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Method for preparing SiCp enhanced AZ91D composite material blank

A composite material and billet technology is applied in the field of preparation of SiCp reinforced AZ91D composite material billets to achieve the effects of excellent and reliable billet quality, stable and efficient process, and easy large-scale production.

Inactive Publication Date: 2012-10-17
NO 59 RES INST OF CHINA ORDNANCE IND
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the low hardness, low strength, low modulus, low wear resistance and high thermal expansion coefficient of magnesium alloy limit its wide application.

Method used

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  • Method for preparing SiCp enhanced AZ91D composite material blank
  • Method for preparing SiCp enhanced AZ91D composite material blank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0047] Embodiment, the present embodiment uses SiC that the volume fraction is 50% p (Particle size 5μm) reinforced AZ91D composite material blank (diameter Φ60mm) as the object, follow the steps below:

[0048] First, prepare the aluminum phosphate high temperature binder.

[0049] Specifically include the following steps:

[0050] The first step is to weigh the powdered aluminum hydroxide Al(OH) according to the atomic ratio of Al and P: 1:23 3 And 85% concentration of industrial phosphoric acid (H 3 PO 4 ), mixed into a suspension in a mixing vessel;

[0051] In the second step, heat the suspension to 150°C and keep it warm, stirring while heating until the Al(OH) 3 The powder is all dissolved to obtain aluminum phosphate (Al(PO 3 ) 3 ) solution;

[0052] The third step is to weigh and mix the aluminum phosphate solution and water at a volume ratio of 1:15 to obtain an aluminum phosphate binder with high-temperature bonding effect.

[0053] Next, wet molding is use...

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Abstract

The invention provides a method for preparing a SiCp enhanced AZ91D composite material blank. The method comprises the following steps of: preparing a high-temperature binding agent; preparing a SiC particle precast block by adopting a wet method; drying and sintering the precast block; and extruding and impregnating to obtain the SiCp enhanced AZ91D composite material blank. The method for preparing the SiCp enhanced AZ91D magnesium-based composite material has the advantages of high automatic degree, stable and efficient process flow, excellent and reliable quality of blank and convenience for realizing scale production.

Description

Technical field: [0001] The present invention relates to a SiC p The invention discloses a method for preparing a reinforced AZ91D composite blank, belonging to the technical field of light alloy processing and forming. [0002] Background technique: [0003] In recent years, the call for saving energy and reducing environmental pollution is getting higher and higher. An effective way to solve this problem is to use light and high-efficiency materials. Magnesium and its alloys are the most promising high-tech industries facing the 21st century. One of the most widely used metal materials. However, the low hardness, low strength, low modulus, low wear resistance and high thermal expansion coefficient of magnesium alloy limit its wide application. [0004] Particle-reinforced magnesium-based composites eliminate or alleviate these shortcomings of magnesium alloys. They have the advantages of simple manufacturing process, low cost, easy processing and molding, and isotropi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/14
Inventor 陈强赵高瞻万元元陶健全苏志权邓天泉孙昌建
Owner NO 59 RES INST OF CHINA ORDNANCE IND
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