Effect of oxygen on the wettability of 304L stainless steel by liquid Ag–Cu eutectic alloy

Kang, Youngjo; Han, Ji‐Hye; Kim, Hyelim

doi:10.1007/s10853-015-9511-1

Cited by 9 publications

(7 citation statements)

References 13 publications

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“…This is because the PCP has relatively low sintering activity and the PCP is more susceptible to oxidation than the ferrochrome powders, resulting in the degradation of wettability between TiC and steel matrix [19,20]. So the sample prepared with the PCP has the lowest hardness and TRS.…”

Section: Resultsmentioning

confidence: 99%

“…The overall performance of the samples is improved by using ferrochrome as chromium sources, in which the sample prepared with the MCFP has the highest hardness and TRS at sintering and tempering states. This is because the PCP has relatively low sintering activity and the PCP is more susceptible to oxidation than the ferrochrome powders, resulting in the degradation of wettability between TiC and steel matrix [19,20]. So the sample prepared with the PCP has the lowest hardness and TRS.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

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Effects of chromium sources on the microstructure and properties of TiC-steel composites

et al. 2018

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The composites of low alloy steel reinforced with TiC particles (36 wt-%) were prepared by conventional powder metallurgy process in this paper. The chromium in the steel matrix was provided by pure chromium powder (PCP), low carbon ferrochrome powder, medium carbon ferrochrome powder (MCFP) and high carbon ferrochrome powder. The SEM was used to observe the particle morphology and microstructure. Density, hardness and transverse rupture strength (TRS) of the samples were tested. The results show that the composite prepared with the PCP as a chromium source has low hardness and TRS and the composites prepared with different ferrochrome powders have higher hardness and TRS. The microstructures of the samples prepared with different chromium sources have some differences and provide the differences in mechanical properties and fracture morphology. The sample prepared with the MCFP as chromium source has the highest comprehensive performance after tempering: hardness 70 HRC and TRS 1752 MPa.

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Section: Resultsmentioning

confidence: 99%

Section: Mechanical Propertiesmentioning

confidence: 99%

Effects of chromium sources on the microstructure and properties of TiC-steel composites

et al. 2018

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“…Kang et al used an Ag–Cu eutectic alloy with varying oxygen content as braze to join parts of stainless steel 304L. They report that at certain mass fractions of oxygen in the braze the Cr 2 O 3 layer is destabilized, while wettability and brazing results increase . Another possibility presented by McGurran and Nicholas is a diffusion‐controlled undermining process of the oxide layer by the molten braze…”

Section: Introductionmentioning

confidence: 99%

“…They report that at certain mass fractions of oxygen in the braze the Cr 2 O 3 layer is destabilized, while wettability and brazing results increase. [6] Another possibility presented by McGurran and Nicholas is a diffusion-controlled undermining process of the oxide layer by the molten braze. [7] Finally, a mechanism has been discussed which relies on the reduction of the surface layer.…”

Section: Introductionmentioning

confidence: 99%

Surface Deoxidation Mechanism during Vacuum Heat Treatment of Stainless Steels AISI 304 and 446

Strauß

Wegewitz

Schöler

et al. 2020

steel research int.

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A process of removal of surface oxides from stainless steels AISI 304 and 446 that involves reduction by residual carbon, followed by the formation and desorption of carbon monoxide, is studied by investigation of thermal desorption with quadrupole mass spectrometry (QMS) and secondary ion mass spectrometry (SIMS). Carbon monoxide desorption is studied as a function of time and temperature by QMS, and carbon diffusion due to heat treatment is studied with SIMS—twice as much carbon monoxide desorbs from AISI 304 overall and desorption sets in at 900 °C as opposed to 1100 °C for AISI 446. In samples heated to 900 °C, carbon shows surface enrichment in AISI 304 but depletion in AISI 446.

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“…The contact angles of liquid sn on surface of pure iron were reported in the range of 30-60° in the temperature range between 673-1000 K [28][29]. wetting between different metallic solid/liquid systems was also studied in the literature [30][31][32]. Liquid sn and sn based alloys were used for wetting characteristics on various metallic substrates and the formation of various sn-intermetallic compounds were reported in [33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Varanasi,

Aldawoudi,

Baumli

et al. 2020

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NoN-wettiNg to wettiNg traNsitioN temperatures of Liquid tiN oN surfaces of differeNt steeL sampLes correspoNdiNg to their spoNtaNeous deoxidatioNThe goal of this paper is to measure the non-wetting to wetting transition temperatures of liquid tin on surfaces of different steel samples in vacuum with residual pressure of 10 -8 bar. The experiments were conducted on four steels (C45, s103, CK60 and EN1.4034) of varying compositions using pure tin (99.99%) by the sessile drop method. Non-wetting to wetting transition (contact angle decreasing below 90°) by liquid tin was observed as function of increasing temperature in the range of 820-940 K for low alloyed steels C45, s103 and CK60, while it was considerably higher (around 1130 K) for high chromium EN1.4034 steel. it is concluded that at about the same temperatures, the surfaces of the steel samples are spontaneously deoxidized due to the combined effect of high temperature, low vacuum and C-content of steels. After the oxide layer is removed, the contact angles of liquid tin on steel surfaces were found in the range of 45-80° for low alloyed C45, s103 and CK60 steels and around 20° for high chromium EN1.4034 steel. These relatively high contact angle values compared to other metal/metal couples (such as liquid Cu on steels) are due to the formation of not fully metallic intermetallic compounds (Fesn and Fesn 2 ) at the interface (such do not form in the Cu/Fe system).

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Effect of oxygen on the wettability of 304L stainless steel by liquid Ag–Cu eutectic alloy

Cited by 9 publications

References 13 publications

Effects of chromium sources on the microstructure and properties of TiC-steel composites

Effects of chromium sources on the microstructure and properties of TiC-steel composites

Surface Deoxidation Mechanism during Vacuum Heat Treatment of Stainless Steels AISI 304 and 446

Archives of Metallurgy and Materials

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