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A two-step process for preparing SIC-reinforced dissolvable aluminum alloy materials

An aluminum alloy material and process technology, which is applied in the field of preparing SiC reinforced dissolvable aluminum alloy materials by a two-step method, can solve the problems of poor wettability, weak interfacial bonding force, and large SiC particle size, and achieves thermodynamic stability, good bonding, and improvement. The effect of combined conditions

Active Publication Date: 2018-06-29
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method of SiC reinforced metal matrix composites is to add SiC particles, the size of SiC particles is too large (50-100μm), the wettability between the SiC matrix and the aluminum matrix is ​​poor, resulting in weak interfacial bonding between the two, and the surface of SiC particles needs to be pretreated, etc. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The first step; preparation of aluminum-based SiC reinforcement

[0024] Step 1: Preparation of aluminum-based in-situ reaction briquettes

[0025] 12.05wt.% of carbon powder, 33.73wt.% of silicon powder, and 54.22wt.% of aluminum powder are used as raw materials, and the ingredients are prepared under the protection of Ar gas in the glove box, and placed in a ball mill tank for ball milling for 12 hours; take out the above ball milled powder Material, powder passed through a 120-mesh sieve; cold-pressed on a hydraulic press with a pressure of 70 MPa, and held for 5 minutes to obtain a briquette;

[0026] Step 2: Sintering in a vacuum hot-press furnace

[0027] Sinter the briquette prepared in step 1 in a vacuum hot-press furnace, pressurize when the temperature rises to 400°C, the pressure is 20MPa, and the pressure increase rate is 2MPa / 10min; when the temperature is raised to 1000°C, the heating rate is 6°C / min After 1.5 hours, take out the material after cooling t...

Embodiment 2

[0034] The first step; preparation of aluminum-based SiC reinforcement

[0035] Step 1: Preparation of aluminum-based in-situ reaction briquettes

[0036] 2wt.% of carbon powder, 12wt.% of silicon powder, and 86wt.% of aluminum powder are used as raw materials, and the ingredients are prepared under the protection of Ar gas in the glove box, and placed in a ball mill jar for ball milling for 10 hours; take out the above ball milled powder, powder The material is passed through a 120-mesh sieve; it is cold-pressed on a hydraulic press with a pressure of 60 MPa and kept for 5 minutes;

[0037] Step 2: Sintering in a vacuum hot-press furnace

[0038] Sinter the briquette prepared in step 1 in a vacuum hot-press furnace, pressurize when the temperature rises to 300°C, the pressure is 20MPa, and the pressure increase rate is 2MPa / 10min; when the temperature is raised to 1000°C, the heating rate is 4°C / min After 1 hour, the material was taken out after cooling to room temperature ...

Embodiment 3

[0045] The first step; preparation of aluminum-based SiC reinforcement

[0046] Step 1: Preparation of aluminum-based in-situ reaction briquettes

[0047] 18.33wt.% of carbon powder, 35.25wt.% of silicon powder, and 46.42wt.% of aluminum powder were used as raw materials, and the ingredients were prepared under the protection of Ar gas in the glove box, and placed in a ball mill tank for ball milling for 18 hours; the above ball milled powder was taken out Material, powder passed through a 120-mesh sieve; cold-pressed on a hydraulic press with a pressure of 120MPa and held for 10 minutes;

[0048]Step 2: Sintering in a vacuum hot-press furnace

[0049] Sinter the briquette prepared in step 1 in a vacuum hot-press furnace, pressurize when the temperature rises to 550°C, the pressure is 30MPa, and the pressure increase rate is 2MPa / 10min; when the temperature is raised to 1250°C, the heating rate is 6°C / min After 2 hours, the material was taken out after cooling to room temper...

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Abstract

A two-step process for preparing SiC-reinforced dissolvable aluminum alloy materials. The first step is to obtain aluminum-based SiC particles by sintering in a vacuum hot-press furnace by an in-situ synthesis method; Adding 60-90wt% of aluminum base, prefabricated alloy and 2-30vol% of aluminum-based SiC reinforcement prepared in the first step to obtain a soluble aluminum alloy material; the invention has excellent mechanical properties and chemical stability.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy material preparation, in particular to a two-step process for preparing SiC reinforced soluble aluminum alloy material. Background technique [0002] A large number of downhole tools are used in the process of oil and natural gas extraction, such as packers, hand tools, bridge plugs, fracturing balls, etc. The ideal situation is that these tools can meet the basic requirements during the use and storage period. Application performance requirements, and it can dissolve quickly after failure without recycling, keeping the wellbore unblocked, which will avoid the waste of resources during tool recycling, and greatly improve the speed of project progress. In addition, some tools must work under high temperature and high pressure conditions, which requires them not only to be soluble, but also to have excellent mechanical properties to meet certain strength requirements. Therefore, developing a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/10C22C1/03C22C21/00C22C32/00
CPCC22C1/1036C22C1/1084C22C21/00C22C32/0063C22C1/1047
Inventor 秦毅苟永妮朱建锋侯小江李文君方园彭敏王芬
Owner SHAANXI UNIV OF SCI & TECH