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Title of Journal: J Therm Spray Tech

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Abbravation: Journal of Thermal Spray Technology

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Springer US

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DOI

10.1016/0038-1098(83)90566-5

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1544-1016

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Electrical Properties of Thermally Sprayed Ni and

Authors: Maria Prudenziati Magdalena Lassinantti Gualtieri
Publish Date: 2008/07/04
Volume: 17, Issue: 3, Pages: 385-394
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Abstract

Five laboratories were asked to deposit Ni and Ni20Cr powders to obtain resistors we studied their electrical properties in the temperature range 20500 °C and interpreted the results in the light of their microstructure Resistors sprayed from Ni powders consist of NiO x “islands” embedded in a Ni matrix The temperature dependence of resistance TCR is in perfect agreement with that of pure Ni indicating that the matrix determines the electrical transport Annealing at temperatures from 200 to 400 °C results in an irreversible decrease of resistance A multiphase microstructure is observed in resistors prepared from 80Ni20Cr powders The major phase in these resistors is a NiCr alloy but with a NiCr ratio larger than 8020 Minor amounts of metal oxides are also detected The TCR in these samples spans from 180 ppm/°C to 2830 ppm/°C and is attributed to different degree of oxidation and segregation of the metals in the alloy

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  2. Compositionally Graded Thermal Barrier Coating by Hybrid Thermal Spraying Route and its Non-isothermal Oxidation Behavior
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  5. In Situ Monitoring of Particle Consolidation During Low Pressure Cold Spray by Ultrasonic Techniques
  6. High-Temperature Exposure Studies of HVOF-Sprayed Cr 3 C 2 -25(NiCr)/(WC-Co) Coating
  7. Review of Thermal Spray Coating Applications in the Steel Industry: Part 1—Hardware in Steel Making to the Continuous Annealing Process
  8. Sealing HVOF Thermally Sprayed WC-CoCr Coatings by Sol-Gel Methods
  9. Atmospheric Plasma Spraying of High Melting Temperature Complex Perovskites for TBC Application
  10. Double Rare-Earth Oxides Co-doped Strontium Zirconate as a New Thermal Barrier Coating Material
  11. Microstructure and Properties of Porous Abradable Alumina Coatings Flame-Sprayed with Semi-molten Particles
  12. Influence of the Spray Angle on the Properties of HVOF Sprayed WC–Co Coatings Using (−10 + 2 μm) Fine Powders
  13. Nonequilibrium Atmospheric Plasma Deposition
  14. Study of the Antibacterial Behavior of Wire Arc Sprayed Copper Coatings
  15. Rapid and Continuous Deposition of Porous Nanocrystalline SnO 2 Coating with Interpenetrating Pores for Gas Sensor Applications
  16. Effect of Spray Particle Velocity on Cavitation Erosion Resistance Characteristics of HVOF and HVAF Processed 86WC-10Co4Cr Hydro Turbine Coatings
  17. Phase Composition and Microstructural Responses of Graded Mullite/YSZ Coatings Under Water Vapor Environments
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  19. A One-Dimensional Flow Model with Adiabatic Friction for Rapid Estimation of Cold Spray Flow Conditions
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  21. High-Pressure Cold-Sprayed Ni and Ni-Cu Coatings: Improved Structures and Corrosion Properties
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