Sintered aluminum-alloy
AssigneeShowa Denko K.K.
InventorsShin Miura, Youichi Hirose, Yoshio Machida, Mitsuaki Sato
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Abstract
A sintered aluminum-alloy consisting essentially in weight of 0.1-2.0% Mg, 0.1-2.0% Si, 0.2-6.0% Cu and Al and unavoidable impurities in balance is produced by sintering a mixture of a first aluminum-alloy starting powder and at least one second aluminum-alloy starting powder. The first aluminum-alloy powder consists of 0.1-3.0% Cu and Al and unavoidable impurities in balance and the second aluminum-alloy is selected from (1) an aluminum alloy starting powder consisting of 4-20% Mg, 12-30% Si and Al and unavoidable impurities in balance and (2) an aluminum-alloy starting powder consisting of from 0.1-20.0% Mg, 1-20% Si, 30-50% Cu and Al and unavoidable impurities in balance.
Claims45
A sintered aluminum-alloy consisting essentially of from 0.1 to 2.0% by weight of Mg, from 0.1 to 2.0% by weight of Si, from 0.2 to 6% by weight of Cu, and Al and unavoidable impurities in balance, said aluminum-alloy produced by sintering a mixed, aluminum-alloy starting powder which consists of a mixture of a first aluminum-alloy starting powder and at least one second aluminum alloy starting powder such that diffusion occurs between the first and second starting powder, said first aluminum-alloy starting powder consisting of from 0.1 to 3.0% by weight of Cu and Al and unavoidable impurities in balance, and said second aluminum-alloy starting powder selected from (1) an aluminum alloy starting powder consisting of from 4 to 20% by weight of Mg, from 12 to 30% by weight of Si, and Al and unavoidable impurities in balance, and (2) an aluminum-alloy starting powder consisting of from 0.1 to 20.0% by weight of Mg, from 1 to 20% by weight of Si, from 30 to 50% by weight of Cu, and Al and unavoidable impurities in balance,
A sintered aluminum-alloy consisting essentially of from 0.1 to 2.0% by weight of Mg, from 0.1 to 2.0% by weight of Si, from 0.2 to 6% by weight of Cu, and Al and unavoidable impurities in balance, said sintered aluminum-alloy produced by sintering a mixed, aluminum-alloy starting powder which consists of a mixture of a first aluminum-alloy starting powder and a second aluminum-alloy starting powder such that diffusion occurs between the first and second starting powders, said first aluminum-alloy starting powder consisting of from 0.1 to 3.0% by weight of Cu and Al and unavoidable impurities in balance, and said second aluminum-alloy powder consisting of from 4 to 20% by weight of Mg, from 12 to 30% by weight of Si, from 1 to 30% by weight of Cu, and Al and unavoidable impurities in balance.
A sintered aluminum-alloy consisting essentially of from 0.1 to 2.0% by weight of Mg, from 0.1 to 2.0% by weight of Si, from 0.2 to 6% by weight of Cu, from 0.2 to 2% by weight of a lubricant, and Al and unavoidable impurities in balance, said sintered aluminum-alloy produced by sintering a mixed, aluminum-alloy starting powder which consists of a mixture of a first aluminum-alloy starting powder, at least one second aluminum-alloy starting powder, and a lubricant free of metal such that diffusion occurs between the first and second starting powders, said first aluminum alloy starting powder consisting of from 0.1 to 3.0% by weight of Cu and Al and unavoidable impurities in balance, and said second aluminum-alloy starting powder selected from (1) an aluminum alloy starting powder consisting of from 4 to 20% by weight of Mg, from 12 to 30% by weight of Si, and Al and unavoidable impurities in balance, and (2) an aluminum-alloy starting powder consisting of from 0.1 to 20.0% by weight of Mg, from 1 to 20% by weight of Si, from 30 to 50% by weight of Cu, and Al and unavoidable impurities in balance, said starting powder containing from 0.2 to 2% by weight of the lubricant.
A sintered aluminum-alloy consisting essentially of from 0.1 to 2.0% by weight of Mg, from 0.1 to 2.0% by weight of Si, from 0.2 to 6% by weight of Cu, and Al and unavoidable impurities in balance, said sintered aluminum-alloy produced by sintering a mixed, aluminum-alloy starting powder which consists of a mixture of a first aluminum-alloy starting powder, a second aluminum-alloy starting powder, and a lubricant free from metal such that diffusion occurs between the first and second starting powders, said first aluminum-alloy starting powder consisting of from 0.1 to 3.0% by weight of Cu and Al and unavoidable impurities in balance, and said second aluminum-alloy starting powder consisting of from 4 to 20% by weight of Mg, from 12 to 30% by weight of Si, from 1 to 30% by weight of Cu, and Al and unavoidable impurities in balance, said starting powder containing from 0.2 to 2% by weight of the lubricant.
Dependencies are inferred from the claim text.