Postdoc in Corrosion Reliability of Electrical Contacts

DTU Mekanik
fredag 09 mar 18

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Frist 25. marts 2018
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The Materials and Surface Engineering section in the Department of Mechanical Engineering at the Technical University of Denmark are seeking candidate for 1 Postdoc position in the field of “Corrosion reliability of electrical contacts” focusing on understanding the material combinations and failure mechanisms in Au based contacts used today, and the development of new contact system material combinations.

The proposed Postdoc position is part of the research activities in the project High performance electrical contacts (HiPEC) funded by Innovations Fund, Denmark.

Project background and content
Present electrical contacts systems are based on heavy use of costly gold. The layers are typically made of a substrate with a layer of nickel followed by a layer of gold with thickness depending on the application and exposure conditions. Main issues with the electrical contacts are the corrosion and wear, which limits the freedom to reduce the gold thickness. Only two solutions can be foreseen to solve this problem: (i) use of a corrosion resistance passive layer underneath of the gold instead of nickel so that the corrosion is reduced in case of wear and (ii) use a non-electrochemically active top layer with matching resistivity level to gold.   

Responsibilities and tasks
This post-doc project focus on understanding the corrosion reliability issues of the presently used gold based contacts and new contact materials in detail including the failure mechanisms connected to corrosion, fretting, and contact resistance. Focus will be on to understand the problems with materials combinations including substrate material and coating as well as the electrical contact loss due to fretting corrosion.

Candidates for the position should have a PhD degree in Materials and corrosion or expertise in tribocorrosion and material characterization expertise, or related topics. Prior experience on corrosion reliability of electronics or knowledge on electrical contact systems is an advantage. Combination of knowledge in electronics, materials, and reliability is also preferred.

We offer
DTU is a leading technical university globally recognized for the excellence of its research, education, innovation and scientific advice. We offer a rewarding and challenging job in an international environment. We strive for academic excellence in an environment characterized by collegial respect and an academic freedom tempered by responsibility.

Salary and terms of employment
The appointment will be based on the collective agreement with the Danish Confederation of Professional Associations. The allowance will be agreed with the relevant union.

The postdoc position is for 2 years and expected to start from 1 June 2018. 

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Further information
Further information may be obtained from Professor Rajan Ambat , Department of Mechanical Engineering, DTU. Phone: +45 4525 2181, e-mail:  

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Application procedure
Please submit your online application no later than 25 March 2018 (local time). Applications must be submitted as one PDF file containing all materials to be given consideration. To apply, please open the link "Apply online", fill in the online application form, and attach all your materials in English in one PDF file. The file must include: 

  • Application (cover letter)
  • CV
  • Diploma (MSc/PhD)
  • List of publications

Applications and enclosures received after the deadline will not be considered.

All interested candidates irrespective of age, gender, disability, race, religion or ethnic background are encouraged to apply.

DTU Mechanical Engineering covers the fundamental engineering disciplines within Solid mechanics, Fluid mechanics, Coastal and Maritime Engineering, Energy systems and energy conversion, Materials and Surface Engineering, Manufacturing Engineering, Engineering design and Product development. The department has a scientific staff of about 135 persons, 100 PhD students and a technical/administrative support staff of about 85 persons.

DTU is a technical university providing internationally leading research, education, innovation and scientific advice. Our staff of 5,800 advance science and technology to create innovative solutions that meet the demands of society; and our 11,000 students are being educated to address the technological challenges of the future. DTU is an independent academic university collaborating globally with business, industry, government, and public agencies.