Thermal decomposition of silicon carbide in a plasma-sprayed Cu/SiC composite deposit

Kang, Hyung-Ku; Kang, Suk Bong

doi:10.1016/j.msea.2006.05.054

Cited by 87 publications

(46 citation statements)

References 22 publications

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“…2, proves that part of Si has dissolved in the Cu. Due to the phenomenon of contamination carbon linear distribution results should be treated approximately as a supplement to other results.The observed effect of silicon dissolution has been studied and reported in many papers [9][10][11][12]. Even such small disadvantageous changes at metal-ceramic boundary result in the decrease of global thermal conductivity, which is visible in case of coated SiC particles.…”

Section: Resultsmentioning

confidence: 99%

Investigations of Interface Properties in Copper-Silicon Carbide Composites

Chmielewski¹,

Pietrzak²,

Strojny-Nędza³

et al. 2017

Archives of Metallurgy and Materials

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This paper analyses the technological aspects of the interface formation in the copper-silicon carbide composite and its effect on the material's microstructure and properties. Cu-SiC composites with two different volume content of ceramic reinforcement were fabricated by hot pressing (HP) and spark plasma sintering (SPS) technique. In order to protect SiC surface from its decomposition, the powder was coated with a thin tungsten layer using plasma vapour deposition (PVD) method. Microstructural analyses provided by scanning electron microscopy revealed the significant differences at metal-ceramic interface. Adhesion force and fracture strength of the interface between SiC particles and copper matrix were measured. Thermal conductivity of composites was determined using laser flash method. The obtained results are discussed with reference to changes in the area of metal-ceramic boundary.

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Section: Resultsmentioning

confidence: 99%

Investigations of Interface Properties in Copper-Silicon Carbide Composites

Chmielewski¹,

Pietrzak²,

Strojny-Nędza³

et al. 2017

Archives of Metallurgy and Materials

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“…When the vapour phase of the matrix is deposited into the individual reinforcement elements of the component, by means of plasma spraying [42] or physical vapour deposition [43] or chemical deposition [43,44], then it is said to be the vapour state processing of the composites.…”

Section: Vapour State Processingmentioning

confidence: 99%

A review on machining of metal matrix composites using nanoparticle mixed dielectric in electro-discharge machining

Mohanty¹,

Routara²

2016

Int. J. Automot. Mech. Eng.

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The growth in the new advanced materials that are harder till date have led to the improvement of technologies used to machine them. Nowadays, new materials have been developed to be used in different sectors where lighter and harder materials are in vast requirement. Moreover, materials machined with high precision machine tools have to provide the greatest surface finish such that it catches the pace with other competitive materials. Research has shown that the electro-discharge machining (EDM) is the only machine tool that has created history in machining hard materials. In the recent years, metal matrix composites (MMCs) have an increasing demand in the industries since they are hard materials to machine and a good finish is required in the aerospace, marine, aircraft, nuclear and other similar industries. Thus, EDM has gained fame in machining MMCs. With due course, the powder mixed electro-discharge machining (PMEDM) has created efficient EDM, with the use of powders in the dielectric. The dielectric mixed EDM has been used for efficient material removal rate (MRR). With the change in technologies, the sizes of powders that have to be added in the dielectric fluid go on decreasing. In this review, studies by numerous researchers on the MMCs that are machined with the use of PMEDM are mentioned. The powders used in the experimentation are of nano size. Furthermore, the optimization technique used by the researchers is discussed in the present study.

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“…Interfacial degradation reactions may also occur between SiC particles and metal substrates during SiC-reinforced metal matrix composites production at high processing temperatures [3,4,5], Recently, various methods including metallic coatings of particles have been studied to enhance the wetting property between metals and ceramic materials [6], Among metallic coating methods, electroless coating has been reported as one ofthe most ideal techniques [7], Especially, electroless nickel and copper coatings are used to improve the wettability of reinforcement with in the matrix material and provide a good bond between matrix alloy and reinforcement [5], Electroless nickel coatings is an autocatalytic chemical reduction process which involves a reducing agent in solution to reduce metallic ions to the metal form [8], The most important advantages of electroless coating is uniform coating layer thickness compared to the electroplated nickel coatings [9], Typically, electroless nickel coating bath contains a source of nickel ions, reducing agent, complexing agent, stabilizer, buffering agent, wetting agent, and processes parameters including controlled temperature and pH. The processes are grouped as Ni-P, Ni-B and pure Ni, based on the various reducing agents used such as sodium hypophosphite (NaH2PC>2), sodium borohydride (NaBH4) and hydrazine (N2H4.H2O), respectively in the coating baths [10.11], In this study, two different source of Ni (nickel chloride and nickel sulphate) and reducing agents (sodium hypophosphate and sodium borohydride) are used in order to coat the SiC particles .The surface morphology and composition of the coatings are studied with the scanning electron microscopy (SEM) and energy dispersed X-ray analysis (EDX) respectively.…”

Section: Introductionmentioning

confidence: 99%