**Conflict of interest**

*Design and Manufacturing*

In particular, MoS2 was a common solid lubricant. Mixed MoS2 in the Cu-based sintered material had better friction characteristics [14]. The sliding mechanism of MoS2 is well known, and it is possible that a born person has the same or similar

A friction test was conducted on the developed sintered Cu alloy-containing sulfide particles. The friction performance of the developed material was compared with those containing lead. The following is a summary of the results obtained. The change in coefficient of friction depends on the behavior of the adhesive

Sulfide-dispersed porous sintered Cu alloy realizes stabilization of friction coef-

In this study, we discussed how it affects already atomized bronze sulfide. Specifically, the strength of bronze matrix and the reaction between sulfide and hydrogen gas are drawing attention. We will clarify the composition and atmosphere effective for sintering bronze with sulfide dispersed. As a result, copper sulfide can sinter several types of atmosphere such as inert, reducing, and vacuum. In many reducing conditions, attention is paid to the disappearance of sulfides from

sliding mechanism as MoS2 [15–17].

*Surface of disks and rings after the test [11].*

layer, especially under high load.

ficient at higher load than lead bronze.

**4.3 Summary**

**Figure 15.**

**5. Conclusions**

**154**

The authors declare that they have no conflicts of interest.
