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Multiple-phase ceramic material and method for manufacturing same

A technology of composite phase ceramics and manufacturing methods, which is applied in the field of ceramic materials, can solve the problems of high speed-up smoke, slow car speed-up, blade fracture and failure, etc., and achieve the goal of increasing compression ratio, reducing loose packing ratio, and improving consistency Effect

Active Publication Date: 2009-01-07
潍坊富源增压器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the supercharger turbine made of K418 nickel-based superalloy has great limitations:
[0007] 2) At high temperature and high speed, the turbine blades often fail to fly
[0008] 3) The turbine is heavy and the responsiveness is not good. The inertia of the impeller responds slowly to the sudden change of the throttle, and the turbine has a "lag response".
[0009] 4) The surface of nickel-based K418 alloy and other metal materials often accumulates carbon in blocks, and the dynamic balance is unstable under high-speed operation. In addition, the tiny carbon blocks that fall off hit the turbine blades at high speeds at extremely high speeds, causing the blades to break and fail.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) Ingredients

[0031] Weigh 50 parts of ZrO by weight 2 powder, 20 parts of TiAl powder, 20 parts of Al 2 o 3 Powder, 5 parts of Ti powder and 5 parts of Al powder constitute raw materials;

[0032] 2) Mixing and grinding

[0033] The raw materials are mixed and ground to obtain a mixed powder. Said mixing and grinding steps are carried out in a planetary mill.

[0034] Ball milling is the basic method used in mineral processing ceramics, and its main functions are particle size reduction, solid state alloying, mixing or fusion and changing the shape of ions. The planetary grinding machine is composed of a ball mill tank, a tank seat, a turntable, a fixed pulley and an electric motor. The working principle is: the planetary grinder is equipped with 4 ball milling pots on the turntable. When the turntable rotates, the ball milling pots make planetary motion around the same axis with the turntable, and the abrasives in the pots are ground and mixed in high-speed m...

Embodiment 2

[0053] It is basically the same as Example 1, the difference is:

[0054] When batching, the ratio of each component that constitutes the raw material is different, see Table 1;

[0055] When granulating, add a polyvinyl alcohol aqueous solution with a concentration of 20% as a plasticizer in a weight ratio equivalent to 5% of the mixed powder;

[0056] When stewing the material, the pellets were aged for 22 hours;

[0057] When molding, the molding pressure is 170MPa, and the holding time is 5 minutes;

[0058] During sintering, the sintering route is: 550°C → 1650°C → 1650°C, the heating rate is 160°C / hour, the heat preservation is 2h; the nitrogen atmosphere is 2MPa.

[0059] The performance parameters of the composite ceramic materials after sintering are shown in Table 2 and Table 3.

Embodiment 3

[0061] Basically the same as Example 1, the difference is that,

[0062] When batching, the ratio of each component that constitutes the raw material is different, see Table 1;

[0063] When granulating, add a polyvinyl alcohol aqueous solution with a concentration of 20% as a plasticizer in a weight ratio equivalent to 10% of the mixed powder;

[0064] When stewing the material, the pellets were aged for 16 hours;

[0065] When molding, the molding pressure is 190MPa, and the holding time is 6 minutes;

[0066] During sintering, the sintering route is: 550°C → 1700°C → 1700°C, the heating rate is 170°C / hour, the heat preservation is 2h; the nitrogen atmosphere is 2MPa.

[0067] The performance parameters of the composite ceramic materials after sintering are shown in Table 2 and Table 3.

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Abstract

The invention discloses a multiple phase ceramic material, which comprises the following steps: allocating mass ratio with 50-70% ZrO2, 10-20% TiAl, 10-20% Al2O3, 3-8% Ti and 3-8% Al; mixing; grinding; pelleting; profiling; clinkering; getting the product. This material possesses good property, low price, which can further improve fracture toughness property of the material. This invention adopts simple processing, which can possesses important strategic signification for diminish import of nickel.

Description

technical field [0001] The invention relates to the technical field of ceramic materials, in particular to a ceramic material suitable for turbocharger turbines, and also to a manufacturing method of the ceramic material. Background technique [0002] A turbocharger is actually an air compressor that compresses air to increase intake air. The inertial momentum of the exhaust gas discharged from the engine is used to drive the turbine in the turbine chamber, and the turbine drives the coaxial impeller, and the impeller presses the air sent by the air filter pipe to pressurize it into the cylinder. When the engine speed increases, the exhaust gas discharge speed and the turbine speed also increase synchronously, the impeller compresses more air into the cylinder, and the pressure and density of the air increase to burn more fuel. Increase the amount of fuel and adjust the engine speed accordingly. Thereby increasing the output power of the engine. [0003] The turbocharger i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/48C04B35/63C04B35/632C04B35/645
Inventor 王守仁刘恩来刘风虎徐作森陈良王新江
Owner 潍坊富源增压器有限公司
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