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Aluminum oxide base metal ceramic nozzle material and preparation method thereof

A ceramic nozzle and metal ceramic technology, which is applied in the field of ceramic materials to achieve the effects of low cost, good wettability and lower sintering temperature

Active Publication Date: 2014-01-01
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, related studies have focused on the Cr 3 C 2 And Ni, Cr as a spraying material for metal and alloy surface modification, has made some progress, and the Cr 3 C 2 Synergistic with Ni, Cr as Al 2 o 3 The reinforcement and toughening body of ceramics, the preparation of nozzle materials has not been reported

Method used

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  • Aluminum oxide base metal ceramic nozzle material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of alumina-based cermet nozzle materials:

[0027] Take an appropriate amount of Ni and Cr powder and put them into a planetary ball mill tank for mechanical alloying, wherein the mass percentage of Ni is 35%, using high-purity alumina balls, the ball milling medium is absolute ethanol, the ball-to-material ratio is 5:1, and the speed is 400r / min, the ball milling time is 20 hours, then take out the slurry and put it in a vacuum oven to dry at 60°C for 24 hours; 3 C 2 NiCr powder and NiCr alloy powder were put into a ball mill and mixed for 4 hours, and the mass percentage of NiCr was 25%; they were taken out and filled in a corundum crucible, and then the filled crucible surface was sealed and then put into a vacuum microwave heating furnace. Heating and heat preservation, the heating temperature is controlled at 1000°C, the entire time of heating and heat preservation is 30 minutes, and the vacuum degree is 1.3×10 -2 Pa, figure 1 For the EDS element an...

Embodiment 2

[0030] Preparation of alumina-based cermet nozzle materials:

[0031] Take an appropriate amount of Ni and Cr powder and put them into a planetary ball mill tank for mechanical alloying, wherein the mass percentage of Ni is 45%, using high-purity alumina balls, the ball milling medium is absolute ethanol, the ball-to-material ratio is 5:1, and the speed is 400r / min, the ball milling time is 20 hours, then take out the slurry and put it in a vacuum oven to dry at 60°C for 24 hours; 3 C 2 NiCr powder and NiCr alloy powder were put into a ball mill and mixed for 4 hours, in which NiCr accounted for 20% by mass; they were taken out and filled in a corundum crucible, and then the filled crucible surface was sealed and then put into a vacuum microwave heating furnace. Heating and heat preservation, the heating temperature is controlled at 1000°C, the entire time of heating and heat preservation is 30 minutes, and the vacuum degree is 1.3×10 -2 Pa; then the above mixed powder with...

Embodiment 3

[0034] Preparation of alumina-based cermet nozzle materials:

[0035] Take an appropriate amount of Ni and Cr powder and put them into a planetary ball mill tank for mechanical alloying, wherein the mass percentage of Ni is 50%, using high-purity alumina balls, the ball milling medium is absolute ethanol, the ball-to-material ratio is 5:1, and the speed is 400r / min, the ball milling time is 20 hours, then take out the slurry and put it in a vacuum oven to dry at 60°C for 24 hours; 3 C 2 NiCr powder and NiCr alloy powder were put into a ball mill and mixed for 4 hours, and the mass percentage of NiCr was 15%; they were taken out and filled in a corundum crucible, and then the filled crucible surface was sealed and then put into a vacuum microwave heating furnace. Heating and heat preservation, the heating temperature is controlled at 1000°C, the entire time of heating and heat preservation is 30 minutes, and the vacuum degree is 1.3×10 -2 Pa; then the above mixed powder with...

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Abstract

The invention discloses an aluminum oxide base metal ceramic nozzle material and a preparation method thereof. The ceramic nozzle material is prepared by taking alpha-Al2O3 ceramic as a base, adding Cr3C2 and NiCr as reinforced toughening phases and performing mechanical alloying, microwave presintering and hot pressed sintering. The ceramic nozzle material comprises the following components in percentage by volume: 5-30% of Cr3C2-NiCr and 70-95% of alpha-Al2O3, wherein the Cr3C2-NiCr is mixed powder of Cr3C2 powder and NiCr alloy powder; in the mixed powder, the mass percent of the NiCr alloy powder is 15-25%; and in the NiCr alloy powder, the mass percent of Ni is 33-50%. By combining mechanical alloying and microwave presintering, the prepared nozzle material has fine property and favorable applicability; the raw materials are cheap, accessible and abundant in reserves; and the preparation process is reliable in principle and simple to operate, and has broad market prospects.

Description

technical field [0001] The invention relates to a cermet nozzle material and a preparation method thereof in the field of ceramic materials. Background technique [0002] In the process of oil drilling and geological drilling, in order to obtain underground resources, it is necessary to impact, shear and break rocks in large quantities, and drill through formations. The drill bit is currently the main tool for breaking rock and forming a wellbore. Due to the different properties of the rocks in the formation and the different drilling purposes and requirements, different types of drill tools are used in the drilling process. Among them, the tri-cone bit is the most widely used bit, which can adapt to various complex formations such as soft, medium and hard. The inside of the cone of the roller cone bit is equipped with nozzle parts. The inner holes of these nozzles are where the drilling fluid must pass. The drilling fluid passes through the inner holes of the nozzles to c...

Claims

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Application Information

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IPC IPC(8): C22C29/12C22C1/05
Inventor 张进薛屺董朋朋高加明杨万桃陈军君
Owner SOUTHWEST PETROLEUM UNIV
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