Special Issue "Selected Papers from the NMJ2018"

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Optics and Lasers".

Deadline for manuscript submissions: 5 December 2018

Special Issue Editors

Guest Editor
Dr. Anming Hu

509 Dougherty Engineering Building, Department of Mechanical, Aerospace and Biomedical, University of Tennessee, Knoxville, TN, USA
Website | E-Mail
Phone: +1-865-974-5993
Fax: +1-865-974-5274
Interests: ultrafast laser materials interaction and processing; laser micro-nano manufacturing; laser 3D printing; nano-photonics; nanotechnology for electronics; sensing, energy and environmental applications
Guest Editor
Prof. Dr. Jolanta Janczak-Rusch

Überlandstrasse 129, Laboratory for Joining Technologies and Corrosion, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
Website | E-Mail
Phone: +41 58 765 4529
Interests: micro- and nano-joining, soldering, brazing and diffusion bonding, new joining materials and technologies, nano-multilayers, composite materials
Guest Editor
Dr. Sano Tomokazu

2-1 Yamada-Oka, Suita, Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan
Website | E-Mail
Phone: +81-6-6879-7537
Fax: +81-6-6879-7537
Interests: laser nano, micro, macro-processing, laser nano/micro-joining, laser-matter interaction
Guest Editor
Dr. Peng Peng

Department of Materials Processing and Control Engineering, School of Mechanical Engineering and Automation, International Research Institute for Multidisciplinary Science, Beihang University, Beijing, 100191, China
Website | E-Mail
Phone: (+86)-130-5148-3485
Interests: micro/nano-joining and manufacturing, laser sintering, low temperature packaging for electronics, nanoengineering for water treatment

Special Issue Information

Dear Colleagues:

After the successful conferences in Niagara Falls, Canada in 2016 (NMJ2016), Emmetten, Switzerland in 2014 (NMJ2014) and Beijing, China in 2012 (NMJ2012), it is our pleasure to invite you to the 4th International Conference on Nanojoining and Microjoining (NMJ2018), which will be held in Nara, Japan on December 2–5, 2018. The conference provides a platform for scientific and industrial discussion and exchange in the emerging fields of nano and micro joining technologies, as follows:

  • Joining for integration of nano-/micro-scale materials and devices
  • Micro joining for assembly of implantable medical devices
  • Method development for nano/micro joint characterization
  • Mechanisms and materials science of nano-/micro joining
  • Process issues in nano/micro joining

The main goal of this special issue, “special issue of NMJ2018”, is to advance the new science and technology in the fields of e.g. micro-electronics, medical implants, sensing devices and packaging, which have an urgent need for advanced joining technologies to integrate, package and assemble nano- and micro-scale materials and components at ever-low temperatures. In the micro-devices and micro-systems, innovative microjoining are still needed to allow faster and more reliable fabrication and long life services. In the field of nanojoining, printed electronics, wearable and flexible electronics, 3D printing at nanoscale resolution and molecular electronics are the emergent applications in the coming decades. We invite investigators interested in nano- and microjoining innovation to contribute to this issue, the topics will cover all fields of NMJ2018.

Dr. Anming Hu
Prof. Dr. Jolanta Janczak-Rusch
Dr. Sano Tomokazu
Dr. Peng Peng
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Nanojoining Microjoining Interfacial diffusions for micro- and nanojoining
  • Micro- and nanoscopic additive manufacturing
  • nano-/micro-scale materials
  • nano-/micro-scale devices
  • implantable medical devices
  • nano/micro joint characterization

Published Papers (3 papers)

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Research

Open AccessArticle Influence of Preheating Temperature on Cold Metal Transfer (CMT) Welding–Brazing of Aluminium Alloy/Galvanized Steel
Appl. Sci. 2018, 8(9), 1659; https://doi.org/10.3390/app8091659
Received: 20 August 2018 / Revised: 10 September 2018 / Accepted: 11 September 2018 / Published: 14 September 2018
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Abstract
Bead-on-plate cold metal transfer (CMT) brazing and overlap CMT welding–brazing of 7075 aluminium alloy and galvanized steel at different preheating temperatures were studied. The results indicated that AlSi5 filler wire had good wettability to galvanized steel. The preheating treatment can promote the spreadability
[...] Read more.
Bead-on-plate cold metal transfer (CMT) brazing and overlap CMT welding–brazing of 7075 aluminium alloy and galvanized steel at different preheating temperatures were studied. The results indicated that AlSi5 filler wire had good wettability to galvanized steel. The preheating treatment can promote the spreadability of liquid AlSi5. For the overlap CMT welding–brazed joint, the microstructure of the joint was divided into four zones, namely, the interfacial layer, weld metal zone, zinc-rich zone, and heat affected zone (HAZ). The load force of the joints without preheating and 100 °C preheating temperature was 8580 N and 9730 N, respectively. Both of the joints were fractured in the fusion line with a ductile fracture. Further increasing the preheating temperature to 200 °C would decrease the load force of the joint, which fractured in the interfacial layer with a brittle fracture. Full article
(This article belongs to the Special Issue Selected Papers from the NMJ2018)
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Open AccessFeature PaperArticle Self-Powered Fast Brazing of Ti-6Al-4V Using Ni/Al Reactive Multilayer Films
Appl. Sci. 2018, 8(6), 985; https://doi.org/10.3390/app8060985
Received: 26 May 2018 / Revised: 8 June 2018 / Accepted: 12 June 2018 / Published: 15 June 2018
PDF Full-text (6305 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Self-powered brazing of Ti-6Al-4V was performed using Ni/Al reactive multilayer films (RMFs) as self-propagated heat resources. BAlSi-4 was first coated on Ti-6Al-4V by plasma welding, then alternating layers of Ni and Al were successfully deposited on BAlSi-4 up to 32.9 μm thick with
[...] Read more.
Self-powered brazing of Ti-6Al-4V was performed using Ni/Al reactive multilayer films (RMFs) as self-propagated heat resources. BAlSi-4 was first coated on Ti-6Al-4V by plasma welding, then alternating layers of Ni and Al were successfully deposited on BAlSi-4 up to 32.9 μm thick with e-beam deposition. The joint microstructure was investigated and the AlNi and Ni5Al3 phases were identified in the RMF. The cause for the two phases was determined to be differences in the diffusivity of Ni and Al, ultrafast brazing time, and faster cooling at the interface between brazing filler metal and the RMF. The maximum temperature of 683 °C was reached in the brazed joint, with a total RMF thickness of 135 μm, which is more than sufficient to melt the BAlSi-4 brazing material. The maximum bonding strength obtained was 10.6 MPa, with a self-power brazing procedure conducted in a minute. It is possible to further improve the bonding strength by using more ductile RMFs and/or modifying the bonding interface configuration. Full article
(This article belongs to the Special Issue Selected Papers from the NMJ2018)
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Open AccessArticle Diode Laser Welding/Brazing of Aluminum Alloy to Steel Using a Nickel Coating
Appl. Sci. 2018, 8(6), 922; https://doi.org/10.3390/app8060922
Received: 18 May 2018 / Revised: 29 May 2018 / Accepted: 30 May 2018 / Published: 4 June 2018
PDF Full-text (4582 KB) | HTML Full-text | XML Full-text
Abstract
Joining Al alloy to steel is of great interest for application in the automotive industry. Although a vast number of studies have been conducted to join Al to steel, the joining of Al to steel is still challenging due to the formation of
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Joining Al alloy to steel is of great interest for application in the automotive industry. Although a vast number of studies have been conducted to join Al to steel, the joining of Al to steel is still challenging due to the formation of brittle Fe–Al intermetallic compounds. In this work, the microstructure and mechanical properties of the dissimilar Al/steel joints with and without a nickel coating are comparatively investigated. A homogenous reaction layer composed of FeZn10 and Fe2Al5 is formed at the interface in the joints without Ni coating, and the joint facture load is only 743 N. To prevent the formation of brittle Fe2Al5, Ni electroplated coating is applied onto a steel surface. It has been shown that a nonhomogeneous reaction layer is observed at the interfacial region: Ni5Zn21 is formed at the direct irradiation zone, while Al3Ni is formed at the fusion zone root. The microhardness of the interfacial layer is reduced, which leads to the improvement of the joint mechanical properties. The average fracture load of the Al/Ni-coated steel joints reaches 930 N. In all of the cases, failure occurs at the Ni coating/fusion zone interface. Full article
(This article belongs to the Special Issue Selected Papers from the NMJ2018)
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