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Magnesium alloy for notebook computer

A notebook computer and magnesium alloy technology, applied in the field of magnesium alloy, can solve the problems of poor plasticity at room temperature, flammability, galvanic corrosion, etc., and achieve the effect of good protection performance, small pores, and weakened corrosion

Active Publication Date: 2016-11-16
DONGGUAN EONTEC CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, magnesium alloys also have their disadvantages. For example, they are flammable, because magnesium has a great affinity with oxygen, and it is easy to react with oxygen in the air even when it is in a solid state at high temperature. The reaction occurs, a large amount of heat is released, and the thermal conductivity of the generated magnesia is not good, the heat cannot be dissipated in time, which in turn promotes the further oxidation reaction, forming a vicious circle, and the magnesia is loose and porous, which cannot effectively block the intrusion of oxygen in the air Another example is that magnesium alloys have poor room temperature plasticity and poor corrosion resistance. This is because magnesium has high chemical activity and its equilibrium potential is very low. When it contacts with different metals, it is prone to galvanic corrosion and acts as an anode. effect
At room temperature, magnesium alloy reacts with oxygen in the air to form a magnesium oxide film, but because the magnesium oxide film is relatively loose, its compactness coefficient is only 0.79, that is, the volume of magnesium oxide formed after magnesium oxidation is reduced, so the corrosion resistance is very low. Difference

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  • Magnesium alloy for notebook computer
  • Magnesium alloy for notebook computer
  • Magnesium alloy for notebook computer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This embodiment provides a kind of magnesium alloy for notebook computer, by atomic percentage, described magnesium alloy for notebook computer comprises:

[0048]

[0049] The magnesium alloy is also filled with graphite fibers accounting for 3wt% of the total mass of the magnesium alloy;

[0050] The surface of the magnesium alloy is subjected to pickling and activation treatment. According to the mass ratio, the formula of the pickling solution is:

[0051] Na 3 PO 4 12H 2 O 70%;

[0052] h 3 PO 4 10%;

[0053] KMnO 4 20%;

[0054] The duration of pickling activation treatment is 5min.

[0055] The diameter of the graphite fiber is 1μm-5μm, the length is 10μm-1mm, the tensile modulus is 600GPa-800GPa, and the tensile strength is 1.5GPa-4.0GPa.

[0056] Its preparation method comprises the following steps:

[0057] The first step is to preheat the melting furnace and preheat the crucible to 600°C;

[0058] The second step is to pass the protective gas...

Embodiment 2

[0068] This embodiment provides a kind of magnesium alloy for notebook computer, by atomic percentage, described magnesium alloy for notebook computer comprises:

[0069]

[0070] The magnesium alloy is also filled with graphite fibers accounting for 2wt% of the total mass of the magnesium alloy;

[0071] The surface of the magnesium alloy is subjected to pickling and activation treatment. According to the mass ratio, the formula of the pickling solution is:

[0072] Na 3 PO 4 12H 2 O 60%;

[0073] h 3 PO 4 20%;

[0074] KMnO 4 20%;

[0075] The duration of pickling activation treatment is 3min.

[0076] The diameter of the graphite fiber is 1μm-5μm, the length is 10μm-1mm, the tensile modulus is 600GPa-800GPa, and the tensile strength is 1.5GPa-4.0GPa.

[0077] Its preparation method comprises the following steps:

[0078] The first step is to preheat the melting furnace and preheat the crucible to 610°C;

[0079] The second step is to pass the protective gas...

Embodiment 3

[0089] This embodiment provides a kind of magnesium alloy for notebook computer, by atomic percentage, described magnesium alloy for notebook computer comprises:

[0090]

[0091] The magnesium alloy is also filled with graphite fibers accounting for 2.5wt% of the total mass of the magnesium alloy;

[0092] The surface of the magnesium alloy is subjected to pickling and activation treatment. According to the mass ratio, the formula of the pickling solution is:

[0093] Na 3 PO 4 12H 2 O 65%;

[0094] h 3 PO 4 20%;

[0095] KMnO 4 15%;

[0096] The duration of pickling activation treatment is 9min.

[0097] The graphite fiber has a diameter of 1 μm-5 μm, a length of 10 μm-1 mm, a tensile modulus of 600 GPa-800 GPa, and a tensile strength of 1.5 GPa-4.0 GPa.

[0098] Its preparation method comprises the following steps:

[0099] The first step is to preheat the melting furnace and preheat the crucible to 620°C;

[0100]The second step is to pass the protective g...

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Abstract

The invention belongs to the technical field of magnesium alloy and particularly relates to magnesium alloy for a notebook computer. The magnesium alloy for the notebook computer comprises the following components according to atomic percent: 2-8% of Al, 0.1-2% of Zn, 0.1-0.6% of Mn, 0.2-1.5% of Ce, 0.2-1.5% of Nd, 5-10% of Ca, 0.1-2% of Bi and the balance of Mg; the magnesium alloy is also filled with graphite fiber accounting for 1-5wt% of the total mass of the magnesium alloy; the surface of the magnesium alloy is subjected to pickling and activating treatment, and a pickling solution is prepared from the following components in mass ratio according to a formula: 50-75% of Na3PO4.12H2O, 15-25% of H3PO4 and 8-25% of KMnO4; and the pickling and activating treatment lasts for 1-10 min. Compared with the prior art, the magnesium alloy is relatively high in mechanical property and corrosion resistance and relatively low in inflammability.

Description

technical field [0001] The invention belongs to the technical field of magnesium alloys, in particular to a magnesium alloy for notebook computers. Background technique [0002] Magnesium alloy has low density and light weight, and its density is usually 1.75-1.90g / cm 3 It is the lightest metal structure material in industrial application at present; moreover, magnesium alloy has high specific strength and specific stiffness, good shock absorption performance, and its impact resistance is 10 times that of aluminum alloy and 20 times that of plastic. Magnesium alloys also have good casting properties, high dimensional stability (volume shrinkage is only 4%), high heat dissipation and regeneration. Therefore, the above advantages of magnesium alloys make it widely used in the automotive industry, and it has also been better used in electronic devices (such as mobile phones, notebook computers, digital cameras and video recorders). [0003] However, magnesium alloys also have...

Claims

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Application Information

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IPC IPC(8): C22C47/08C22C49/04C22C49/14C23G1/12C22C101/10
CPCC22C47/08C22C49/04C22C49/14C23G1/12
Inventor 唐冬娥李卫荣
Owner DONGGUAN EONTEC CO LTD
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