Characterization of Nanostructured WC-Co Deposited by Cold Spraying

Li, Chang-Jiu; Gao, Peihu; Ma, Jian; Wang, Yuyue

doi:10.1007/s11666-007-9096-6

Cited by 94 publications

(47 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Critical velocity depends on the feedstock material and substrate, but is typically 700-1000 m/s [87]. NC metals that have been successfully processed using cold spray include Al alloys [10,88,89], Ni [90],TiO 2 [91] and WC-Co [92].…”

Section: Deposition Techniquesmentioning

confidence: 99%

A Review of Fatigue Behavior in Nanocrystalline Metals

2009

View full text Add to dashboard Cite

Nanocrystalline metals have been shown to exhibit unique mechanical behavior, including break-down in Hall-Petch behavior, suppression of dislocation-mediated plasticity, induction of grain boundary sliding, and induction of mechanical grain coarsening. Early research on the fatigue behavior of nanocrystalline metals shows evidence of improved fatigue resistance compared to traditional microcrystalline metals. In this review, experimental and modeling observations are used to evaluate aspects of cyclic plasticity, microstructural stability, crack initiation processes, and crack propagation processes. In cyclic plasticity studies to date, nanocrystalline metals have exhibited strongly rate-dependent cyclic hardening, suggesting the importance of diffusive deformation mechanisms such as grain-boundary sliding. The cyclic deformation processes have also been shown to cause substantial mechanicallyinduced grain coarsening reminiscent of coarsening observed during large-strain monotonic deformation of nanocrystalline metals. The crack-initiation process in nanocrystalline metals has been associated with both subsurface internal defects and surface extrusions, although it is unclear how these extrusions form when the grain size is below the scale necessary for persistent slip band formation. Finally, as expected, nanocrystalline metals have very little resistance to crack propagation due to limited plasticity and the lack of crack path tortuosity among other factors. Nevertheless, like bulk metallic glasses, nanocrystalline metals exhibit both ductile fatigue striations and metal-like Paris-law behavior. The review provides both a comprehensive critical survey of existing literature and a summary of key areas for further investigation.

show abstract

Section: Deposition Techniquesmentioning

confidence: 99%

A Review of Fatigue Behavior in Nanocrystalline Metals

2009

View full text Add to dashboard Cite

show abstract

“…With the development of cold spraying, it becomes possible to eliminate completely the decarburization of carbides through decompositions and dissolution because solid spray particles in a much low temperature are employed to deposit the coating (Ref [13][14][15][16][17][18][19][20]. However, the limited deformation of both impacting hard cermet particles and the underlying cermet coating makes it difficult for the hard coating to continuously build up on impact in cold spraying using a conventional dense thermal spray powder.…”

Section: Introductionmentioning

confidence: 99%

Influence of Powder Porous Structure on the Deposition Behavior of Cold-Sprayed WC-12Co Coatings

Gao

2008

J Therm Spray Tech

Self Cite

View full text Add to dashboard Cite

The limited deformation of hard cermet particles and impacted coating makes it difficult for conventional thermal spray powders to continuously build up on impact in cold spraying. In this study, three nanostructured WC-12Co powders with different porous structure and apparent hardness were employed to deposit WC-Co coatings on stainless steel substrate by cold spraying. The deposition characteristics of three powders of porosity from 44 to 5% were investigated. It was found that WC-Co coating is easily built-up using porous powders with WC particles bonded loosely and a low hardness. The microhardness of WC-12Co coatings varied from 400 to 1790 Hv with powders and spray conditions, which depends on the densification effects by impacting particles. With porous WC-Co powders, the fracture of particles on impact may occur and low deposition efficiency during cold spraying. The successful building up of coating at high deposition efficiency depends on the design of powder porous structure.

show abstract

“…This method is used to produce the nanocomposite coating, which has metallic matrix, such as Cu [54,55], Al [56,57], Co [58], or alloy matrix [59][60][61], and its nanofillers are nitrite, carbide, boride, diamond, CNT, or others [54][55][56][57][58][59][60][61]. To fabricate the nanocomposite powders for this cold spray method, the mechanical alloying (MA) should be used with metallic matrix powders and other nanoparticles.…”

Section: Cold Spray Methodmentioning

confidence: 99%

“…For inorganic matrix, such as metal matrix or alloy matrix, these nanocomposite coatings could be prepared by various methods, including chemical vapor deposition (CVD) (see Figure 3), powder metallurgy, physical vapor deposition (PVD) [41][42][43][44][45], thermal plasma spray [46][47][48], sol-gel [49][50][51][52] (see Figure 1), epitaxial growth [53], cold spray [54][55][56][57][58][59][60][61] (see Figure 2), and electrodeposition [62][63][64][65][66][67]. Metal matrix composite coatings that dispersed a second phase [68,69] have attracted extensive attention owing to unique properties such as oxidation and corrosion resistance [69,70], wear resistance [71,72], and magnetic properties [72].…”

Section: Materials For Matrixmentioning

confidence: 99%

“…For inorganic nanofillers, the types of nanoparticles are carbides [58], nitrites [59][60][61][73][74][75][76][77], borides [55], oxides [4,5,62,65], metallic particles [17,78], clay [4,5,35], CNT [54], and nanodiamond [56,79]. For organic nanoparticles (organic nanofiller), the most used nanoparticles were PTFE [80][81][82], PEO [83], PANi [31], or nanocellulose and cellulose nanocrystal [18,40].…”

Section: Materials For Nanofillersmentioning

confidence: 99%

See 1 more Smart Citation

Nanocomposite Coatings: Preparation, Characterization, Properties, and Applications

Nguyen-Tri

Nguyen

Carriere

et al. 2018

International Journal of Corrosion

176

View full text Add to dashboard Cite

Incorporation of nanofillers into the organic coatings might enhance their barrier performance, by decreasing the porosity and zigzagging the diffusion path for deleterious species. Thus, the coatings containing nanofillers are expected to have significant barrier properties for corrosion protection and reduce the trend for the coating to blister or delaminate. On the other hand, high hardness could be obtained for metallic coatings by producing the hard nanocrystalline phases within a metallic matrix. This article presents a review on recent development of nanocomposite coatings, providing an overview of nanocomposite coatings in various aspects dealing with the classification, preparative method, the nanocomposite coating properties, and characterization methods. It covers potential applications in areas such as the anticorrosion, antiwear, superhydrophobic area, self-cleaning, antifouling/antibacterial area, and electronics. Finally, conclusion and future trends will be also reported.

show abstract

Characterization of Nanostructured WC-Co Deposited by Cold Spraying

Cited by 94 publications

References 44 publications

A Review of Fatigue Behavior in Nanocrystalline Metals

A Review of Fatigue Behavior in Nanocrystalline Metals

Influence of Powder Porous Structure on the Deposition Behavior of Cold-Sprayed WC-12Co Coatings

Nanocomposite Coatings: Preparation, Characterization, Properties, and Applications

Contact Info

Product

Resources

About