Abstract
1. During the sintering of iron base powder materials containing various metallic Sulfides, the latter may undergo partial or complete decomposition. The initial temperature and degree of their decomposition depend upon their stability, the composition of the material being sintered, and the nature of the atmosphere used. 2. The presence of sulfides in sintered materials used as bearings operating in an air atmosphere results in the formation of wear-resistant films on their friction surfaces. The composition of the these films is influenced by the chemical transformations occurring during sintering and the nature of the interaction in the friction contact zone, involving the matrix material, the sulfur-containing addition, and the ambient atmosphere.
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