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Corrosion evaluation

VFO works well in gas turbines. In a nine-month test program, the combustion properties of VFO were studied in a combustion test module. A gas turbine was also operated on VFO. The tests were conducted to study the combustion characteristics of VFO, the erosive and corrosive effects of VFO, and the operation of a gas turbine on VFO. The combustion tests were conducted on a combustion test module built from a GE Frame 5 combustion can and liner. The gas turbine tests were conducted on a Ford model 707 industrial gas turbine. Both the combustion module and gas turbine were used in the erosion and corrosion evaluation. The combustion tests showed the VFO to match natural gas in flame patterns, temperature profile, and flame color. The operation of the gas turbine revealed that the gas turbine not only operated well on VFO, but its performance was improved. The turbine inlet temperature was lower at a given output with VFO than with either natural gas or diesel fuel. This phenomenon is due to the increase in exhaust mass flow provided by the addition of steam in the diesel for the vaporization process. Following the tests, a thorough inspection was made of materials in the combustion module and on the gas turbine, which came into contact with the vaporized fuel or with the combustion gas. The inspection revealed no harmful effects on any of the components due to the use of VFO. [Pg.451]

Diegel, R. B. and Kelley, K.. Comparative Corrosion Evaluation of Zinc-based and Aluminium Metallized Coatings, Texasgulf (now Falconbridge), Toronto (1981)... [Pg.431]

Skin irritation or corrosivity evaluation or in vitro tests... [Pg.12]

This book consists of nine chapters. The second chapter provides an overview of the important thermodynamic and kinetic parameters of relevance to corrosion electrochemistry. This foundation is used in the third chapter to focus on what might be viewed as an aberration from normal dissolution kinetics, passivity. This aberration, or peculiar condition as Faraday called it, is critical to the use of stainless steels, aluminum alloys, and all of the so-called corrosion resistant alloys (CRAs). The spatially discrete failure of passivity leads to localized corrosion, one of the most insidious and expensive forms of environmental attack. Chapter 4 explores the use of the electrical nature of corrosion reactions to model the interface as an electrical circuit, allowing measurement methods originating in electrical engineering to be applied to nondestructive corrosion evaluation and... [Pg.6]

Computers and programs are also important in corrosion monitoring systems, such as an automated constant rate extension system (A Cert) shown schematically in Figure 5.5. This system may be used for conducting corrosion and cracking evaluation tests. The system is capable of initiation and conducting tests as well as data acquisition and analysis. There is very little human intervention and the system is capable of corrosion evaluation in environments which are difficult to simulate. This system is a... [Pg.325]

Corrosion Evaluation of Epoxy-coated Metallic-clad and Solid Metallic Reinforcing Bars in Concrete, US Department of Transportation, Federal Highway Administration, Publication FHWA-RD-98-153, December 1998. [Pg.536]

Two types of corrosion evaluation tests, SO2 and Prohesion salt spray tests, were employed for the evaluation of corrosion protection characteristics of painted plasma systems. The SO2 salt spray test was chosen to speed up differentiation of the corrosion protection properties of the different systems investigated. The Prohesion... [Pg.673]

The major factor for the accelerated corrosion of CB supports and Pt catalysts is found when the temperature is higher than 220 °C and the potential is higher than 0.9 V versus RHE [61], respectively. It is essential to evaluate the stability as well as the activity under such accelerated corrosion evaluation conditions. [Pg.858]

Table 2a Primary data (n) of salt spry test cabinet corrosivity evaluation in eight experiments as corrosion rate (v, mg/m2) of RS (average mass m=31225 mg) mass loss (Am, mg) from their geometric surface area (S, mm2) (first four experiments)... Table 2a Primary data (n) of salt spry test cabinet corrosivity evaluation in eight experiments as corrosion rate (v, mg/m2) of RS (average mass m=31225 mg) mass loss (Am, mg) from their geometric surface area (S, mm2) (first four experiments)...
Many types of nondestructive, leak, corrosion evaluation and mechanical tests may be used to establish and verify quality requirements of the materials specification. In addition, identification markings enable materials to be checked for specification conformance. Field identification methods must be used when all else has failed, but their limitations must be understood. [Pg.121]

Sensitized material that fails corrosion evaluation testing may perform perfectly well in service. The highly oxidizing... [Pg.137]

Figure 6-9. Corrosion evaluation is a quality control tool that specific alloys are provided to the end user or fabricator in their optimum corrosion resistant condition. Figure 6-9. Corrosion evaluation is a quality control tool that specific alloys are provided to the end user or fabricator in their optimum corrosion resistant condition.
Specifying corrosion evaluation tests may lead to significant delay in delivery of material. Suppliers do not normally include such tests as a prerequisite to releasing materials because the majority of the market does not require this form of testing. Now that dual marked stainless steels predominate the market, the requirement for corrosion evaluation should be questioned, except for certain nickel-chromium alloys. [Pg.138]

Materials evaluation in pilot plants covers all phases of the coal gasification process. Test specimens are installed in the coal pretreatment, gasification, gas quench systems, and methanation equipment in the plants. Three exposures, nominally 1, 3, and 6 months, at plant operating conditions are scheduled for each test location. Post-exposure corrosion evaluation employed in Phase II are the same as those used in other phases of the IITRI program, i.e., metallography combined with gravimetric analysis. [Pg.404]

When compared to other techniques for corrosion evaluation, EIS has several advantages ... [Pg.518]

Any system Small corrosion area or general corrosion over large area Localized corrosion Evaluate structural integrity. If fit for service, then apply coating to protect metal and inspect according to schedule Identify root cause of corrosion. Remove materials causing corrosion. Replace damaged material... [Pg.274]

Powers, R. and Kessler, R. 1987. Corrosion Evaluation of Substructure, Long Key Bridge, Corrosion Report No. 87-9A, FL Department of Transportation, Gainesville, Florida. [Pg.798]

Equation (5.36) is used to calculate the corrosion rate of a system without knowledge of electrode-kinetic parameters. This approximation may not always result in accurate corrosion estimates. However, this equation provides a basis for rapid corrosion evaluation studies. [Pg.191]

Case Study 7.1—Corrosion Evaluation of Crevice Exposed to Differential Acidity in the Absence of Chlorides or Other Dissolved Oxidizers... [Pg.313]

Electrochemical Techniques for Corrosion Evaluation of Reinforcement in Concrete... [Pg.525]

ELECTROCHEMICAL TECHNIQUES FOR CORROSION EVALUATION OF REINFORCEMENT IN CONCRETE... [Pg.529]

Daoming Sun is a chief technology officer at the Suzhou LiCeram Electronic Technology Co., Ltd (www.liceram.cn). He earned his PhD in physical electronics from Fudan University and holds a bachelor s degree in materials science and engineering from Xi an University of Technology, China. His research focuses on the development of materials for electrochemical environmental sensors. Dr. Sun worked as a team leader at LiCeram, and he has successfully developed a novel high-sensitive sensor series that detects the time of wetness and corrosion current for the corrosion evaluation of metal. [Pg.352]

In this chapter the procedures used for preparing the racks and coupons, for immersion and corrosion evaluation (after exposure) of the coupons of rack 2, for pool water chemistry determinations, for periodic inspections and for determination of radiation levels near the racks are described. Rack 2 contained eight aluminium alloy coupons and two stainless steel coupons. [Pg.163]


See other pages where Corrosion evaluation is mentioned: [Pg.239]    [Pg.112]    [Pg.112]    [Pg.137]    [Pg.137]    [Pg.138]    [Pg.182]    [Pg.290]    [Pg.293]    [Pg.314]    [Pg.781]    [Pg.783]    [Pg.222]    [Pg.30]    [Pg.31]    [Pg.32]    [Pg.89]   


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