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    • 5. 发明授权
    • Method for removing engine deposits from turbine components and composition for use in same
    • 用于从涡轮机部件移除发动机沉积物的方法和用于其的组合物
    • US07115171B2
    • 2006-10-03
    • US11020291
    • 2004-12-27
    • John Matthew PowersWilliam Clarke Brooks
    • John Matthew PowersWilliam Clarke Brooks
    • C23G1/02
    • C11D3/046C11D3/042C11D3/048C11D7/08C11D7/10C11D7/105C11D11/0041C23G1/10
    • A method and cleaning composition for removing engine deposits from turbine components, in particular turbine disks and turbine shafts. This method comprises the following steps: (a) providing a turbine component having a surface with engine deposits thereon, wherein the turbine component comprises a nickel and/or cobalt-containing base metal; and (b) treating the surface of the turbine component with a cleaning composition to convert the engine deposits thereon to a removable smut without substantially etching the base metal of the turbine component. The cleaning composition comprises an aqueous solution that is substantially free of acetic acid and comprising: a nitrate ion source in an amount, by weight of the nitrate ion, of from about 470 to about 710 grams/liter; and a bifluoride ion source in an amount, by weight of the bifluoride ion, of from about 0.5 to about 15 grams/liter. The smut that is formed can be removed from the surface of the turbine component in a manner that does not substantially alter the surface thereof.
    • 一种用于从涡轮机部件,特别是涡轮盘和涡轮轴中去除发动机沉积物的方法和清洁组合物。 该方法包括以下步骤:(a)提供具有其上具有发动机沉积物的表面的涡轮机部件,其中所述涡轮机部件包括含镍和/或钴的贱金属; 和(b)用清洁组合物处理涡轮机部件的表面,以将发动机沉积物转化为可移除的污物,而基本上不会蚀刻涡轮机部件的基体金属。 清洁组合物包含基本上不含乙酸的水溶液,其包含:硝酸根离子重量的硝酸根离子源为约470至约710克/升; 和二氟离子源的量为约0.5至约15克/升的二氟离子源。 形成的污迹可以以不大体上改变其表面的方式从涡轮机部件的表面移除。
    • 7. 发明授权
    • Method of selectively stripping an engine-run ceramic coating
    • 选择性剥离发动机运行的陶瓷涂层的方法
    • US08038894B2
    • 2011-10-18
    • US11564639
    • 2006-11-29
    • William Clarke Brooks
    • William Clarke Brooks
    • B44C1/22
    • C23G1/085B24C1/086C04B35/486C04B35/6306C04B2235/3241C04B2235/40C23F1/16
    • A process for selectively stripping a coating from a component of a turbomachine, and particularly a coating having a ceramic matrix that contains metallic particles dispersed therein that render the coating more difficult to remove from the component after the component has been subjected to elevated temperatures during operation of the turbomachine. The process generally includes immersing the component in an aqueous solution containing ferric chloride, nitric acid, and phosphoric acid, for a duration sufficient to attack the metallic particles in the coating. The component is then removed from the aqueous solution and its surface rinsed of the aqueous solution. The immersing and removing steps are then sequentially repeated a sufficient number of times to sufficiently attack the metallic particles to enable the coating to be mechanically removed from the component.
    • 一种用于从涡轮机组件选择性地剥离涂层的方法,特别是具有包含分散在其中的金属颗粒的陶瓷基体的涂层,其使得在组件在操作期间经受高温之后更难以从组件移除 的涡轮机。 该方法通常包括将组分浸入含有氯化铁,硝酸和磷酸的水溶液中持续足够时间以侵蚀涂层中的金属颗粒。 然后从水溶液中除去组分,并将其表面漂洗水溶液。 然后将浸渍和去除步骤顺序地重复足够的次数以充分攻击金属颗粒,以使涂层能够从组件机械地移除。
    • 9. 发明授权
    • Composition for removing engine deposits from turbine components
    • 用于从涡轮机部件移除发动机沉积物的组合物
    • US07687449B2
    • 2010-03-30
    • US11523643
    • 2006-09-20
    • John Matthew PowersWilliam Clarke Brooks
    • John Matthew PowersWilliam Clarke Brooks
    • C11D7/08C11D7/02C11D1/00C11D3/26
    • C11D3/046C11D3/042C11D3/048C11D7/08C11D7/10C11D7/105C11D11/0041C23G1/10
    • A method and cleaning composition for removing engine deposits from turbine components, in particular turbine disks and turbine shafts. This method comprises the following steps: (a) providing a turbine component having a surface with engine deposits thereon, wherein the turbine component comprises a nickel and/or cobalt-containing base metal; and (b) treating the surface of the turbine component with a cleaning composition to convert the engine deposits thereon to a removable smut without substantially etching the base metal of the turbine component. The cleaning composition comprises an aqueous solution that is substantially free of acetic acid and comprising: a nitrate ion source in an amount, by weight of the nitrate ion, of from about 470 to about 710 grams/liter; and a bifluoride ion source in an amount, by weight of the bifluoride ion, of from about 0.5 to about 15 grams/liter. The smut that is formed can be removed from the surface of the turbine component in a manner that does not substantially alter the surface thereof.
    • 一种用于从涡轮机部件,特别是涡轮盘和涡轮轴中去除发动机沉积物的方法和清洁组合物。 该方法包括以下步骤:(a)提供具有其上具有发动机沉积物的表面的涡轮机部件,其中所述涡轮机部件包括含镍和/或钴的贱金属; 和(b)用清洁组合物处理涡轮机部件的表面,以将发动机沉积物转化为可移除的污物,而基本上不会蚀刻涡轮机部件的基体金属。 清洁组合物包含基本上不含乙酸的水溶液,其包含:硝酸根离子重量的硝酸根离子源为约470至约710克/升; 和二氟离子源的量为约0.5至约15克/升的二氟离子源。 形成的污迹可以以不大体上改变其表面的方式从涡轮机部件的表面去除。