aluminum alloy samples was found when three different plasma parameters at (plasma power 150 W, gas exposure time 10 min, and nozzle tip distances 2 mm) using argon gas, and a 3.1° water contact angle was measured. The current study is expected to benefit the automotive and aerospace industries in applications of fabricating body parts leading to a higher strength-to-weight ratio.https://doi.org/10.1186/s44147-025-00686-wHot press joiningAnodizingJoiningPolybutylene terephthalateSurface treatmentShearing force
spellingShingle Dufera Bulto
Devendra Kumar Sinha
Investigation of physico-mechanical and metallurgical characteristics in a single lap joining of polybutylene terephthalate (PBT) with aluminum alloy through surface modifications
Journal of Engineering and Applied Science
Hot press joining
Anodizing
Joining
Polybutylene terephthalate
Surface treatment
Shearing force
title Investigation of physico-mechanical and metallurgical characteristics in a single lap joining of polybutylene terephthalate (PBT) with aluminum alloy through surface modifications
title_full Investigation of physico-mechanical and metallurgical characteristics in a single lap joining of polybutylene terephthalate (PBT) with aluminum alloy through surface modifications
title_fullStr Investigation of physico-mechanical and metallurgical characteristics in a single lap joining of polybutylene terephthalate (PBT) with aluminum alloy through surface modifications
title_full_unstemmed Investigation of physico-mechanical and metallurgical characteristics in a single lap joining of polybutylene terephthalate (PBT) with aluminum alloy through surface modifications
title_short Investigation of physico-mechanical and metallurgical characteristics in a single lap joining of polybutylene terephthalate (PBT) with aluminum alloy through surface modifications
title_sort investigation of physico mechanical and metallurgical characteristics in a single lap joining of polybutylene terephthalate pbt with aluminum alloy through surface modifications
topic Hot press joining
Anodizing
Joining
Polybutylene terephthalate
Surface treatment
Shearing force
url https://doi.org/10.1186/s44147-025-00686-w
work_keys_str_mv AT duferabulto investigationofphysicomechanicalandmetallurgicalcharacteristicsinasinglelapjoiningofpolybutyleneterephthalatepbtwithaluminumalloythroughsurfacemodifications
AT devendrakumarsinha investigationofphysicomechanicalandmetallurgicalcharacteristicsinasinglelapjoiningofpolybutyleneterephthalatepbtwithaluminumalloythroughsurfacemodifications