摘要:
The invention relates to a copper alloy, which has hard particles and optionally solid lubricants. The invention further relates to the use of said copper alloy for a bearing and to a bearing having said copper alloy. The invention further relates to a method for producing a bearing having a copper alloy, wherein a metal powder is produced, hard particles and optional solid lubricants are optionally added to said powder, and the powder is sintered onto a substrate. Finally, the invention relates to an alternative method for producing a bearing, wherein the copper alloy is applied to a substrate by means of casting or plating or wherein the bearing is made completely of the copper alloy.
摘要:
An aluminum alloy includes, in weight percent, 0.50 - 1.30% Si, 0.2 - 0.60% Fe, 0.15% max Cu, 0.5 - 0.90% Mn, 0.6 - 1.0% Mg, and 0.20% max Cr, the balance being aluminum and unavoidable impurities. The alloy may include excess Mg over the amount that can be occupied by Mg-Si precipitates. The alloy may be utilized as a matrix material for a composite that includes a filler material dispersed in the matrix material. One such composite may include boron carbide as a filler material, and the resultant composite may be used for neutron shielding applications.
摘要:
The present disclosure relates to a process for producing metallic carbide particulate reinforced aluminum alloy matrix composite. The present disclosure envisages generating in-situ carbon for reacting with the metal containing compound in the molten aluminum matrix to obtain metallic carbide particulate. A hydrocarbon compound is selected as a carbon source. The process of the present disclosure allows up to 20 % of the metallic carbide particulate reinforcement to be introduced in the aluminum matrix.
摘要:
A part includes a three-dimensional porous metallic workpiece printed via an additive manufacturing process and subsequently subjected to a diffusion-based process to convert at least a portion of the porous metallic workpiece to a ceramic workpiece or an intermetallic workpiece.
摘要:
Compositions suitable for use in an electrolytic cell for producing aluminum are provided. The compositions can contain a powder blend of boron oxide, a titanium dioxide, aluminum, and titanium diboride. The powder blend can be compacted into tiles and arranged as a cathode surface. The boron oxide and the titanium dioxide in the tiles can be made to react under low temperature molten aluminum to produce titanium diboride in situ. The reaction yields a dense dimensionally stable wettable cathode substrate that can reduce the power consumption in the aluminum electrowinning process.
摘要:
A particular method includes uniaxially hot pressing a preform that includes abrasive particles in a bonding material to form a bonded abrasive body.
摘要:
A process for producing metallic carbide particulate reinforced aluminum alloy matrix composite comprises the following steps: a) providing a molten aluminum matrix maintained at a temperature in the range of 750°C to 1200 °C; b) pneumatically injecting a metal containing compound into said molten matrix to form an alloy melt; c) injecting a hydrocarbon compound into said melt, to generate in-situ carbon for reacting with said melt, to obtain molten alloy containing metallic carbide particulate; and d) casting and solidifying said molten alloy.