Casting aluminum alloy with dispersed cnt and method for producing the same
a technology of dispersed cnt and aluminum alloy, which is applied in the field of casting aluminum alloy, can solve the problems of difficult development of cnt composites, unfavorable mass production, and non-uniform dispersion of cnt, and achieve the effects of mass production, improved rigidity and noise, and vibration
Inactive Publication Date: 2014-02-06
HYUNDAI MOTOR CO LTD
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Benefits of technology
The present invention provides a way to make a high elastic casting aluminum alloy that improves rigidity, reduces noise, vibration, and harshness (NVH), and makes it easier to manufacture on a large scale. The method involves mixing molten Al—Ti—B-based alloy and molten Al—B-based alloy, and stirring them vigorously to form a TiB2 compound. By adding a small amount of CNT with oxide coating, the resulting alloy has much greater elasticity. This alloy can be used to make various components that require rigidity and reduced NVH.
Problems solved by technology
Unfortunately, the development of CNT composites has been difficult.
For example, it is difficult to disperse large quantities of CNT due to the effect of CNT agglomeration, which causes non-uniform dispersion of the CNT.
Additionally, attempts to develop such composites have been based on a CNT powder molding process, which has proven to be cost prohibitive for mass production.
Conventionally, a reinforced aluminum alloy of a metal-based compound, a CNT dispersed aluminum composite, and the like have been produced, but the improvement of the elasticity was insufficient, typically displaying 100 GPa or less, as comparing with a cast-iron elasticity of 120 GPa.
Furthermore, when producing a CNT composite, it was difficult to disperse CNT at an amount of more than 5 vol % due to the non-uniform dispersion caused by CNT agglomeration.
Method used
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[0020]Hereinafter reference will now be made in detail to various embodiments of the present invention, examples of which are illustrated in the accompanying drawings and described below. While the invention will be described in conjunction with exemplary embodiments, it will be understood that the present description is not intended to limit the invention to those exemplary embodiments. On the contrary, the invention is intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims.
[0021]Unless specifically stated or obvious from context, as used herein, the term “about” is understood as within a range of normal tolerance in the art, for example within 2 standard deviations of the mean. “About” can be understood as within 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, 1%, 0.5%, 0.1%, 0.05%, or 0.01% of the stated value. U...
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Abstract
The present disclosure provides a casting aluminum alloy with dispersed carbon nanotubes (CNT), which is molded by charging an oxide-coated CNT in the range of 1 to 5 vol % into a molten Al—Ti—B-based alloy, and stirring the resulting mixture. The aluminum alloy has enhanced elasticity by forming a TiB2 compound in a structure, and a method for producing the same.
Description
CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims under 35 U.S.C. §119(a) the benefit of Korean Patent Application No. 10-2011-0122884 filed on Nov. 23, 2011, the entire contents of which are incorporated herein by reference.BACKGROUND[0002](a) Technical Field[0003]The present disclosure relates to a casting aluminum alloy with dispersed high elastic casting carbon nanotubes for mass production, and a method for producing the same.[0004](b) Background Art[0005]Carbon nanotubes (CNT) are a micro-molecule having a long-tube shape formed by carbons linked to a six-membered ring structure, and a diameter of 1 nanometer (1 nanometer is equal to one billionth of 1 meter). CNT are so named because a carbon sheet formed by linking 3 carbon atoms to a honeycomb structure is rolled into a tube shape.[0006]CNT are a new material having the tension force one hundred times stronger than a steel, and excellent flexibility. Because CNT are hollow, they are very light. Additionall...
Claims
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Login to View More IPC IPC(8): C22C1/02C22C21/00
CPCC22C1/026C22C26/00C22C1/1036C22C21/003C22C32/0036C22C21/00B82B3/00
Inventor MIN, BYUNG HOPARK, HOON MO
Owner HYUNDAI MOTOR CO LTD