Method for producing a powder-metallurgical product

A powder-metallurgical product, comprising a sintered green body composed of a powder mixture including:

• a first hard phase, which includes 52 to 78% by weight of molybdenum, 0 to 2% by weight of silicon, 0 to 1.5% by weight of copper and a remaining weight proportion of iron and production-related contaminations;
• a second hard phase, which includes 0 to 0.8% by weight of manganese and less than 0.1% by weight of carbon;
• 0 to 1.8% by weight of graphite;
• 0 to 5% by weight each of cobalt, tri-iron phosphide, copper, bronze, phosphorous, sulphur, calcium fluoride and molybdenum;
• 0.1 to 1.8% by weight of a pressing aid and a flow improver;
• and
• a remaining proportion of a total weight of the powder mixture is an iron-base powder.

A tribological system comprising a powder-metallurgical product defined by a sintered green body composed of a powder mixture including:

• a first hard phase, which includes 52 to 78% by weight of molybdenum, 0 to 2% by weight of silicon, 0 to 1.5% by weight of copper and a remaining weight proportion of iron and production-related contaminations;
• a second hard phase, which includes 0 to 0.8% by weight of manganese and less than 0.1% by weight of carbon;
• 0 to 1.8% by weight of graphite;
• 0 to 5% by weight each of cobalt, tri-iron phosphide, copper, bronze, phosphorous, sulphur, calcium fluoride and molybdenum;
• 0.1 to 1.8% by weight of a pressing aid and a flow improver;
• and
• a remaining proportion of a total weight of the powder mixture is an iron-base powder.

An internal combustion engine for a motor vehicle, comprising a powder-metallurgical product defined by a sintered green body composed of a powder mixture including:

• a first hard phase, which includes 52 to 78% by weight of molybdenum, 0 to 2% by weight of silicon, 0 to 1.5% by weight of copper and a remaining weight proportion of iron and production-related contaminations;
• a second hard phase, which includes 0 to 0.8% by weight of manganese and less than 0.1% by weight of carbon;
• 0 to 1.8% by weight of graphite;
• 0 to 5% by weight each of cobalt, tri-iron phosphide, copper, bronze, phosphorous, sulphur, calcium fluoride and molybdenum;
• 0.1 to 1.8% by weight of a pressing aid and a flow improver;
• and
• a remaining proportion of a total weight of the powder mixture is an iron-base powder.

An electric power machine for a motor vehicle, comprising a powder-metallurgical defined by a sintered green body composed of a powder mixture including:

• a first hard phase, which includes 52 to 78% by weight of molybdenum, 0 to 2% by weight of silicon, 0 to 1.5% by weight of copper and a remaining weight proportion of iron and production-related contaminations;
• a second hard phase, which includes 0 to 0.8% by weight of manganese and less than 0.1% by weight of carbon;
• 0 to 1.8% by weight of graphite;
• 0 to 5% by weight each of cobalt, tri-iron phosphide, copper, bronze, phosphorous, sulphur, calcium fluoride and molybdenum;
• 0.1 to 1.8% by weight of a pressing aid and a flow improver;
• and
• a remaining proportion of a total weight of the powder mixture is an iron-base powder.