Effects of Cu content and mechanical alloying parameters on the preparation of W–Cu composite coatings on copper substrate
TL;DR: In this article, a planetary ball mill was used to deposit tungsten-copper composite coatings on pure copper surface using a high-energy mechanical alloying (MA) method.
About: This article is published in Journal of Alloys and Compounds.The article was published on 2014-02-05. It has received 35 citations till now. The article focuses on the topics: Ball mill & Composite number.
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TL;DR: In this article, NiCrAlCoY-Al gradient composite coatings were successfully fabricated on Ti-6Al-4V alloy substrate via high-energy mechanical alloying method.
43 citations
TL;DR: In this article, the W70Cu30(W-30 wt.% Cu) alloys were fabricated using cold pressing and infiltration sintering methods from two types of powders, i.e., mixed copper-tungsten (M-Cu-W) and newly developed copper-coated tungsten composite (Cu@W) powders.
40 citations
Cites methods from "Effects of Cu content and mechanica..."
...Vari ous new methods have been proposed to synthesis WCu powders, such as hydrothe rmal synthesis, co-reduction method [18], mechanical alloying [19, 20], chemical o-deposition, and hydrogen reduction [21]....
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TL;DR: In this article, the effects of Zr alloying on interface properties are discussed in terms of electronic structures to provide a deeper understanding, and the calculated results are in excellent agreement with experimental observations in the literature.
30 citations
TL;DR: In this article, a nanocrystalline Mg 55 Cu 40 Ni 5 alloy has been synthesized from the elemental powders by mechanical alloying (MA), and microstructural evolution, morphological changes and thermal behaviour of the mechanically alloyed powders at different stages of milling have been examined by a combination of differential scanning calorimetry (DSC), scanning electron microscopy with energy-dispersive X-ray detection ((SEM/EDX), Xray diffraction (XRD) and transmission electron microscope (TEM).
29 citations
TL;DR: In this article, nano-structured Ni-Al2O3 composite coatings were applied to an aluminum plate by means of a planetary ball mill and the results showed that initial charges with Ni:Al 2O3 weight ratios of 4:1 and greater yielded well-compact coatings.
21 citations
References
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01 Jul 2004-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, a surface mechanical attrition treatment (SMAT) was developed for synthesizing a nanostructured surface layer on metallic materials in order to upgrade the overall properties and performance.
Abstract: In terms of the grain refinement mechanism induced by plastic straining, a novel surface mechanical attrition treatment (SMAT) was developed for synthesizing a nanostructured surface layer on metallic materials in order to upgrade the overall properties and performance. In this paper, the SMAT technique and the microstructure of the SMAT surface layer will be described. The grain refinement mechanism of the surface layer during the SMAT will be analyzed in terms of the microstructure observations in several typical materials. Obvious enhancements in mechanical properties and tribological properties of the nanostructured surface layer in different materials were observed. Further development and prospects will be addressed with respect to the SMAT as well as the performance and technological applications of the engineering materials with the nanostructured surface layer.
910 citations
TL;DR: A grain refinement mechanism induced by plastic deformation during the SMA treatment in Fe was proposed in this article, which involves formation of dense dislocation walls (DDWs) and dislocation tangles (DTs) in original grains and in the refined cells under further straining.
889 citations
31 May 2001-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, the basic mechanisms of formation of metastable phases (specifically supersaturated solid solutions and amorphous phases) by the technique of MA and these aspects are compared with those of RSP.
Abstract: Mechanical alloying (MA) is a powder metallurgy processing technique involving cold welding, fracturing, and rewelding of powder particles in a high-energy ball mill, and has now become an established commercial technique to produce oxide dispersion strengthened (ODS) nickel- and iron-based materials. MA is also capable of synthesizing a variety of metastable phases, and in this respect, the capabilities of MA are similar to those of another important non-equilibrium processing technique, viz., rapid solidification processing (RSP). However, the “science” of MA is being investigated only during the past 10 years or so. The technique of mechanochemistry, on the other hand, has had a long history and the materials produced in this way have found a number of technological applications, e.g., in areas such as hydrogen storage materials, heaters, gas absorbers, fertilizers, catalysts, cosmetics, and waste management. The present paper discusses the basic mechanisms of formation of metastable phases (specifically supersaturated solid solutions and amorphous phases) by the technique of MA and these aspects are compared with those of RSP. Additionally, the variety of technological applications of mechanically alloyed products are highlighted.
536 citations
TL;DR: In this article, two different mechanisms for plastic strain-induced grain refinement in pure Cu were identified, corresponding to different levels of strain rate, and the minimum size of refined grains via this process is about 100 nm.
446 citations
TL;DR: In this paper, the effects of average current density, frequency and duty cycle on the surface morphology, crystal size, preferred orientation of the deposits and the amount of embedded nano-TiO2 particles in composite coatings were investigated.
208 citations