Development of High-Performance Enamel Coating on Grey Iron by Low-Temperature Sintering

Song, Dandan; Ren, Tongjun; Yang, Fei; Qiao, Yanxin; Sun, Jiapeng; Jiang, Jinghua; Ma, Aibin

doi:10.3390/ma11112183

Cited by 15 publications

(7 citation statements)

References 29 publications

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“…The reduction in the hardness and elastic modulus of Ni(1.0) can be attributed to the high plasticity and toughness of Ni nanoparticles, which enhanced the toughness of the enamel, thereby increasing the indentation depth. In addition, the incorporation of 1 wt.% Ni nanoparticles reduced the degree of crosslinking in the enamel network, which may also reduce the hardness and elastic modulus 1,30,32,33 …”

Section: Resultsmentioning

confidence: 99%

Improving the mechanical properties of enamel by nickel nanoparticle addition

Xue

Xie

et al. 2022

Int J Applied Ceramic Tech

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In order to improve the mechanical properties of enamel and prolong its service life, the effects of nickel particles on the microscopic morphology and mechanical properties of enamel were studied by XRD, FTIR, DSC, SEM, porosity analyses, nanoindentation, and bending experiments, and the following conclusions were drawn. When the addition amount of Ni nanoparticles added to enamel ranges from 1 to 5 wt.%, the mechanical impact resistance of enamel is improved compared with no addition. With the addition of 1 wt.% Ni nanoparticles, it enhanced the toughness of the enamel and the maximum bending strength of the enamel was achieved, which was 10% higher than that of the samples without Ni nanoparticles. Therefore, the addition of the optimal Ni nanoparticle content of 1 wt.% significantly improved the performance of enameled pressure vessels.The findings in this work are valuable for extending the life of enamel-coated pressure vessels and thus reducing accidents caused by them.

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Section: Resultsmentioning

confidence: 99%

Improving the mechanical properties of enamel by nickel nanoparticle addition

Xue

Xie

et al. 2022

Int J Applied Ceramic Tech

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“…The combined and uncombined carbon percentages play an important role in determining the suitability of cast iron substrates for enameling. In addition to that, the most used cast iron for enameling is gray cast iron, with a perlitic matrix and a graphitic structure [22,23].…”

Section: Cast Iron For Enamelingmentioning

confidence: 99%

“…Blasting helps to completely clean the surface of the casted objects from production contaminants. Its principal effect is to guarantee the formation of a homogeneous surface in terms of roughness and surface defects in order to ease the adhesion of the enamel layer to the substrate [23]. In addition to that, the blasting treatment opens the residual subsurface porosities, which could cause important defects to the enamel layer [29,30].…”

Section: Pretreatment Of Cast Iron Substratementioning

confidence: 99%

Porcelain Enamel Coatings

Russo

Rossi

Compagnoni³

2021

Encyclopedia

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Porcelain enamel is an inorganic-type coating, which is applied to metals or glass for both decorative and functional purposes. This coating is a silica-based solidified glass mass obtained by high-temperature firing (temperature can range between 450 and 1200 °C depending on the substrate). Porcelain enamel coatings differ from ceramic coatings mainly by their glass structure and dilatation coefficient, and from organic paints mainly by the inorganic nature of the matrix and the chemical bond that exists between the coating and the substrate.

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“…On the one hand, PM technology provides components with open porosity, which are easily damaged by external agents and can suffer corrosion, not just superficially but also internally. On the other hand, the surface porosity provides the roughness necessary for mechanical bonding of the enamel [55], in addition to the chemical bonding related to the adhesion agents it contains. Industrial steel components coated with this enamel are manufactured in two steps: casting and grinding of parts, followed by electrophoretic or sprayed coating and heating.…”

Section: Introductionmentioning

confidence: 99%

One-Step Enameling and Sintering of Low-Carbon Steels

Martínez

Abenójar

Bahrami

et al. 2021

Metals

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Powder technology allows manufacturing complex components with small tolerances, saving material without subsequent machining. There is a growing trend in using sintered steel components in the automotive industry. Within 2020, about 2544 million US dollars was invested for manufacturing sintered components. Not only does this industry uses steel components, but the gas cooker industry also uses steel in its burners since they are robust and usually demanded by Americans, with forecasts of 1097 million gas cookers in 2020. Steel gas burners have a ceramic coating on their surface, which means that the burner is manufactured in two stages (casting and enameling). This work aims to manufacture the gas burners by powder metallurgy, enameling and sintering processes in a single step. To achieve this aim, the ASC100.29 iron powder has been characterized (flow rate, relative density and morphology); subsequently, the most suitable parameters for its compaction and an adequate sintering temperature were studied. Single-step sintering and enameling was achieved by compacting iron powder at 500 MPa and sintering at 850 °C for 5 min. The necessary porosity for mechanical anchoring of the coating to the substrate is achieved at this sintering temperature. Bending resistance tests, scratching, degradation under high temperature and basic solution and scanning electron microscopy were used to characterize and validate the obtained samples.

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Development of High-Performance Enamel Coating on Grey Iron by Low-Temperature Sintering

Cited by 15 publications

References 29 publications

Improving the mechanical properties of enamel by nickel nanoparticle addition

Improving the mechanical properties of enamel by nickel nanoparticle addition

Porcelain Enamel Coatings

One-Step Enameling and Sintering of Low-Carbon Steels

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