Surface Tension at Elevated Temperatures. II. Effect of C, N, O and S on Liquid Iron Surface Tension and Interfacial Energy with Al<sub>2</sub>O<sub>3</sub>

Halden, F. A.; Kingery, W. D.

doi:10.1021/j150528a018

Cited by 197 publications

(20 citation statements)

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“…Oxygen partial pressure plays an important role on the wettability of a melt on a ceramic. Similarly, case studies on investigating the influence of oxygen partial pressure and oxygen content on the wettability of the copper‐oxygen‐alumina system have previously been undertaken . Oxygen‐promoted wetting of liquid copper to alumina has been completed by the copper‐cuprous oxide (Cu‐Cu 2 O) eutectic reaction under an oxygen partial pressure of 2 Pa without any external load.…”

Section: Resultsmentioning

confidence: 99%

“…Dense Al 2 O 3 /Cu‐O composites were fabricated by pressureless melt infiltration of a copper alloy containing 3.2 wt% oxygen into porous alumina preforms prepared by uniaxial pressing . The literature shows that the Cu‐melt infiltration process can be carried out in air, as opposed to traditional vacuum or inert atmospheres for certain applications.…”

Section: Resultsmentioning

confidence: 99%

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Cu/LaCrO₃joining by local melt infiltration through laser cladding

et al. 2018

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Direct bonding of copper and porous LaCrO3 without an extra filler interlayer was successfully completed using local and fast Cu‐infiltration through laser cladding. This significantly reduced the susceptibility of the ceramic to cracking. A high‐speed camera investigation into the wetting and infiltration behavior of a Cu‐melt into LaCrO3 with a porosity of ~63 vol% was performed. By adjusting the focal distance with a constant laser power of 300 W, the Cu‐melt was rapidly infiltrated into the ceramic preform in 10 seconds. This was completed under atmospheric air conditions, without added inert gas. The joining process developed can be used to fabricate ceramic/metal joints with targeted (micro‐) structure properties by adjusting the infiltrated melt and the infiltration depth, which would be suitable for many applications, such as multifunctional devices, solid oxide fuel cells or heating elements.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Cu/LaCrO₃joining by local melt infiltration through laser cladding

et al. 2018

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“…The outwards fluid flow pattern present in high purity metals and alloys produces wide and shallow welds, whereas the inwards fluid flow pattern observed in metals with surface active impurities results in deep and narrow weld beads . Surface tension of liquid iron reported small reductions when sulfur up to 0.01% was added; however, surface tension rapidly decreases with increasing sulfur beyond 0.01% . Adding 0.1% sulfur to pure iron at melting temperature reduces the surface tension by 550 dynes cm −1 .…”

Section: Experimental Validation Of the Methodsmentioning

confidence: 99%

“…23 Surface tension of liquid iron reported small reductions when sulfur up to 0.01% was added; however, surface tension rapidly decreases with increasing sulfur beyond 0.01%. 24 Adding 0.1% sulfur to pure iron at melting temperature reduces the surface tension by 550 dynes cm À1 . 25,26 Depending on the designation, the sulfur content in structural steels is limited to maximum contents in the range from 0.03 27 to 0.05%.…”

Section: E X P E R I M E N T a L V A L I D A T I O N O F T H E M E T mentioning

confidence: 99%

Underwater repair of fatigue cracks by gas tungsten arc welding process

Rodríguez-Sánchez

Perez-Guerrero

Liu

et al. 2014

Fatigue Fract Eng Mat Struct

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A fatigue crack repair method for offshore jacket tubular joints is presented. This method is applicable for fatigue cracks detected and sized by regular inspection techniques such as magnetic particle inspection up to a crack depth in the range of 5 mm. The main advantage of the method relies on its easy implementation allowing to be applied immediately after the crack is detected because equipment required is easy to transport and operate; so, it can be on board of a regular inspection campaign ship. A welding procedure specification has to be prepared and qualified prior to implementation of the repair method, considering particular parameters of the jacket fleet and selecting the welding equipment to be used. The proposed method could reinstall the original fatigue life in early stages of growth avoiding the need of more expensive procedures of repair such as joint clamping.

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“…A brief scan of the data available in literature Halden and Kingery, 1955;Semenchenko, 1961;Urbain, 1957, 1961;Urbain and Kozakevitch, 1961, etc. ), based on the Slag Atlas (1981) and including the Handbook on Property of Liquid Iron and Slag (1972), show that:…”

Section: Consequences On the Dynamic Behaviour Of Dropsmentioning

confidence: 99%