To provide a technology for preventing cracks in a boundary surface between a steel member and a thermal-sprayed layer after the use of the thermal-sprayed layer on the steel member for a long time, and firmly bonding the thermal-sprayed layer to the steel member by sufficiently attaching the thermal-sprayed layer containing ceramics to the surface of the steel member.
A sectional view of a major part of a work obtained by this bonding method shows that a thermal-sprayed layer 20 is in a state where a large amount of ceramic powder 21 is diffused in solidified self-fluxing alloy 37, and the thermal-sprayed layer 20 is firmly bonded to a steel member 15 by a diffusion bonded layer 34. In this bonding method, the bonding strength of the thermal-sprayed layer to the steel member is enhanced by applying the self-fluxing alloy, and ceramic powder is adequately diffused. As a result, the lifetime and durability of the work can be considerably enhanced.
| JPS6240994 | SEAMLESS FLUX CORED WIRE FOR WELDING |
| JPS5385747 | LOW HYDROGEN COATING ARC WELDING ROD |
| WO/2016/076094 | JOINING MEMBER JOINING METHOD AND METAL COMPOSITION |
ISHII YUJI
SUNADA TOSHIHIDE
SAKAI TOMONORI
Tamiya Hiroshi