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公开(公告)号:US4861618A
公开(公告)日:1989-08-29
申请号:US121029
申请日:1987-11-16
摘要: A thermal barrier coating system for the protection of nickel and cobalt base superalloys at elevated temperature comprises 7% yttria partially stabilized zirconia plasma sprayed in air on a plasma sprayed NiCoCrAlY bond coat which has been plasma sprayed in air.
摘要翻译: 用于在高温下保护镍和钴基超级合金的热障涂层系统包括在等离子体喷涂的NiCoCrAlY粘合涂层上喷射空气中的7%氧化钇部分稳定的氧化锆等离子体等离子体喷涂在空气中。
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公开(公告)号:US4439241A
公开(公告)日:1984-03-27
申请号:US353764
申请日:1982-03-01
申请人: Earle A. Ault , Charles E. Bevan
发明人: Earle A. Ault , Charles E. Bevan
CPC分类号: C11D7/06 , C23G1/20 , F01D25/002 , B23P2700/06
摘要: Residues accumulated during use are removed from the small interior cavities of superalloy airfoils by a process which includes exposing the interior of the part to an aqueous solution of 20-45% potassium hydroxide at a pressure of 10.4-24 kPa (150-350 psi) and temperature of 150.degree.-235.degree. C. (300.degree.-450.degree. F.) for about 20 hours, followed by water blasting using a pressure greater than about 14 MPa (2,000 psi). Unless the part is kept continuously wet between the first and second steps, the second step will not be effective.
摘要翻译: 在使用过程中累积的残余物通过包括在10.4-24kPa(150-350psi)的压力下将该部件的内部暴露于20-45%氢氧化钾的水溶液的方法从小型内部空腔中除去, 温度为150°-235℃(300°-450°F)约20小时,然后用大于约14MPa(2,000psi)的压力喷水。 除非第一和第二步骤之间的部分保持连续湿润,否则第二步将无效。
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