منابع مشابه
High-temperature Corrosion in Power-generating Systems
Several technologies are being developed to convert coal into clean fuel for use in power generation. From the standpoint of component materials in these technologies, the environments created by coal conversion and their interactions with materials are of interest. Coal is a complex and relatively dirty fuel that contains varying amounts of sulfur and a substantial fraction of noncombustible m...
متن کاملHigh temperature corrosion in practical systems
There is a wide range of engineering systems where either the efficiency, the cost, or the reliability and lifetime is limited by high temperature corrosion processes. This includes gas turbines, boilers of various kinds, coal gasifiers, reformers and catalytic regenerators in the petrochemical industry, and heat exchangers and heat recovery systems of many kinds. The issues can largely be sepa...
متن کاملNitrogen and Water in High Temperature Corrosion
Service life-time of alloys used in high temperature applications is often limited by corrosion. FeCrAl(Re) alloys are partially designed to form a protective α-alumina oxide scale at elevated temperatures in order to mitigate further oxidation. The scale growth commonly follows a parabolic rate law, which under a Wagnerian setting depends on transport of charged species; ions, vacancies and el...
متن کاملFundamental aspects of high-temperature corrosion
Some recent considerations in three widely different aspects of high-temperature corrosion are summarized: 1) reactions at the metavscale interface in support of scale growth; 2) mass transfer effects in the control of evaporation of volatile reaction products; and 3) the codeposition of multiple elements for diffusion coatings using halide-activated cementation packs. The climb of misfit edge ...
متن کاملHigh Temperature Oxidation and Corrosion Properties of High Entropy Superalloys
The present work investigates the high temperature oxidation and corrosion behaviour of high entropy superalloys (HESA). A high content of various solutes in HESA leads to formation of complex oxides, however the Cr and Al activities of HESA are sufficient to promote protective chromia or alumina formation on the surface. By comparing the oxidation and corrosion resistances of a Ni-based supera...
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ژورنال
عنوان ژورنال: Materia Japan
سال: 1997
ISSN: 1340-2625,1884-5843
DOI: 10.2320/materia.36.904