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1. 发明申请

WO0194664A3 COATING SYSTEM FOR HIGH TEMPERATURE STAINLESS STEEL 审中-公开
标题翻译：高温不锈钢涂层系统
公开(公告)号：WO0194664A3
公开(公告)日：2002-08-01
申请号：PCT/CA0100848
申请日：2001-06-08
申请人： SURFACE ENGINEERED PRODUCTS CO , TZATZOV KONSTANTIN K , FISHER GARY ANTHONY , PRESCOTT ROBERT , CHEN YAN , ZHENG HANG , SUBRAMANIAN CHINNIA GOUNDER , WYSIEKIERSKI ANDREW GEORGE , MENDEZ ACEVEDO JUAN MANUEL , GORODETSKY ALEXANDER S , REDMOND EDWARD JOHN
发明人： TZATZOV KONSTANTIN K , FISHER GARY ANTHONY , PRESCOTT ROBERT , CHEN YAN , ZHENG HANG , SUBRAMANIAN CHINNIA GOUNDER , WYSIEKIERSKI ANDREW GEORGE , MENDEZ ACEVEDO JUAN MANUEL , GORODETSKY ALEXANDER S , REDMOND EDWARD JOHN
IPC分类号： C23C14/14 , C22C19/05 , C22C21/02 , C23C14/34 , C23C26/00 , C23C28/00 , C23C30/00 , C10G9/16
CPC分类号： C23C28/345 , C23C26/00 , C23C28/321 , C23C28/3215
摘要： A method for protecting carbon steel and stainless steel, and particularly high temperature stainless steel, from coking and corrosion at elevated temperatures in corrosive environments, such as during ethylene production by pyrolysis of hydrocarbons or the reduction of oxide ores, by coating the steel with a coating of MCrA1X or MCrA1XT in which M is nickel, cobalt, iron or a mixture thereof, X is yttrium, hafnium, zirconium, lanthanum, scandium or combination thereof, and T is silicon, tantalum, titanium, platinum, palladium, rhenium, molybdenum, tungsten, niobium, or combination thereof. The coating and substrate preferably are heat-treated at about 1000 to 1200 DEG C for at least about 10 minutes, preferably about 20 minutes to 24 hours, effective to metallurgically bond the overlay coating to the substrate and to form a multiphased microstructure. The coating preferably is aluminized by depositing a layer of aluminum thereon and subjecting the resulting coating to oxidation at a temperature above about 1000 DEG C for a time effective to form an alumina surface layer. An intermediary aluminum-containing interlayer may be deposited directly onto the substrate prior to deposition of the overlay coating and is heat-treated with the coating to form a protective interlayer between the stainless steel substrate and coating to disperse nitride formation at the substrate/coating interface. Also, the coating may be deposited onto and metallurgically bonded to the substrate by plasma transferred arc deposition of atomized powder of MCrA1XT, obviating the need for a separate heat treatment. Alternatively, a blended powder composition to produce a desired MCrA1XT alloy may be applied to the substrate.
摘要翻译：一种用于保护碳钢和不锈钢特别是高温不锈钢的方法，在高温下在腐蚀性环境中的焦化和腐蚀，例如通过碳氢化合物的热解生产乙烯或氧化物矿石的还原，通过用钢 MCrA1X或MCrA1XT的涂层，其中M为镍，钴，铁或其混合物，X为钇，铪，锆，镧，钪或其组合，T为硅，钽，钛，铂，钯，铼，钼，钨，铌或其组合。涂层和基材优选在约1000至1200℃下热处理至少约10分钟，优选约20分钟至24小时，有效地将覆盖涂层冶金结合到基底上并形成多相微结构。涂层优选通过在其上沉积铝层而使其镀铝，并使所得涂层在高于约1000℃的温度下氧化一段时间以有效形成氧化铝表面层。中间含铝中间层可以在沉积覆盖涂层之前直接沉积到基底上，并用涂层进行热处理，以在不锈钢基底和涂层之间形成保护性中间层，以在基底/涂层界面上分散氮化物形成。此外，可以通过等离子体转移电弧沉积MCrA1XT的雾化粉末将涂层沉积在冶金上结合到基底上，从而避免了单独的热处理的需要。或者，可以将用于产生所需MCrAlXT合金的混合粉末组合物施加到基材上。

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