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Research Fellows Directory

Barbara Shollock

Dr Barbara Shollock

Research Fellow


Imperial College London

Research summary

Our ever-expanding opportunities to fly easily across the globe rely on aeroengine manufacturers to innovate continually to produce efficient, low emission and low noise turbines. The turbine blades that operate at the hottest part of the engine face the most severe challenges of any engineering component - temperatures approaching and sometimes exceeding their melting point, loads equivalent to a London bus hanging off the end and a highly aggressive atmosphere. Alloy and processing developments have led to these blades being produced as single crystal casting, resulting in complex parts with wall thickness on the order of 1 mm. Defects in production must be avoided to ensure components of high integrity. This project has been investigating the surface oxide defect known as 'surface scale' - how it forms, how to remove it in an environmentally friendly manner and how to reduce its influence on blade integrity. We have studied the scale and its stability and then explored thermal methods and laser cleaning to reduce or eliminate its effect on the processing of the final blade that will be put into the aeroengine.

Grants awarded

Surface Chemistry Changes during production of single crystal superalloy blades

Scheme: Industry Fellowship

Dates: Jun 2012 - Sep 2014

Value: £124,148

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