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公开(公告)号：US12110808B2
公开(公告)日：2024-10-08
申请号：US18512227
申请日：2023-11-17
发明人： Yueguang Yu , Lingfeng Huang , Jianming Liu , Shuai Wang , Xiaoliang Lu , Yinghui Cai , Rui Guo , Tong Liu , Dan Guo , Chao Wu
CPC分类号： F01D5/288 , B05D1/12 , C23C4/073 , C23C28/022 , C25D5/14 , C25D7/00 , C25D15/00 , F01D11/122
摘要： A titanium alloy blade tip with a wear-resistant protective coating and a preparation method thereof are provided. The method includes: (1) spraying MCrAlY alloy powder on a surface of a titanium alloy blade tip by high velocity oxygen fuel (HVOF) spraying at a spraying distance of 300-400 mm to obtain the titanium alloy blade tip with a MCrAlY layer on the surface; where M is one of Ni and NiCo; (2) pre-plating Ni at a current density of 4-10 A/dm2; (3) placing the pre-plated titanium alloy blade tip in a Watt solution, covering a surface of the pre-plated titanium alloy blade tip obtained in the step (2) with abrasive particles, and then performing composite electroplating at a current density of 0.5-2 A/dm2. In the method, the wear-resistant protective coating with the high adhesion strength is prepared on the titanium alloy blade tip, and the wear-resistant protective coating has good wear resistance.
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2.发明公开公开(公告)号：US20240167142A1
公开(公告)日：2024-05-23
申请号：US18512039
申请日：2023-11-17
发明人： Yueguang Yu , Weiao Hou , Jianming Liu , Jie Shen , Xiaoliang Lu , Xu Wang , Dan Guo , Zhaoran Zheng , Kaiping Du
摘要： A dense thick alloy coating with no layered organizational structure and a preparation method thereof are provided. The preparation method includes the following steps: step 1, placing a substrate in a plasma spraying apparatus, controlling a vacuum degree of the plasma spraying apparatus to be 0.2 mbar-0.5 mbar, controlling a length of a plasma flame of the plasma spraying apparatus to be 1000 mm-1200 mm, and controlling a diameter of the plasma flame to be 200 mm-300 mm; step 2, preheating, by using a plasma spray gun, the substrate to a temperature of 700° C.-1000° C. to obtain a preheated substrate; step 3, plasma spraying an alloy powder on the preheated substrate under a specific plasma spraying condition to obtain a sprayed substrate; and step 4, cooling the sprayed substrate after the plasma spraying, to thereby obtain the dense thick alloy coating without layered organizational structure.
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3.发明公开公开(公告)号：US20240167386A1
公开(公告)日：2024-05-23
申请号：US18512227
申请日：2023-11-17
发明人： Yueguang Yu , Lingfeng Huang , Jianming Liu , Shuai Wang , Xiaoliang Lu , Yinghui Cai , Rui Guo , Tong Liu , Dan Guo , Chao Wu
CPC分类号： F01D5/288 , B05D1/12 , C23C28/022 , C25D7/00 , F01D11/122
摘要： A titanium alloy blade tip with a wear-resistant protective coating and a preparation method thereof are provided. The method includes: (1) spraying MCrAlY alloy powder on a surface of a titanium alloy blade tip by high velocity oxygen fuel (HVOF) spraying at a spraying distance of 300-400 mm to obtain the titanium alloy blade tip with a MCrAlY layer on the surface; where M is one of Ni and NiCo; (2) pre-plating Ni at a current density of 4-10 A/dm2; (3) placing the pre-plated titanium alloy blade tip in a Watt solution, covering a surface of the pre-plated titanium alloy blade tip obtained in the step (2) with abrasive particles, and then performing composite electroplating at a current density of 0.5-2 A/dm2. In the method, the wear-resistant protective coating with the high adhesion strength is prepared on the titanium alloy blade tip, and the wear-resistant protective coating has good wear resistance.
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