Boronized pistons for die casting

Lyakhovich, L. S.; Bragilevskaya, S. S.

doi:10.1007/bf00652851

Cited by 4 publications

(2 citation statements)

References 1 publication

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“…A single-phase structure is desirable. [6] Fe 2 B is preferred to deboriding of the saturated layer, [6] (2) the addition of copper to the borided layer, [6] (3) multicomponent diffusion impreg- nation of iron with elements like silicon, aluminium, etc., along with boron, [25] (4) superplastic boronizing, which produces a nonacicular structure with eqiaxed grains of the borides, thereby reducing brittleness, [26] and (5) laser surface B. Thermal Treatment modification of borided surfaces.…”

Section: Introductionmentioning

confidence: 99%

Interrupted boriding of medium-carbon steels

Gopalakrishnan

Ramakrishnan

Shankar

et al. 2002

Metall Mater Trans A

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The results of an extensive study on the microstructure, microhardness, corrosion, and tensile properties of continuously borided and interrupted borided specimens of medium-carbon steel are compared. Carbon repartitioning away from the surface is one of the principal modes to accommodate the high strains introduced on boron diffusion into the case. However, this is a kinetically constrained process and is more predominant on interrupted boriding. The effect of such a carbon redistribution is to result in microstructural modifications including (1) blunting of boride needle tips, (2) precipitation of nearly spherical and fine borocarbides, and (3) enhanced carbon segregation at the boride needle/ steel matrix interface on interrupted boriding. The mechanisms aiding the change in the morphology of the boride needles are discussed. The improvements in the mechanical and corrosion properties of the interrupted borided specimens over continuously borided specimens are described.

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Section: Introductionmentioning

confidence: 99%

Interrupted boriding of medium-carbon steels

Gopalakrishnan

Ramakrishnan

Shankar

et al. 2002

Metall Mater Trans A

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“…Research work [3][4][5][6][7][8][9] found that the boronizing became a conventional surface treatment such as nitriding and carburizing and it is currently applied in many branches of industry and shows advantageous properties such as high resistance to adhesive and abrasive, and provides good resistance to most acids. Although many researchers have investigated boron including properties and performance of boron coating at room temperature, the influence of a boron on high temperature oxidation resistance of a metal and alloy substrate in terms of kinetics mechanisms is still limited [10,11].…”

Section: Introductionmentioning

confidence: 99%

Effect of Boronizing on the Oxidation Resistance of 316L Stainless Steel

2017

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The effect of boronizing treatment on oxidation at high temperature on 316L stainless steel was studied at 850, 900, 950, and 1000• C in air, for holding times between 0.25 and 24 h. The oxidation resistance of unboronized and boronized specimens was studied isothermally by thermogravimetric analyzer. The oxidation rate constant represented as a parabolic rate constant Kp was evaluated. Optical microscopy, X-ray diffraction, and the scanning electron microscopy were used for surface characterizations. The experimental results show that boronized coating increases the resistance of stainless steel 316l about twice and prevents oxygen from penetrating into the stainless steel substrate at the temperatures between 850 and 1000• C.

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Molten salts in metal treating: Present uses and future trends

Galopin

Daniel

1975

Electrodeposition and Surface Treatment

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Boronized pistons for die casting

Cited by 4 publications

References 1 publication

Interrupted boriding of medium-carbon steels

Interrupted boriding of medium-carbon steels

Effect of Boronizing on the Oxidation Resistance of 316L Stainless Steel

Molten salts in metal treating: Present uses and future trends

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