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Crystallization and phase transformation behaviour of electroless nickel-phosphorus deposits with low and medium phosphorus contents under continuous heating

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Keywords
  • Electroless Nickel-Phosphorus Deposits With 5-8 Wt% P And 3-5 Wt% P Were Analysed For The Effects Of
  • The As-Deposited Coatings Consist Of A Mixture Of Amorphous And Microcrystalline Nickel Phases
  • Featuring In Their X-Ray Diffraction Patterns
  • Continuous Heating Processes To 300C-800C At 20C/Min Were Carried Out On The Deposits In A Different
  • The Subsequent X-Ray Diffraction Analyses Show That The Sequence Of Phase Transformation Process Was
  • F
  • C
  • C
  • Nickel + Ni3P Stable Phases
  • Preferred Orientation Of Nickel {200} Plane Developed In The Deposits After The Heating Processes
  • Differential Scanning Calorimetry Of The Deposits Indicates That The Crystallization Temperatures In
  • And Increasing Heating Rate
  • Crystallization Activation Energies Of The Deposits (230 And 322 Kj/Mol
  • Respectively) Were Calculated Using The Peak Temperatures Of Crystallization Process
  • From The Differential Scanning Calorimetric Curves At The Heating Rates Ranging From 5 To 50C/Min
  • It Was Found That The Deposit With Lower Phosphorus Content Has Higher Activation Energy
Disciplines
  • Economics

Abstract

LET US TAKE YOU HIGHER INTERNATIONAL PROSPECTUS I chose to study Pharmacy at Queen’s because of its excellent reputation and high ranking status in the UK. I was attracted to study at the University by the impressive Lanyon Building campus – which has a great heritage and is a stunning landmark – and also by the low cost of living in Northern Ireland, which is much cheaper than the rest of the UK. I am having a lot of fun studying at Queen’s. The lecturers and tutors are very friendly and approachable. There are five other students from Asia in my class, and this mix of nationalities and local students provides an excellent opportunity to improve my English- speaking skills. For video clips of Queen’s and to hear what our students have to say, go to www.youtube.com/come2queens Name: Teck Kiong Wong From: Malaysia Studying: Pharmacy, second year (INTO Progression student) INTERNATIONAL PROSPECTUS 2014 | Queen’s University Belfast 2 CHOOSE QUEEN’S We have 17,000 students from over 80 countries, 3,500 staff and 100,000 graduates worldwide. We are a leading research-intensive university in the UK with a heritage dating back over 150 years. A Russell Group university: one of the UK’s leading research-intensive universities Ranked 26 in the UK, “Queen’s enjoys a reputation as Ireland’s Oxbridge” (Sunday Times University Guide 2013) Ranked in the top 1% of universities in the world (QS World University Rankings 2013) Ranked 12th in the UK for student satisfaction (National Student Survey 2013) Ranked 17 in the UK for graduate employment, 83% of Queen’s students are in graduate-level jobs “immediately on leaving” (Sunday Times University Guide 2013) Five consecutive Times Higher Education Awards (2008–2012), including Entrepreneurial University of the Year 2009 Lowest cost of living in the UK (Mercer.com 2012) Safest region in the UK (British Crime Survey 2011) FOR FURTHER INFORMATION | www.qub.ac.uk 3 Students make the difference

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