AMPP Store - Products tagged with 'oxidation'

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Laser Cleaning For Surface Preparation For Pre-Weld And Pre-Bonding Applications

Product Number: 51322-18182-SG

Author: Tyler O’Neill

Publication Date: 2022

$20.00

Laser cleaning has been an effective tool in manufacturing and industrial applications for over 20 years. Cleaning, as well as cutting and welding, has shown vast improvements in repeatability and precision with the use of laser technology [4]. Previous bonding techniques such as mechanical fixturing and welding can be inconsistent and cause issues like increased structural weight, decreased structural integrity, galvanic corrosion, and many more potential failures [5]. Laser cleaning may propose a viable option for adhering materials to reduce weight and increase repeatability. Welding practices continue to develop to reduce both weld thickness and porosity. Porosity in welds is typically caused from failure to prepare the surface adequately [1]. Failures in both welding applications and adhesive bonding applications can be reduced with the use of laser technology.

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NACE SP0716-2016, Soluble Salt Testing Frequency and Locations on Previously Coated Surfaces

Product Number: 21409-SG

Publication Date: 2016

$179.00

HISTORICAL DOCUMENT. Test for the presence of surface soluble salts before application of a coating system. Previously coated or eplacement substrates only. Does not include allowable limits of soluble salts.

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New Thermal Management Raw Materials Platform Gives Flexibility to Develop Next Generation Thermal Insulation Coatings (TIC) with Improved Performance

Product Number: 51324-20913-SG

Author: Gary Fisher

Publication Date: 2024

$40.00

Coating industry trends has driven increased use and interest to develop more efficient and durable thermal insulative coatings. The key areas for this expansion are to reduce corrosion under insulation, increase occupational safety and reduce energy loss. Key features of these water-based coatings are low thermal conductivity, high hydrophobicity and adhesion along with an emerging interest to have greater heat resistance and stability. This paper will introduce a new water-based silicone hybrid resin to accompany the two novel microporous composite granules; one with high thermal insulative efficiency and the other, a pure hydrophobic synthetic silica pearl shaped filler to optimize thermal insulation efficiency as well as offering mechanical stability and reduced cracking in these highly filled coatings. The new platform offers the formulator options to leverage all new technologies together or separately when a compatible binder is needed to increase thermal heat stability and flame-retardant performance. Coatings and formulating details will be highlighted with thermal degradation of binders, surface temperature comparison for “Safe Touch” coatings, thermal conductivity (Lambda - mW/mK), contact angle measurements along with fire retardance test and direct flame testing using various thermal insulation fillers.

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Novel Composite Overlay for High Temperature Corrosive/Wear Applications

Product Number: 51324-20925-SG

Author: Gary Fisher

Publication Date: 2024

$40.00

Synergistic erosion and corrosion at elevated temperatures is a prevalent condition in oil refining and power generation. Corrosion resistant alloys do not tend to be durable under wear conditions, whilst common wear-resistant solutions such as tungsten carbide-based coatings display poor resistance to oxidation and corrosion. This work details the development of a composite overlay, deposited by plasma transferred arc welding, that has been designed to exhibit high levels of wear protection coupled with resistance to oxidizing and carburizing environments. The performance of the composite is provided by the corrosion resistance of a MCrAlX-type alloy, which acts as a matrix for a homogenous distribution of chromium-based carbides. The protective oxide promoted by the matrix alloy, combined with a dense population of in-situ formed primary carbides act synergistically to provide resistance to high temperature corrosive/wear environments. The presentation details the alloy selection and development of the deposition process. The performance of the composite is assessed under abrasive wear, oxidizing and carburizing conditions, and gauged against commonly used corrosion resistant alloys.

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Oxidation and Hydrogen Embrittlement Behavior of Several Additively Manufactured Ni-Based Superalloys

Product Number: 51324-21117-SG

Author: Lucas Teeter; Martin Detrois; Kyle Rozman; Chantal K. Sudbrack

Publication Date: 2024

$40.00

The environmental degradation of additively manufactured Ni-based superalloys (INCONEL® 625 (IN625), Haynes® 282® (H282), and INCONEL® 718 (IN718)), fabricated by laser powder-bed fusion (L-PBF) and fully heat-treated, is being screened for hydrogen service in industrial gas turbines. Oxidation experiments in air, on printed and machined surface conditions at 750 °C for 164, 500, and 2,010 hours revealed thicker oxides for printed conditions for IN625 and H282 and thicker oxides for machined conditions for IN718. The chromium oxide that developed was thickest for H282 and showed higher incorporation of Ni/Fe-based oxides for the as-printed surfaces. Ex-situ hydrogen embrittlement was evaluated by electrochemically charging flat test bars for 72hours in 0.1 M H2SO4 + 1 g/L CH4N2S then slow strain rate tensile testing (0.0039 mm/min) at room temperature. All experienced reduction in strain failure of that lead to a hydrogen embrittlement index of 16%, 18%, and 30% for IN625, H282, and IN718, respectively. Oxidation kinetics showed the highest to smallest oxidation rate: H282, IN625, and IN718. The oxidation rates were higher on the as-printed surfaces for H282 and IN625 but lower for IN718. Topographical imaging of the fracture surfaces showed a 30-100 µm deep embrittlement zone at the surface developed during hydrogen charging, but no significant differences between charged and as-received specimens in the center where ductile dimpling behavior is dominate.

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Oxidation Of Welded Materials In High Temperature Supercritical Carbon Dioxide

Product Number: 51321-16961-SG

Author: Florent Bocher

Publication Date: 2021

$20.00

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Reformer Pigtail Degradation Over 49 Years’ Service: A Case Study

Product Number: MECC23-20234-SG

Author: Ratnakar Kadikar, Abdulrahman Alrumaidh

Publication Date: 2023

$20.00

In Jan 2023, during reformer shutdown; one of the reformer inspections revealed cracks at hot collector and pigtail. Most of the cracks were on the surface and some of the cracks were through. Pigtail sample was removed, and it was taken for failure investigation to confirm the failure root cause.

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Technical Paper: Petroleum-Based Corrosion Inhibitor

Product Number: 41206-268-SG

Author: James R. Mott

Publication Date: 2006

$20.00

The effects of corrosion are wide-spread and widely known. From construction to transportation and everything in between corrosion is a result of environmental effects on the metals we use to build. Corrosion may be controlled, however, through the use of inhibitors as an on-going treatment in order to effectively stall the act of corrosion.

Understanding the Effect of Water Chemistry and Surface Grinding on the Stress Corrosion Cracking Initiation of Filler Metal 82

Product Number: ED22-17143-SG

Author: N.SUPORNPAIBUL, M.G. BURKE, J. DUFF, F. SCENINI, Y.WANG

Publication Date: 2022

$20.00

SCC of Ni-base filler metal (FM) 82 has been reported in the nozzles and other components in Light Water Reactors (LWRs). The typical characteristics of stress corrosion cracking (SCC) of Ni-base alloys are a long incubation time followed by slow propagation, which can suddenly transition to fast propagation. Whilst there has been considerable effort expended to develop an SCC mechanism that can explain and predict SCC in Alloy 600, fewer studies have investigated SCC of FM 82. The Preferential Intergranular Oxidation (PIO) SCC mechanism of Alloy 600 proposed by Bertali et al. which is an evolution of the Selective Internal Oxidation SCC mechanism proposed by Scott and Le Calvar is considered one of the most representative primary water SCC mechanisms for Alloy 600.

Products tagged with 'oxidation'

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