ProgramMaster Logo
Conference Tools for 2017 TMS Annual Meeting & Exhibition
Register as a New User
Submit An Abstract
Propose A Symposium
Presenter/Author Tools
Organizer/Editor Tools
About this Abstract
Meeting 2017 TMS Annual Meeting & Exhibition
Symposium 2017 Technical Division Young Professional Poster Competition
Presentation Title YP-2: Isothermal and Non-isothermal Studies of Pt-Rh Thermocouple Failure Caused by Two Phosphorus Diffusion Mechanisms
Author(s) Anna Nakano, Jinichiro Nakano, James Bennett
On-Site Speaker (Planned) Anna Nakano
Abstract Scope Certain gases bearing elements such as arsenic, silicon, and sulfur, are known to cause Pt-Rh alloy degradation that leads to thermocouple failure at elevated temperatures. The detrimental effects of phosphorous, another element found in carbon feedstock, ores, and refractory bricks used in metallurgical and gasification processes, is, however, not well reported. In this work, gaseous phosphorous interactions with Pt-Rhx (x = 0–30 wt.%) alloys were studied isothermally and non-isothermally at various oxygen partial pressures. The analysis indicated material degradation was initiated by a combination of the Pt-Rh liquidus lowering and the formation of an intermediate phase at grain boundaries or gas/solid interfaces through two distinct phosphorous interdiffusion routes, critically depending on the amount of Rh in platinum. Based on the experimental result, a new partial isothermal section of the Pt-Rh-P system is proposed; along with unique transient degradation mechanisms of P in the Pt-Rh thermocouple alloys.
Proceedings Inclusion? Undecided


YP-10: Effect of Neutron Irradiation on Friction Stir Processed ODS Alloys (MA956 and MA754)
YP-11: In Situ Ion Irradiation of Multilayer (TiN, TiAlN) Ceramic Coating for Accident Tolerant Zr-alloy Fuel Claddings
YP-12: Study of Magneto-optical Characteristics of Cerium Substituted Yttrium Iron Garnet Thin Films on Quartz Substrates
YP-1: Influence of Dissolved Oxygen Content on the Oxidation Behavior of Ni-based Alloys in High Temperature Water Vapor
YP-2: Isothermal and Non-isothermal Studies of Pt-Rh Thermocouple Failure Caused by Two Phosphorus Diffusion Mechanisms
YP-3: Effect of Hot Extrusion on Mechanical and Corrosion Properties of a MgCaSr Alloy
YP-4: Increased Shear Deformation through Friction Stir Back Extrusion of Mg AZ31B: Textural Evolution and Its Relationship to Mechanical Properties
YP-5 A Study of Brittle Fracture Mechanism of Non-quenched and Tempered N80 Tubing Used in Gas and Oil Well
YP-6: Commercial-ready Large Scale Manufacturing of Light-weight Aluminum Metal Matrix Composite
YP-7: Octo-Strain: A Novel Multiaxial Loading Device for In-situ Stress Measurements through Neutron Diffraction
YP-8: The Materials Science behind Ice Cream Making
YP-9: Body-centered Phase of Shock Loaded Single Crystal Copper

Questions about ProgramMaster? Contact