摘要:
A low-friction sliding mechanism includes first and second sliding members having respective sliding surfaces slidable relative to each other and a lubricant applied to the sliding surfaces of the first and second sliding members. At least the sliding surface of the first sliding member is made of a diamond-like carbon material, and at least the sliding surface of the second sliding member is made of either an aluminum-based alloy material, a magnesium-based alloy material or a diamond-like carbon material. The lubricant contains a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.
摘要:
A low-friction sliding mechanism includes first and second sliding members having respective sliding surfaces slidable relative to each other and a lubricant applied to the sliding surfaces of the first and second sliding members. At least the sliding surface of the first sliding member is made of a diamond-like carbon material, and at least the sliding surface of the second sliding member is made of either an aluminum-based alloy material, a magnesium-based alloy material or a diamond-like carbon material. The lubricant contains a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.
摘要:
An aluminum alloy for a die casting, used as the material of parts of an automotive vehicle. The aluminum alloy consists essentially of Si in an amount ranging from 10 to 12% by weight, Mg in an amount ranging from 0.15 to 0.50% by weight, Mn in an amount ranging from 0.5 to 1.0% by weight, Fe in an amount of not more than 0.15% by weight, Ti in an amount of not more than 0.1% by weight, Sb in an amount ranging from 0.05 to 0.20% by weight, B in an amount ranging from 0.005 to 0.02%, and balance consisting of aluminum and inevitable impurities. Sb in the amont ranging from 0,05 to 0,20% by weight could be replaced with Sr in an amount from 0,005 to 0,020% by weight.
摘要:
The copper alloy contains: 6 - 15 wt% Ni; 1 - 5 wt% Si; 1 - 5 wt% (total) Mo, W, Ta, Nb, and/or V. The alloy may also contain 0.5 - 1.5 wt% Fe, 1 - 5 wt% Cr, 0.5 - 0.9 wt% Al, and 0.1 - 1.0 wt% P, which are obligatory when Ni is above 9 wt%. The alloy may also contain 1 - 10 wt% Mn and 0.01 to 0.1 wt% rare earth metal. A valve seat (2) is formed by build-up cladding by irradiating a laser beam on a powder (4) of the copper alloy, provided in the rim of a port (3) formed in an engine cylinder head (1). Due to the composition of the copper alloy, the valve seat (2) has few microcracks and excellent abrasion resistance.
摘要:
The copper alloy contains: 6 - 15 wt% Ni; 1 - 5 wt% Si; 1 - 5 wt% (total) Mo, W, Ta, Nb, and/or V. The alloy may also contain 0.5 - 1.5 wt% Fe, 1 - 5 wt% Cr, 0.5 - 0.9 wt% Al, and 0.1 - 1.0 wt% P, which are obligatory when Ni is above 9 wt%. The alloy may also contain 1 - 10 wt% Mn and 0.01 to 0.1 wt% rare earth metal. A valve seat (2) is formed by build-up cladding by irradiating a laser beam on a powder (4) of the copper alloy, provided in the rim of a port (3) formed in an engine cylinder head (1). Due to the composition of the copper alloy, the valve seat (2) has few microcracks and excellent abrasion resistance.