Thermally sprayed Ni(Cr)–TiB2 coatings using powder produced by self-propagating high temperature synthesis: microstructure and abrasive wear behaviour

Horlock, A.J.; McCartney, D.G.; Shipway, P.H.; Wood, J. V.

doi:10.1016/s0921-5093(01)01918-9

Cited by 57 publications

(24 citation statements)

References 23 publications

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“…(1) is easier to occur thermodynamically than Eqs. (2)(3)(4). In addition, it shows that Ni and TiB 2 are the thermodynamically stable phases in the products.…”

Section: Thermodynamic Calculationmentioning

confidence: 91%

“…One of the most notable characteristics of SHS reaction of that system is the high exothermicity, which is because of the large formation heat release of TiB 2 ( H TiB 2 = −324 kJ/mol) [1][2][3]. The high exothermicity resulting from the formation of TiB 2 benefits the process of SHS reaction, however, it can also cause some problems.…”

Section: Introductionmentioning

confidence: 99%

“…Horlock et al [3] deposited Ni (Cr)-TiB 2 cermet coatings onto steel substrates from a feedstock powder produced via the SHS reaction from Ni (Cr), Ti and B powders. The SHS reacted powder was found to comprise principally 1-5 m sized TiB 2 in a crystalline, Ni-based solid solution matrix, with approximately 60 vol% TiB 2 and 40 vol% metallic binder.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of Ni content on the products of Ni–Ti–B system via self-propagating high-temperature synthesis reaction

Huang

Wang

et al. 2008

Journal of Alloys and Compounds

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“…(1) is easier to occur thermodynamically than Eqs. (2)(3)(4). In addition, it shows that Ni and TiB 2 are the thermodynamically stable phases in the products.…”

Section: Thermodynamic Calculationmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Ni content on the products of Ni–Ti–B system via self-propagating high-temperature synthesis reaction

Huang

Wang

et al. 2008

Journal of Alloys and Compounds

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“…Wear properties of TiB 2 -containing cermet coatings have been addressed e.g., in refs. [42,43]. HVOF spraying of Ni(Cr)-65 wt.% TiB 2 and Fe(Cr)-70 wt.% TiB 2 powders resulted in TiB 2 -containing coatings that were found to perform better in abrasive wear with alumina than conventional Cr 3 C 2 -NiCr deposits.…”

Section: Wear Resistant Cermetsmentioning

confidence: 99%

“…The size of the TiB 2 particles within the cermet was found to depend critically on the initial composition; large particles were favored by low binder fractions and the presence of the excess boron. The presence of the larger boride particles was concluded to impart the wear resistance of these coatings in abrasion by alumina or silica abrades [43].…”

Section: Wear Resistant Cermetsmentioning

confidence: 99%

Optimization and Characterization of High Velocity Oxy-fuel Sprayed Coatings: Techniques, Materials, and Applications

et al. 2011

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Abstract:In this work High Velocity Oxy-fuel (HVOF) thermal spray techniques, spraying process optimization, and characterization of coatings are reviewed. Different variants of the technology are described and the main differences in spray conditions in terms of particle kinetics and thermal energy are rationalized. Methods and tools for controlling the spray process are presented as well as their use in optimizing the coating process. It will be shown how the differences from the starting powder to the final coating formation affect the coating microstructure and performance. Typical properties of HVOF sprayed coatings and coating performance is described. Also development of testing methods used for the evaluation of coating properties and current status of standardization is presented. Short discussion of typical applications is done.

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Corrosion behavior of HVOF sprayed coatings of NiTiC and Ni(Ti,W)C SHS produced composite powders and Ni + TiC mixed powder

Karbasi

Ghavidel

Nekahi

2012

Materials & Corrosion

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In this research, the corrosion behavior of different types of (Ni-TiC) coatings produced by high velocity oxy-fuel (HVOF) technique was studied. Ni-TiC and Ni-(Ti,W)C composite powders were produced by self-propagation high temperature synthesis (SHS). These powders as feedstock were thermally sprayed on steel substrates in comparison with a conventional powder mixture of Ni þ TiC. The microstructures of the produced coatings were characterized using SEM micrographs. The presence of different phases in the microstructure was investigated using EDS analysis and XRD patterns. Also, the behavior of the coatings against a corrosive media was studied using Tafel polarization tests. The results show that the Ni-TiC and Ni(W-Ti)C coatings exhibited better corrosion resistance than conventional Ni þ TiC mixture coating due to the increment of the homogeneity of the structure and the decrement of the porosity level. In addition, the presence of W in the microstructure of Ni(W-Ti)C coating provided the least pitting and highest general corrosion.

show abstract

Thermally sprayed Ni(Cr)–TiB2 coatings using powder produced by self-propagating high temperature synthesis: microstructure and abrasive wear behaviour

Cited by 57 publications

References 23 publications

Effect of Ni content on the products of Ni–Ti–B system via self-propagating high-temperature synthesis reaction

Effect of Ni content on the products of Ni–Ti–B system via self-propagating high-temperature synthesis reaction

Optimization and Characterization of High Velocity Oxy-fuel Sprayed Coatings: Techniques, Materials, and Applications

Corrosion behavior of HVOF sprayed coatings of NiTiC and Ni(Ti,W)C SHS produced composite powders and Ni + TiC mixed powder

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