| 摘要 |
In a thermally sprayed, gastight protective layer for metal substrates, especially those based on Fe, Ni, Al, Mg and/or Ti, wherein the spray powder for the purpose comprises 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 per cent by weight.
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