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Green Manufacturing of Materials: Properties and Sustainability
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Green Manufacturing of Materials: Properties and Sustainability

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Manufacturing Processes and Systems".

Deadline for manuscript submissions: closed (20 August 2023) | Viewed by 5092

Special Issue Editors

Prof. Dr. Kazem Abhary

E-Mail Website
Guest Editor
STEM Unit, University of South Australia, Adelaide SA 5000, Australia
Interests: mechanical and manufacturing design for sustainability; design for manufacture and assembly; phononic materials
Dr. Sherif Araby Gouda

E-Mail Website
Assistant Guest Editor
Department of Mechanical and Aerospace Engineering,School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan city, Kazakhstan
Interests: flame retarding polymers; multifunctional epoxy adhesives; smart polymer/graphene nanocomposite films; high performance polymer/2D material nanocomposites and 3D printing metal composites

Special Issue Information

Dear Colleagues

Materials constitute the foundation of products. Frequently, the expected functions to be delivered by a product imply the design and manufacture of a new material. This is why research on materials is a regular demand and how composite, nano, photonic, phononic, smart materials and others were conceived and are under continuous development, and new materials are being researched.

However, the environment is currently a top concern. Materials leave a trace in the environment during manufacturing and after their retirement. The more environmentally friendly the materials, the more sustainable they are, and the less their impacts on the environment; environmentally friendly materials are also more recyclable and/or reusable. Thus, the design of materials for sustainability and/or green manufacturing is of paramount importance and priority, and the concern of this Special Issue. The degree of sustainability and green manufacturability of materials, and hence the degree of their recyclability and/or reusability, varies from low to high, and the higher it is, the better. Ideal materials would be of 100% sustainability and/or 100% green manufacturability, but this is not always easily achievable. This Special Issue welcomes articles on topics such as:

  1. Selection criteria and evaluation of green material;
  2. Ecofriendly building and construction materials;
  3. Biodegradable plastics;
  4. Lifecycle of sustainable materials;
  5. Emerging technology and/concept for synthesizing green and functional materials; new technology or additives to prolong service life of a material;
  6. Simulation and finite element analysis of advanced materials for sustainable applications;
  7. Materials recycling and recovering from composites.

These topics are just guidelines, and hence, any papers related to green, ecofriendly, and sustainable material are welcome.

Prof. Dr. Kazem Abhary
Dr. Sherif Araby Gouda
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 submissions that pass pre-check are 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. Materials is an international peer-reviewed open access semimonthly 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 2600 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

  • sustainable materials
  • green manufacturing
  • green technology
  • recycling composites
  • advanced materials

Published Papers (2 papers)

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Research

17 pages, 6178 KiB  
Article
Direct Recycling of WC-Co Grinding Chip
by Alessio Pacini, Francesco Lupi, Andrea Rossi, Maurizia Seggiani and Michele Lanzetta
Materials 2023, 16(4), 1347; https://doi.org/10.3390/ma16041347 - 5 Feb 2023
Cited by 9 | Viewed by 2595
Abstract
Grinding is a finishing process for high precision, high surface quality parts, and hard materials, including tool fabrication and sharpening. The recycling of grinding scraps, which often contain rare and costly materials such as tungsten carbide (WC-Co), has been established for decades. However, [...] Read more.
Grinding is a finishing process for high precision, high surface quality parts, and hard materials, including tool fabrication and sharpening. The recycling of grinding scraps, which often contain rare and costly materials such as tungsten carbide (WC-Co), has been established for decades. However, there is a growing need for more energy-efficient and environmentally friendly recycling processes. Currently, grinding sludges, which are a mixture of abrasives, lubricants, and hard metal chips, are only treated through chemical recycling. Direct recycling (“reuse” of chips as raw material) is the most effective but not yet viable process due to the presence of contaminants. This paper presents an oil-free dry grinding process that produces high-quality chips (i.e., oil-free and with few contaminants, smaller than 60 mesh particle size) that can be directly recycled, as opposed to the oil-based wet grinding that generates sludges, which require indirect recycling. The proposed alternative recycling method is validated experimentally using WC-Co chips from a leading hard metals’ processing specialized company. The contaminant level (oxygen 0.8 wt.%, others < 0.4 wt.%), granulometry (chip D50 = 10.4 µm with grain size < 3 µm) and morphology of the recycled chips’ powder is comparable to commercial powders proving the research and industrial potential of direct recycling. The comparison of sintered products using recycled and commercial powder provided equivalent characteristics for hardness (HRA of 90.7, HV30 of 1430), porosity grade (A02-04) and grain size (<3 µm). Full article
(This article belongs to the Special Issue Green Manufacturing of Materials: Properties and Sustainability)
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23 pages, 4823 KiB  
Article
Experimental Study on the Properties of Mortar and Concrete Made with Tunnel Slag Machine-Made Sand
by Yu Tang, Weichao Qiu, Dunwen Liu, Wanmao Zhang and Ruiping Zhang
Materials 2022, 15(14), 4817; https://doi.org/10.3390/ma15144817 - 10 Jul 2022
Cited by 4 | Viewed by 1766
Abstract
Machine-made sand is gradually replacing natural sand to achieve sustainable development. Experimental studies and gray-correlation analysis were used to study the properties of tunnel slag machine-made mortar and concrete. The properties of machine-made mortar with different stone powder content were analyzed through experiments. [...] Read more.
Machine-made sand is gradually replacing natural sand to achieve sustainable development. Experimental studies and gray-correlation analysis were used to study the properties of tunnel slag machine-made mortar and concrete. The properties of machine-made mortar with different stone powder content were analyzed through experiments. By analyzing the performance of machine-made sand concrete with equal amounts of cement replaced by stone powder, the optimum replacement ratio is obtained. Gray-correlation analysis was used to compare the degree of influence of fineness modulus and stone powder content on the performance of concrete. Scanning electron microscopy (SEM) and X-ray diffractometry (XRD) were used to analyze the microstructure of tunnel slag sand concrete. The test results showed that the flexural and compressive strengths of the machine-made sand concrete were greater than the standard sand with the same stone powder content. The 28-day flexural and compressive strengths had a maximum difference of more than 30%. The best stone powder content of the machine-made mortar is in the range of 5% to 8%. When the replacement cement content of stone powder is about 6%, the mechanical and working properties of machine-made sand concrete achieve the optimal state. The lower the stone powder content, the closer the mechanical and working properties of machine-made sand concrete and river sand concrete. The correlation between the performance of machine-made sand concrete and fineness modulus is the largest. When the stone powder content is low, it has almost no effect on the compressive strength of concrete. The results point out the direction for the quality control of tunnel slag machine-made sand concrete. Full article
(This article belongs to the Special Issue Green Manufacturing of Materials: Properties and Sustainability)
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