WC-17Co含量对(WC-17Co/NiCrBSi)复合钎焊涂层结合性能及耐磨性的影响

Effect of WC-17Co Content on Bonding Property and Wearability of (WC-17Co/NiCrBSi) Composite Brazing Coating

用真空钎焊方法,在45#钢基体表面钎焊一层WC-17Co/NiCrBSi耐磨涂层(厚1.5mm).研究了WC17Co含量对涂层性能的影响.涂层自身结合强度随WC-1 7Co含量的增加而增大,当涂层中WC-17Co含量为69wt%时,涂层结合强度达184MPa.涂层的抗磨料磨损性能高于火焰堆焊WC-17Co/NiCrBSi涂层和CoCrW堆焊涂层.

A (WC-17Co/NiCrBSi) brazing coating was applied to 45* steel through vacuum brazing technology. The effect of WC-17Co content on properties of the coating was analyzed. The strength of the coating increased with the WC-17Co content. The bonding strength approaches to 184MPa when the content of WC-17Co reaches 69wt% in the coating. The abrasive property of the brazing coating is better than the (WC-17Co/NiCrBSi) flame overlaying and CoCrW overlaying.