The Experts below are selected from a list of 7968 Experts worldwide ranked by ideXlab platform

Teoh Wei Ping - One of the best experts on this subject based on the ideXlab platform.

  • Blended waste oil as Alternative Binder for the production of environmental friendly roofing tiles
    Journal of Cleaner Production, 2020
    Co-Authors: Suubitaa Spencer Sam, Noor Zainab Habib, Ng Choon Aun, Chee Swee Yong, Mohammed J.k. Bashir, Teoh Wei Ping
    Abstract:

    Abstract Excessive emission of carbon dioxide and huge consumption of energy during the production of traditional building materials is a global issue needed to be concern by the society. The carbon dioxide released from the manufacturing process are one of the main contributors which lead to the deterioration of global warming. This study focused on the feasibility of using waste oils as blended Binder to produced environmental friendly roofing tiles. The blended Binder composed of waste engine oil and waste vegetable oil, woks together with sand aggregate and fly ash to produce an innovative building materials, namely WEV-Roofing tiles. A series of parameters including the composition of materials and manufacturing conditions were being optimized in order to determine the best formulation in the production of WEV-Roofing tiles. Basic requirements for standard roofing tiles, including flexural strength, water absorption and permeability tests were conducted to determine the mechanical properties of WEV-Roofing tiles, according to the American Society for Testing and Materials (ASTM C 67–07a, C 1167–03, and C 1492–03). Furthermore, the embodied carbon and embodied energy of the optimized tiles were found at 0.30 kgCO2/equivalent and 0.55 MJ/kg respectively, which is lower compared to the traditional building materials. The recycled and reused of waste materials to produce an environmental friendly roofing tiles is the main challenges of this research study.

Annika Borgenstam - One of the best experts on this subject based on the ideXlab platform.

  • evaluating magnetic properties of composites from model alloys application to Alternative Binder cemented carbides
    Scripta Materialia, 2019
    Co-Authors: Ziyong Hou, David Linder, Peter Hedström, Valter Ström, Erik Holmström, Annika Borgenstam
    Abstract:

    Abstract The magnetic properties of 85Ni-15Fe model alloys containing Co, W and C have been studied with the intent to isolate the influence of alloy chemistry on quality control measurements of Alternative Binder cemented carbides. The results show a strong influence of dissolved W on the Curie temperature and the saturation magnetization. The amount of dissolved C, and the presence of WC precipitates, on the other hand, is shown to have negligible effect. Furthermore, the magnetic coercivity is indicated to be entirely dominated by the microstructural features and quite insensitive to composition.

  • Evaluating magnetic properties of composites from model alloys – Application to Alternative Binder cemented carbides
    Scripta Materialia, 2019
    Co-Authors: Ziyong Hou, David Linder, Peter Hedström, Valter Ström, Erik Holmström, Annika Borgenstam
    Abstract:

    Abstract The magnetic properties of 85Ni-15Fe model alloys containing Co, W and C have been studied with the intent to isolate the influence of alloy chemistry on quality control measurements of Alternative Binder cemented carbides. The results show a strong influence of dissolved W on the Curie temperature and the saturation magnetization. The amount of dissolved C, and the presence of WC precipitates, on the other hand, is shown to have negligible effect. Furthermore, the magnetic coercivity is indicated to be entirely dominated by the microstructural features and quite insensitive to composition.

  • ICME guided property design : Room temperature hardness in cemented carbides
    Materials & Design, 2019
    Co-Authors: Martin Walbrühl, David Linder, John Ågren, Manon Bonvalet, Annika Borgenstam
    Abstract:

    Abstract The potential change in EU regulations may affect the traditional W-C-Co based cemented carbides industry and a methodology is required to accelerate the materials development with Alternative Binders. This work presents the ICME (Integrated Computational Materials Engineering) framework and the improved models that will enable tailor-made materials design of cemented carbides. The cemented carbide hardness is one of the key properties of the composites and here its close relation to the Binder composition is in focus. Modeling the influence of Alternative Binder materials on the hardness of cemented carbides offers a way to optimize the composite properties of prospective Binder candidates virtually, thereby reducing the development time and costs drastically compared to a classical trial-and-error method. The outline of a genetic algorithm is presented and the integration of the required models and tools, that are, or will become, available within this ICME framework, are presented.

  • Diffusion modeling in cemented carbides: Solubility assessment for Co, Fe and Ni Binder systems
    International Journal of Refractory Metals & Hard Materials, 2017
    Co-Authors: Martin Walbrühl, David Linder, John Ågren, Annika Borgenstam
    Abstract:

    Abstract The increasing interest in Alternative Binder solutions for WC based cemented carbide systems leads to more integration of ICME (Integrated Computational Materials Engineering) based concepts in the materials development. This work investigates the non-equilibrium W and C solubilities upon furnace-cooling in a wide range of Co and Fe-Ni based Binder systems by computational means. It is shown that the solubilities strongly depend on the C-activity and Binder matrix elements, revealing that Ni dissolves most W and Fe most C out of the investigated systems. Furthermore, the effect of the Binder mean free path and the cooling rates on the solubilities was investigated. The presented method and results provide insights to control the Binder chemistry and will help to design the properties for future Binder systems in a fast and efficient way.

Yong Chee Swee - One of the best experts on this subject based on the ideXlab platform.

  • catalyzed waste engine oil as Alternative Binder of roofing tiles chemical analysis and optimization of parameters
    Journal of Cleaner Production, 2018
    Co-Authors: Wei Ping Teoh, Zainab Habib Noor, Yong Chee Swee
    Abstract:

    Abstract Global warming is one of the global major issues owing to excessive emission of greenhouse gases (GHGs). Construction industry accounts for about 40% of the total emissions and conventional building materials are believed to be the major contributors. This paper attributes to the potential of manufacturing environmental friendly building material namely EnO-Roofing tiles by utilizing only catalyzed waste engine oil (WEO) as a Binder together with coal-fired ash (CFA). It was discovered that waste engine oil under specific temperature and condition would induce its chemical transformation from liquid to solid state via complex oxy-polymerization reaction. The functional groups of waste oil which initiated the chemical reactions and led to the stiffening of tiles were analyzed by using Fourier Transform Infrared Spectroscopy (FTIR). In addition, a series of manufacturing processes were carried out to determine the optimized condition for the production of catalyzed EnO-Roofing tiles. Standard specification tests for EnO-roofing tiles were conducted in terms of flexural strength, water absorption and permeability as per requirement of American Society for Testing and Materials (ASTM C 67–07a, C 1167–03, and C 1492–03). Moreover, the embodied carbon (EC) and embodied energy (EE) of the novel tiles were found at 0.4178 kgCO2/kg and 1.27 MJ/kg respectively, which is relatively lower with respect to the conventional roofing tiles. Conclusively, conversion of existing resources, recycled and reused waste materials, manufacture of environmental friendly roofing tiles are the prominent outcome of this paper.

Susanne Norgren - One of the best experts on this subject based on the ideXlab platform.

  • Abrasive wear of hardmetals with a Binder phase forming deformation induced martensite
    2019
    Co-Authors: Lisa Toller-nordström, Mark Gee, Anders Holmberg, Ken Mingard, Lilja Mirjam, Susanne Norgren
    Abstract:

    Hardmetals with Alternative Binder phases with compositions tailored for specific applications may be used to achieve improved performance of tools. In this paper an iron based Binder phase that ha ...

  • On gradient formation in Alternative Binder cemented carbides
    International Journal of Refractory Metals and Hard Materials, 2018
    Co-Authors: Susanne Norgren, José Garcia
    Abstract:

    Abstract In this work ICME (Integrated Computational Materials Engineering) has been applied to help understanding gradient formation in today's state-of-the-art cutting tool inserts. The approach was used to carefully design the experimental setup to learn about the controlling mechanisms on gradient formation in Co/Ni/Fe Binder systems. The model considers activities, phase fractions and solubilities of diffusing elements in the liquid in these multicomponent systems. It was observed that the gradient thickness is the same for Ti-W-C-N-Co and Ti-W-C-N-Ni at 1410 °C - despite the higher solubility of Ti in liquid Ni compared to Co. This was also true for more complex Ti-Ta-Nb-W-C-N-Co and Ti-Ta-Nb-W-C-N- Fe-Ni at 1410 °C in this study. At 1450 °C the gradient thickness increases for all Binders, showing a large increase in the gradient thickness. The thickest gradient was observed for X = Ni in the Ti-W-C-N-X system and thinest for X = Fe Binder despite similar N and C activity differences. The Ti-Ta-Nb-W-C-N- Ni-Fe (85Ni-15Fe) had a thicker gradient compared to the Ti-Ta-Nb-W-C-N-C-Co system.

  • Investigation of cemented carbides with Alternative Binders after CVD coating
    International Journal of Refractory Metals and Hard Materials, 2017
    Co-Authors: Lisa Toller, Chunxin Liu, Erik Holmström, Tommy Larsson, Susanne Norgren
    Abstract:

    Due to health concerns surrounding the use of cobalt as a Binder for tungsten carbide in cemented carbides there is a drive to find an Alternative Binder. Although there are many publications on ce ...

Suubitaa Spencer Sam - One of the best experts on this subject based on the ideXlab platform.

  • Blended waste oil as Alternative Binder for the production of environmental friendly roofing tiles
    Journal of Cleaner Production, 2020
    Co-Authors: Suubitaa Spencer Sam, Noor Zainab Habib, Ng Choon Aun, Chee Swee Yong, Mohammed J.k. Bashir, Teoh Wei Ping
    Abstract:

    Abstract Excessive emission of carbon dioxide and huge consumption of energy during the production of traditional building materials is a global issue needed to be concern by the society. The carbon dioxide released from the manufacturing process are one of the main contributors which lead to the deterioration of global warming. This study focused on the feasibility of using waste oils as blended Binder to produced environmental friendly roofing tiles. The blended Binder composed of waste engine oil and waste vegetable oil, woks together with sand aggregate and fly ash to produce an innovative building materials, namely WEV-Roofing tiles. A series of parameters including the composition of materials and manufacturing conditions were being optimized in order to determine the best formulation in the production of WEV-Roofing tiles. Basic requirements for standard roofing tiles, including flexural strength, water absorption and permeability tests were conducted to determine the mechanical properties of WEV-Roofing tiles, according to the American Society for Testing and Materials (ASTM C 67–07a, C 1167–03, and C 1492–03). Furthermore, the embodied carbon and embodied energy of the optimized tiles were found at 0.30 kgCO2/equivalent and 0.55 MJ/kg respectively, which is lower compared to the traditional building materials. The recycled and reused of waste materials to produce an environmental friendly roofing tiles is the main challenges of this research study.