نتایج جستجو برای: copper composite

تعداد نتایج: 202928  

2001
S. Nami Kartal Carol A. Clausen

Composite manufacturing appears to be one of the most suitable recycling options for chromated copper arsenate (CCA)-treated waste wood. However, in many applications it would be beneficial to remove much or all of the CCA from the wood prior to composite production. This paper evaluates the effect of remediation processes, namely oxalic acid (OA) extraction and Bacillus licheniformis fermentat...

2008
S. Abdullah M. F. Abdullah A. K. Ariffin M. N. Baharin Z. A. Aziz

The new electrical conductive material, copper alloy, C194 in situ composite, has been developed for the application to leadframe, high field magnet and trolley wire. This material has a low cost, high thermal and electrical conductivity, easy fabrication and joining, and also has a wide range of attainable mechanical properties. In C194, copper is one of the core materials in producing leadfra...

2007
David F. Chao John M. Sankovic Brian J. Motil Nengli Zhang

Micro scale boiling behavior in the vicinity of graphite micro-fiber tips on the coppergraphite composite boiling surfaces is investigated. It is discovered that a large number of micro bubbles are formed first at the micro scratches and cavities on the copper matrix in pool boiling. In virtue of the non-wetting property of graphite, once the growing micro bubbles touch the graphite tips, the m...

2014
Charles B. Vick Rodney C. De Groot

Thirteen nonacidic waterborne preservatives were in­ vestigated for their compatibilitywith phenol-formaldehyde adhesive on aspen veneer treated with the preservatives to retentions of 0.2, 0.4, and 0.6 pcf. Of these preserva­ tives, didecyl dimethyl ammonium chloride (DDAC),DDAC with copper, DDAC with carbamate (DDACCA),sodium fluoride,and ammonium hydrogen difluoridedid not inter­ fere with a...

Journal: : 2021

The processes of melt formation were studied by methods optical and electron scanning microscopy. These occur during induction brazing a hard alloy to steel holder contact interaction low-melting (copper-zinc system alloy) refractory (iron-nickel) components the solders. It is shown that effect thermal magnetic-dynamic high-frequency electromagnetic field on composite solder how high-strength j...

Journal: :Journal of heat transfer 2022

Abstract An enabling advantage of carbon-based conductors is their low density and high thermal conductivity. To put this in the perspective applications, current rating copper nanocomposite different lengths are modeled. For comparison, required to raise maximum temperature studied 150 °C calculated with a joule heating model. The model validated an experimental setup equipped camera. It shown...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه مواد و انرژی - پژوهشکده سرامیک 1392

thermal barrier coatings (tbcs) are used to provide thermal insulation to the hot section components of gas turbines in order to enhance the operating temperature and turbine efficiency. hot corrosion and thermal shocks are the main destructive factors in tbcs which comes as a result of oxygen and molten salt diffusion into the coating. in this thesis atmospheric plasma spraying was used to dep...

Journal: :Tanzania journal of science 2021

The present study aimed to analyze the application of waste material from copper production– slag (ŻŻL) as filler for composites based on high-density polyethylene (HDPE). Copper was introduced in amounts 1–20 wt%, and its influence appearance (color analysis), chemical structure (Fourier-transform infrared (FTIR) spectroscopy), microstructure (optical microscopy), well static (tensile tests) d...

Journal: :Applied sciences 2023

Interatomic interaction potentials are compared using a molecular dynamics modeling method to choose the simplest, but most effective, model describe of copper nanoparticles and graphene flakes. Three considered: (1) bond-order potential; (2) hybrid embedded-atom-method Morse (3) potential. The is investigated for crumpled filled with determine possibility obtaining composite mechanical propert...

Journal: :Dalton transactions 2012
Jing Yang Le Xin Song Jun Yang Zheng Dang Jie Chen

The present study revealed a surprising valence transformation of copper (Cu) in the sintering process of mixtures of copper chloride dihydrate (CuCl(2)·2H(2)O) with β-cyclodextrin (β-CD) in ambient atmosphere. Such a transformation in Cu valence states can be modulated by changing the initial molar ratio (IMR) of CuCl(2)·2H(2)O to β-CD in the mixtures. Firstly, as the value of IMR decreased, t...

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