Abrasion resistant sintered alloy
AssigneeNippon Piston Ring Co., Ltd.
InventorsShigeru Urano, Osamu Hirakawa
Life of this patent
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Abstract
An abrasion resistant alloy sintered in a liquid phase, which contains, by weight, 1.5 to 4.0% C, 0.5 to 1.2% Si, 1.0% or less Mn, 2.0 to less than 20.0% Cr, 0.5 to 2.5% Mo, 0.2 to 0.8% P, and the balance of Fe. The alloy is suitable for fabricating sliding parts in internal combustion engines, such as valve mechanisms.
Claims17
An abrasion-resistant sintered alloy containing, by weight, 1.5 to 4.0% of carbon, 0.5 to 1.2% of silicon, 1.0% or less of manganese, 2.0 to less than 20.0% of chromium, 0.5 to 2.5% of molybdenum, 0.2 to 0.8% of phosphorus, 0.5 to 2.5% of nickel, and the balance being iron, said alloy being sintered in a liquid-phase, and said alloy containing carbides granularly distributed in a base structure that comprises a matrix of martensite and bainite.
An abrasion-resistant sintered alloy consisting essentially of, by weight, 1.5 to 4.0% of carbon, 0.5 to 1.2% of silicon, 1.0% or less of manganese, 2.0 to less than 20.0% of chromium, 0.5 to 2.5% of molybdenum, 0.2 to 0.8% of phosphorus, 0.5 to 2.5% of nickel, and the balance being iron, said alloy being sintered in a liquid-phase.
An abrasion-resistant sintered alloy consisting essentially of, by weight, 1.5 to 4.0% of carbon, 0.5 to 1.2% of silicon, 1.0% or less of manganese, 2.0 to less than 20.0% of chromium, 0.5 to 2.5% of molybdenum, 0.2 to 0.8% of phosphorus, 0.5 to 2.5% of nickel, and the balance being iron, said alloy being sintered in a liquid-phase, and said alloy consisting essentially of carbides granularly distributed in a base structure that is a matrix of martensite and bainite.
Dependencies are inferred from the claim text.