公开(公告)号：US20170044673A1

公开(公告)日：2017-02-16

申请号：US15118750

申请日：2015-08-06

Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY

Inventor： Qing TAO ,  Jian WANG ,  Cong WANG ,  Wei LAI ,  Jianyang LIU ,  Fanjun GU

IPC: C23C24/10 ,  C22C38/44 ,  B22F1/00 ,  C22C30/00 ,  C22C27/04 ,  C22C38/52 ,  C22C38/02

CPC classification number: C23C24/103 ,  B22F1/00 ,  B22F1/0003 ,  B22F2302/10 ,  B22F2302/45 ,  B23K10/027 ,  B23K35/00 ,  B23K2103/04 ,  B23K2103/26 ,  B32B15/013 ,  C22C1/1084 ,  C22C27/04 ,  C22C29/067 ,  C22C29/08 ,  C22C30/00 ,  C22C38/02 ,  C22C38/44 ,  C22C38/52 ,  C22C38/56

Abstract: A Co3W3C fishbone-like hard phase-reinforced Fe-based wear-resistant coating and the preparation thereof, which belongs to the field of a wear-resistant coating on the surface of a material and a preparation method thereof. The wear-resistant coating comprises: 1.89-3.77% of C, 5.4-11.7% of Cr, 3.3-7.15% of Ni, 28.81-57.83% of W, 4.2-8.4% of Co, 0.03-0.065% of Si and the balance of Fe. The preparation process of the wear-resistant coating comprises: (1) before plasma cladding, pretreating a matrix; (2) pretreating an iron-based alloy powder; and (3) adjusting the process parameters of plasma cladding, preparing a cladding layer with a predetermined width and a predetermined thickness, and naturally cooling same down in air. The wear-resistant coating is simple in process; the prepared cladding layer has a strong metallurgical bonding property with the matrix structure, so that the best performance matching between the ceramic phase of the cladding layer and the matrix can be achieved; a fishbone-like hard phase Co3W3C has a very high hardness value and plays the role of a framework in the frictional process to reduce the wear of the matrix structure, thereby achieving an excellent wear resistance; plasma cladding is convenient to operate, and can be automatized; and the prepared wear-resistant layer is high in size precision and can be widely applied to surface modification of mechanical parts.

Abstract translation: 一种Co3W3C鱼骨状硬相增强Fe基耐磨涂层及其制备方法，属于材料表面耐磨涂层领域及其制备方法。 耐磨涂层包括：1.89-3.77％的C，5.4-11.7％的Cr，3.3-7.15％的Ni，28.81-57.83％的W，4.2-8.4％的Co，0.03-0.065％的Si和 余铁。 耐磨涂层的制备方法包括：（1）等离子体包覆前，预处理基体; （2）预处理铁基合金粉末; 和（3）调整等离子体包层的工艺参数，制备具有预定宽度和预定厚度的包覆层，并在空气中自然冷却。 耐磨涂层工艺简单; 制备的包层与基体结构具有很强的冶金结合性能，从而可以实现包层的陶瓷相与基体之间的最佳性能匹配; 鱼骨状硬质相Co3W3C具有非常高的硬度值，起到减摩基体结构磨损的摩擦过程的作用，达到优异的耐磨性; 等离子体包层操作方便，可自动化; 制备的耐磨层尺寸精度高，可广泛应用于机械零件的表面改性。