hydrogen cracking

См. также в других словарях:

• Hydrogen embrittlement — (or hydrogen grooving) is the process by which various metals, most importantly high strength steel, become brittle and crack following exposure to hydrogen. Hydrogen cracking can pose an engineering problem especially in the context of a… …   Wikipedia

• Hydrogen damage — is the generic name given to a large number of metal degradation processes due to interaction with hydrogen.Hydrogen is present practically everywhere, in the atmosphere, several kilometres above the earth and inside the earth. Engineering… …   Wikipedia

• Hydrogen darkening — is a physical degradation of the optical properties of glass. Free hydrogen atoms are able to bind to the SiO2 silica glass compound forming hydroxyl (OH) a chemical compound that interferes with the passage of light through the glass.The problem …   Wikipedia

• Hydrogen-induced delayed cracking — Hydrogen induced delayed cracking. См. Водородное растрескивание под напряжением. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

• Cracking (chemistry) — In petroleum geology and chemistry, cracking is the process whereby complex organic molecules such as kerogens or heavy hydrocarbons are broken down into simpler molecules such as light hydrocarbons, by the breaking of carbon carbon bonds in the… …   Wikipedia

• Hydrogen economy — The hydrogen economy is a proposed system of delivering energy using hydrogen. The term hydrogen economy was coined by John Bockris during a talk he gave in 1970 at General Motors (GM) Technical Center.[1] Hydrogen advocates promote hydrogen as… …   Wikipedia

• Stress corrosion cracking — (SCC) is the unexpected sudden failure of normally ductile metals or tough thermoplastics subjected to a tensile stress in a corrosive environment, especially at elevated temperature (in the case of metals). SCC is highly chemically specific in… …   Wikipedia

• Sulfide stress cracking — Sulfide stress cracking, or sulfide stress corrosion cracking (SSCC), is a special corrosion type, a form of stress corrosion cracking. Susceptible alloys, especially steels, react with hydrogen sulfide, forming metal sulfides and elementary… …   Wikipedia

• Fluid catalytic cracking — (FCC) is the most important conversion process used in petroleum refineries. It is widely used to convert the high boiling hydrocarbon fractions of petroleum crude oils to more valuable gasoline, olefinic gases and other products.cite book|author …   Wikipedia

• Endohedral hydrogen fullerene — or H2@C60 is an endohedral fullerene containing molecular hydrogen. This chemical compound has a potential application in molecular electronics and was synthesized in 2005 at Kyoto University by the group of Koichi Komatsu [ Synthesis, Structure …   Wikipedia

• Cold cracking — is a defect that occurs in welding and requires all the following preconditions: * susceptible microstructure ( e.g. martensite) * hydrogen present in the microstructure (hydrogen embrittlement) * service temperature environment (normal… …   Wikipedia