... at 0.389mA/cm². Molten solar salts NaNO₃ KNO₃ Potentiodynamic Nickel alloys VDM Alloy 625 The areas on the polarization curve with the most constant slope are known as the Tafel regions and are present on both the anodic and cathodic sections of the curve. The data...

... is discussed and compared to data reported in the literature. strake bands UNS N06625 Alloy 625 seawater crevice corrosion INTRODUCTION Four strake bands that fractured prematurely in service were evaluated to determine the failure mechanism. These strake bands were reported to have been fabricated from...

...Abstract Test results for four alloys in six different sour environments are presented. Alloys 625, 825, 316L and carbon steel were testing in sour gas with varying exposure to moisture at 280°C. Corrosion rates for each alloy over a 30 day period are measured from mass and thickness changes...

... injection flowline and a forged connector to a subsea manifold. The line had separated at the welded joint between the AISI 8630-Mod (8630M) low alloy steel connector and the ASTM A694/A694M-03¹ – Grade F65 (F65) C-Mn steel elbow, made using nickel alloy UNS N06625 (Alloy 625) welding consumables...

... of the bellows. Alloy N06626, alloy 625 (N06625) and alloy 800H (N08810) are the most common materials for metallic bellows in recent FCC units. Typical chemical compositions of these alloys are shown in Table 1 . ¹ Alloy N06626 is a modified type of alloy 625, with lower carbon content, very low...

... (1) Assistant Professor, Department of Mechanical Engineering. (2) Post-Doc Research Associate, Department of Coating & Polymeric Materials. (3) Assistant Professor, Department of Coating & Polymeric Materials. Abstract Alloy 625 possesses excellent corrosion properties, in room...

... in areas close to the CS-Alloy 625 interface. In this work, polarization, galvanic current and immersion tests were conducted to evaluate the effectiveness of inhibitors to mitigate galvanic corrosion and preferential weld corrosion of carbon steel coupled to Alloy 625 in CO₂-saturated brine...

...), which creates an ohmic potential drop within the pipe and minimizes the polarization of the dissimilar metals from their respective corrosion potentials. seawater piping corrosion galvanic corrosion mitigation titanium Alloy 625 copper-30 nickel INTRODUCTION The purposes of the testing described...

...,K]Cl, have been reported [ 1 - 6 ]. Abstract Metallurgical examinations were conducted on a set of damaged high alloy (Type 310H stainless steel and Alloy 625 weld overlay) superheater tubes removed from a coastal fluidized bed biomass power boiler, to better understand the degradation mode. Active...

... show that Mo segregation in weld overlays may be part of the circumferential cracking mechanism. After 18 months of service in a low NOx coal fired boiler, a field test on Alloy 33 weld overlay has demonstrated that it resists both corrosion and cracking. Alloy 33 Alloy 622 Alloy 625 Sulfidation...

..., chloride and oxygen content for the 22Cr steel and also examined 25Cr duplex and alloy 625. Duplex stainless steels alloy 625 chloride stress corrosion cracking concentration effect INTRODUCTION The Shearwater Development is located some 200 km east of Aberdeen in the Central Graben Area of the Central...

...Since the original Alloy 625 overlay was applied at the bottom of the boiler there has been a yearly progression of the wall thinning just above the Alloy 625 to carbon steel transition. Corrosion rates are highest within a few inches of the interface with values near 100 mpy (2.5 mm/y). Table 1...

.... This paper presents a case study conducted at the Great River Energy plant in Elk River, MN on corrosion management in three main areas. These areas include; corrosion in the high temperature superheat sections, protection of exposed carbon steel water wall tubes and management of Alloy 625 weld overlay...

...Abstract A test waterwall was fabricated so that alternatives to alloy 625 could be exposed in the first pass of the waste incineration plant Haderslev. The difference between application method was also a parameter, such that manual welding, machine welding and arc spray coating of alloy 625 were...

...Abstract The objective of this study is to characterize stress-corrosion cracking in the Ni-based alloys 625 and 617 during exposure to environments encountered in the batch supercritical water oxidation cycle. A fracture-mechanics approach was applied to quantify the stress-corrosion cracking...

... is described. fireside corrosion, erosion corrosion corrosion-fatigue waterwall coal-fired boilers low NO_x burner weld overlay overlay cladding soot blower water lance Type 309 alloy 625 alloy 622 In a coal-fired boiler, the furnace wall (often referred to as waterwall) is constructed...

.... Pertinent physical and mechanical property data are also reported to allow a complete evaluation of the weld overlay materials for this low NOx application. Sulfidation Oxidation Alloy 50 Alloy 33 Alloy 59 Alloy 625 boiler tube weld weld overlay low NOx fatigue cracking circumferential cracking...

... corrosion arising in the bonding part of SA178/weld metal and selective corrosion of the weld metal were less than conventional welding processes due to it’s lower dilution and heat input. weld overlay waste-to-energy plant superheater tube alloy 625 alloy 310 corrosion-resistant materials reverse...

..., titanium has been proved more corrosion resistant than Ni-base alloys also in the highly corrosive environment of the cooler of SCWO apparatuses. For the experiments, tube reactors made of alloy 625 equipped with liners made of titanium grade 2 in the preheater and the cooler sections were exposed...

...Alloy 50 alloy 625 corrosion behavior weld overlays waste incineration INTRODUCTION New technologies like the thermal treatment of municipal and hazardous waste, fluidized-bed combustion, coal gasification processes and the burning of heavy fuel in refineries, combined with demands for greater...