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2019-01-01

Rajendran, Arvind

Preparative chromatography is an indispensable separation process in the food, pharmaceuticals and fine chemical industry. The aim of this work is to summarize developments in preparative chromatographic processes in the period 2009– 2012. Particular attention is paid to new developments in the...

2019-01-01

Herlach, D.M., Burggraf, S., Reinartz, M., Galenko, P.K., Rettenmayr, M., Gandin, Ch.-A., Henein, H., Mullis, A., Ilbagi, A., Valloton, J.

The dendrite growth velocity in Al75Ni25 melts has been measured in a containerless procedure as a function of undercooling using an electromagnetic levitation technique both in the Earth laboratory and in Space on board the International Space Station. The growth shows an anomalous behavior...

2019-01-01

Tan, Huanshu, Wooh, Sanghyuk, Butt, Hans-Jürgen, Zhang, Xuehua, Lohse, Detlef

The assembly of colloidal particles from evaporating suspension drops is seen as a versatile route for the fabrication of supraparticles for various applications. However, drop contact line pining leads to uncontrolled shapes of the emerging supraparticles, hindering this technique. Here we...

2018-01-01

Gomes, L.E., Spinelli, J.E., Bogno, A.-A., Gallerneault, M., Henein, H.

An experimental study is reported on heat treating rapid solidified Al-12 wt.% Si alloy with 355-425 m powder size. Fast heat treatments at 813K revealed morphological shifts of eutectic Si from the as-atomized condition to those after annealing. The Si network of the as-atomized samples showed...

2018-11-01

Huang, W., Luo, J., Henein, H., Jordan, J.

Purpose – This paper aims to evaluate the sulfide stress cracking (SSC) resistance of L80 casing steels with different alloying chemistries (e.g., Ti-B and Mn-Cr-Mo) by correlating the reduction in area ratio with the mechanical property, inclusion and carbide. Design/methodology/approach – SSC...

2018-01-01

Wiskel, J.B., Linchieh, A., Henein, H.

A series of infrared temperature videos were taken of the upper surface of hot rolled microalloyed steel skelp immediately following laminar cooling. In addition to validation of the skelp temperature and skelp cooling patterns, local temperature minimums were observed in the infrared images....

2018-06-01

Hearn, W., Bogno, A.-A., Spinelli, J.E., Valloton, J., Henein, H.

Hypo-eutectic Al-Si alloys are widely used in both the automotive and aerospace industries, however, they still have limited usage as structural materials, due to the inherent morphology of the Si phase that forms within the eutectic structure. This non-ideal Si morphology can be modified, via...

2018-01-01

Bogno, A.-A., Hearn, W., Spinelli, J.E., Valloton, J., Henein, H.

This paper reports on the development of Solidification Continuous Cooling Transformation diagrams that relate the solidification paths to the inherent microstructures of binary and ternary alloys. The methodology is based on the quantification of a solidified microstructure for its various phase...

2018-01-01

Valloton, J., Bogno, A.-A., Henein, H., Herlach, D.M., Sediako, D.

This paper reports on the undercooling and growth morphology of Al-4.5wt%Cu and Al-4.5wt%Cu-0.4wt%Sc with a focus on the effect of Sc addition. It is found that the addition of Sc reduces the undercoolings of both primary phase and eutectic. In addition, the morphology of the Al-4.5wt%Cu-0.4wt%Sc...

2018-01-01

Wiskel, J.B., Ma, J., Ivey, D.G., Henein, H.

Transverse tensile samples were extracted from the centreline position of three different compositions of uncoated thick walled microalloyed X70 UOE pipe at a location 180° from the weld. Aging heat treatments of 5, 15, and 25 minutes and temperatures of 175, 215, and 255°C were applied. Tensile...