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Carbon fiber reinforced alloy composite and preparation method thereof

A composite material and carbon fiber technology, which is applied in the direction of mechanical equipment, rigid pipes, pipes/pipe joints/fittings, etc., can solve problems such as high-temperature corrosion resistance and oxidation resistance that cannot be satisfied

Active Publication Date: 2018-06-22
GUANGDONG ELECTRIC POWER SCI RES INST ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides a carbon fiber-reinforced alloy composite material and a preparation method thereof, which are used to solve the problem that the high-temperature corrosion resistance and oxidation resistance of the current boiler superheater pipe material cannot meet the requirements of my country's biomass power station pipe material

Method used

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  • Carbon fiber reinforced alloy composite and preparation method thereof
  • Carbon fiber reinforced alloy composite and preparation method thereof
  • Carbon fiber reinforced alloy composite and preparation method thereof

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preparation example Construction

[0052] The present invention also provides a method for preparing a carbon fiber reinforced alloy composite material according to the above technical solution, including:

[0053] a) melting the alloy in vacuum to obtain a melt;

[0054] b) Adding carbon fiber into the melt by hot extrusion to obtain a carbon fiber reinforced alloy composite material.

[0055] In the present invention, the temperature of step a) vacuum smelting is 1100-1600°C;

[0056] The vacuum degree of step a) vacuum smelting is 40-60Pa.

[0057] Step b) The mass ratio of the melt to the carbon fiber is 0.02%-0.08%.

[0058] In the present invention, the addition of elements such as Cr and Mo in the alloy can use a master alloy. Vacuum smelting is specifically vacuum induction smelting. Step b) adding carbon fibers to the melt and adopting a hot extrusion process to obtain a carbon fiber reinforced alloy composite material. The alloy is subjected to hot processing, cold processing and annealing in seque...

Embodiment 1

[0063] Weigh 707.94g pure iron ingot, 212.2g chromium ingot and 1.8g molybdenum alloy, 10g pure aluminum ingot, 50g pure nickel ingot, 5g pure titanium ingot, 5g pure niobium ingot, 3g silicon nitride (Si 3 N 4 ), 0.2g pure cobalt, 0.2g pure copper block, 0.1g pure silicon powder and 4.06g rare earth (including 0.5g neodymium, 0.01g lanthanum, 0.05g praseodymium, 0.5g yttrium, 3g vanadium), prepare materials.

[0064] The metal raw materials in the preparation are smelted, and the smelting method is vacuum induction smelting. After the metal raw materials are put into the furnace, vacuum the entire furnace to ensure that the smelting process is carried out under vacuum; heat the furnace temperature to the range of 1100-1600 °C, and stir properly to ensure that all the metal raw materials are melted and the components are evenly distributed; it should be noted that it can be According to the performance of each metal, the method of adding in batches is adopted to reduce the pr...

Embodiment 2

[0067] The carbon fiber reinforced alloy composite material prepared in Example 1 is carried out microscopic detection, such as figure 1 Shown is the metallographic micrograph of the carbon fiber reinforced alloy composite material prepared in Example 1 of the present invention.

[0068] Depend on figure 1 It can be seen that although the carbon fiber reinforced alloy composite material of the present invention adds more element types and higher element content, resulting in more substructures in the structure, it is still a ferritic alloy. Due to the addition of Nb and Ti, the carbon fiber reinforced alloy composite material of the present invention has a refined structure, which shows that the carbon fiber reinforced alloy composite material of the present invention has good mechanical properties. Chromium is the most basic element of heat-resistant steel, and can form a dense oxide film, so that the carbon fiber reinforced alloy composite material of the present invention ...

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Abstract

The invention belongs to the field of metal materials, particularly relates to a carbon fiber reinforced alloy composite and a preparation method thereof, and provides the carbon fiber reinforced alloy composite. The carbon fiber reinforced alloy composite is prepared by adopting alloy as a matrix and adopting carbon fibers for reinforcement. The alloy comprises, by mass, 20-22% of Cr, 0.5-2% of Al, 2-8% of Ni, 0.02-0.08% of C, 0.2-0.8% of Ti, 0.2-0.8% of Nb and the balance Fe. High temperature corrosion dynamic tests and high temperature oxidation dynamic tests show that the weight increase change of the carbon fiber reinforced alloy composite is mainly concentrated in the range of 1.3-2.9 mg / cm<2>, and the carbon fiber reinforced alloy composite has high temperature potassium chloride corrosion resistance which is obvious better than that of commercial metal products such as TP316.

Description

technical field [0001] The invention belongs to the field of metal materials, in particular to a carbon fiber reinforced alloy composite material and a preparation method thereof. Background technique [0002] Renewable and pollution-free biomass fuel is one of the development directions of green renewable energy in the future and has broad development prospects. Compared with coal-fired power generation, biomass combustion power generation requires higher corrosion resistance of power plant boiler superheating tubes and other equipment, that is, it requires the ability to resist high-temperature corrosion of potassium, chlorine, salts and alkaline substances. At present, the commonly used alloy materials for domestic boiler superheater pipes are TP91, 304 stainless steel, etc. The application occasions of T91 include high re-exit header, superheater outlet safety valve pipe section, high-pass pipe, screen-pass pipe, high-reflow pipe and high-pass outlet Conduit; 15CrMo app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C49/08C22C49/14C22C47/12F16L9/02C22C101/10
CPCC22C47/12C22C49/08C22C49/14F16L9/02
Inventor 张宏亮陈天生范圣平陈刚
Owner GUANGDONG ELECTRIC POWER SCI RES INST ENERGY TECH CO LTD
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