SHS powders for thermal spray applications

Bartuli, Cecilia; Shtessel, É. A.

doi:10.1016/0272-8842(95)00141-7

Cited by 22 publications

(10 citation statements)

References 4 publications

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“…Together with low energy requirements and short reaction times, SHS was, in fact, shown to produce IMC powder with excellent bonding between the reinforcements and the matrix components, as a result of the in situ formation of these phases at high-temperature [23]. Thus, powders produced by SHS are attractive for thermal spray coatings [17][18][19]23].…”

Section: Introductionmentioning

confidence: 98%

“…For what concerns the synthesis of IMCs, SHS [18,23] was proven to have significant advantages if compared with other techniques typically employed for this purpose, such as reactive hot pressing [29], mechanical alloying [14,30] and laser cladding [10]. Together with low energy requirements and short reaction times, SHS was, in fact, shown to produce IMC powder with excellent bonding between the reinforcements and the matrix components, as a result of the in situ formation of these phases at high-temperature [23].…”

Section: Introductionmentioning

confidence: 99%

“…Some of the advantages of SHS, with respect to many traditional solid state synthetic routes, are the high purity of the products, short process times (typically on the order of few second or less), and the low energy consumption (limited to the ignition step), as well as low cost of the experimental apparatus [21,22]. SHS has been successfully used in the last 30 years for the production of several materials including ceramics, intermetallics, and composites [22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

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Self-propagating high-temperature synthesis of ZrB2 or TiB2 reinforced Ni–Al composite powder

Çamurlu

Maglia

2009

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Self-propagating high-temperature synthesis of ZrB2 or TiB2 reinforced Ni–Al composite powder

Çamurlu

Maglia

2009

Journal of Alloys and Compounds

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“…The obtained composites coatings consist of TiC phase dispersed within a metal matrix formed by the NiCr alloy (Bartuli & Smith, 1996). In other applications, the MoSi 2 compound prepared by SHS is used to form a protective layer resistant to corrosion at high temperatures, such as casting nozzles in the glass industry (Bartuli et al, 1997;Gras, 2000).…”

Section: Self-propagating High-temperature Synthesis (Shs)mentioning

confidence: 99%

The Influence of Dry Particle Coating Parameters on Thermal Coatings Properties

Cuenca-Álvarez¹,

Monterrubio-Badillo²,

Juárez-López³

et al. 2012

Advanced Plasma Spray Applications

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“…It was conditioned by the high exothermal effect of TiC formation (giving full scope for the choice of binder material acting as diluents in the synthesis process) and good coating properties (comparable with or even better than that of conventionally used WC/Co and Cr3C2/NiCr coatings). The chemical and morphological features of different SHS powders were described, and their technical characteristics of flowability and sprayability were outlined [30][31][32][33][34][35][36][37][38] . Wear performance and hardness test results for various TS coatings were also repor ted 21-23, 25,26, 30-39, 42,43).…”

Section: Introductionmentioning

confidence: 99%

SHS Powders for Thermal Spray Coating

Talako

Ilyuschenko

Лецко

2009

KONA

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2009 Hosokawa Powder Technology Foundation IntroductionModern industrial technologies call for the development of novel materials with improved properties, lower costs and environmentally suitable processes. Surface engineering that attempts to create functional layers on the surface is obviously the most economical way to provide high per formance to machiner y and equipment. Among the wide range of available methods (including varieties of atomistic and par ticulate deposition, bulk coatings wetting processes and surface modification), thermal spray coatings offer the most versatile solutions. Thermal spray processes form a continuous coating by melting the consumable material (feedstock) to form droplets and impinging these droplets on the substrate. The mechanism of bonding to the substrate in thermal sprayings (TS) is the same as plating, both mechanical interlocking and atomic interaction, with the shear strength around 7 MPa 1). The thickness of the coatings can range from 10 µm to a few millimeters 2) . Other advantages of thermal spraying include a practically unlimited assortment of powders to be sprayed, high efficiency and relatively low substrate temperature (373-583 K), thus minimizing shape distortion, oxidation and phase transformations in the near-surface layer. Demanded characteristics for thermal spray feedstock powders can be very different, depending on the spraying process, the operating conditions, the desired properties of the final coating, etc. Besides the intrinsic material properties, the technical requirements for the TS feedstock powders include good flowability and sprayability. They are greatly affected by the particle size, shape and morphology as well as particle size distribution. That is why thermal spray feedstock powder production processes must be reliable and flexible, while remaining as inexpensive as possible.Self-propagating high-temperature synthesis (SHS) or combustion synthesis, discovered by A.G. Merzhanov and colleagues in 1967, is known as a ver y promising technique for processing materials (ceramics, intermetallics, cermets, etc.) with good physical and chemical properties at relatively low costs 3,4) . The main point of the process is that after localized initiation, the reaction propagates as a narrow zonecombustion wave -along a sample driven by the exothermic reaction between components of the charge mixture without the application of external heating (furnaces, etc.). Because of the extreme conditions in the SHS wave (high temperature of up to 3500 , fast heating of up to 10 6 K/s, steep temperature gradient of up to 10 5 K/cm, rapid cooling in the after-burn zone of up to 100 K/s, and fast accomplishment of reaction, 0.5 s to 1 min), chemical interaction mechanisms during the SHS are often non-equilibrium, resulting in the formation of materials with improved structure and properties, especially in multi-component composite systems [3][4][5][6] . Moreover, a product with increased purity can be obtained due to evaporation of volatile impurities at th...

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SHS powders for thermal spray applications

Cited by 22 publications

References 4 publications

Self-propagating high-temperature synthesis of ZrB2 or TiB2 reinforced Ni–Al composite powder

Self-propagating high-temperature synthesis of ZrB2 or TiB2 reinforced Ni–Al composite powder

The Influence of Dry Particle Coating Parameters on Thermal Coatings Properties

SHS Powders for Thermal Spray Coating

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