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The airtightness which for the metal make fundamental material is sprayed the injection powder in order to produce conservation formation and conservation formation, production manner of conservation formation and application of conservation formation
The airtightness which for the metal make fundamental material is sprayed the injection powder in order to produce conservation formation and conservation formation, production manner of conservation formation and application of conservation formation
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机译：将金属制成基础材料的气密性喷入喷粉以产生保护层和保护层，保护层的生产方式和保护层的应用
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摘要
A thermally sprayed, gastight protective layer for metal substrates, especially those based on iron, nickel, aluminum, magnesium and/or titanium, comprises spray powder containing at least two components, of which the first is a silicate mineral or rock, and the second is a metal powder and/or a further silicate mineral or rock. The silicate mineral or rock component in the spray powder has an alkali content of less than 6 wt.%. A thermally sprayed, gastight protective layer for metal substrates, especially those based on iron (Fe), nickel (Ni), aluminum (Al), magnesium (Mg) and/or titanium (Ti) comprises spray powder containing at least two components, of which the first is a silicate mineral or rock, and the second is a metal powder and/or a further silicate mineral or rock. The silicate mineral or rock component in the spray powder has an alkali content of less than 6 wt.%. The silicate component of the spray powder comprises natural or synthetically produced minerals or rocks. The spray powder is composed of three components, namely of a first and a second silicate mineral or rock and of a metal powder. The spray powder contains a content of at least 10 wt.% of a silicate component having a content of greater than 99% of silica (SiO 2). The protective layer has a thermal conductivity of 0.8-5 W/mK, and a layer thickness of 100-2500 mu m. Independent claims are included for the following: (1) a spray powder composed of at least two components for production of a protective layer; and (2) production of the protective layer involves application of the protective layer on the metal substrate using flame spraying, high-velocity oxygen-fuel flame spraying (HVOF) or plasma spraying, where the coefficients of thermal expansion of layer and substrate are adapted during application of the protective layer by controlled partial devitrification of the mineral components of the spray powder.
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