论文部分内容阅读
采用连续送丝的管约束电爆喷涂方法,进行钼丝的电爆喷涂实验,分析不同初始充电电压和喷涂距离所得涂层的结合强度,以及涂层表面形貌和截面特征。结果表明:在一定的喷涂距离范围内,可获得完全由液态金属撞击基体表面形成的液态喷涂层。根据VDI3198检测标准,液态喷涂层的结合强度属于HF-1～HF-3级。随着喷涂距离的增加,喷涂材料中掺杂的固相颗粒增多,所得涂层的结合强度变小。初始充电电压升高,获得液态喷涂层的最大喷涂距离减小。
The electric wire blasting test of molybdenum wire was carried out by continuous electric wire tube constrained electric blasting. The bonding strength of the coating with different initial charging voltage and spraying distance was analyzed, and the surface morphology and cross section characteristics of the coating were also analyzed. The results show that within a certain range of spraying distance, a liquid sprayed layer formed completely by the liquid metal striking the surface of the substrate can be obtained. According to VDI3198 test standards, the bonding strength of the liquid spray coating belongs to HF-1 ~ HF-3 level. As the spray distance increases, the amount of solid particles doped in the spray material increases and the bond strength of the resulting coating decreases. The initial charging voltage increases, the maximum spraying distance to obtain a liquid spray coating decreases.