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Special toughened high-temperature-resistant ceramic for fuel engine cylinder liners and preparation method thereof

A technology of special ceramics and high temperature resistance, which is applied in the field of toughening and high temperature resistant special ceramics and its preparation. It can solve the problems of fragility and low heat resistance temperature, reduce temperature and difficulty, increase heat resistance and toughening performance Effect

Active Publication Date: 2015-02-25
南通拓创光电材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional heat-resistant ceramics generally have low heat-resistant temperature and are fragile

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A toughened and high-temperature-resistant special ceramic used for the inner lining of a fuel engine cylinder. The special ceramic is composed of the following raw materials (kg): anorthite 42, kyanite 24, zircon 38, bauxite 22 , magnesium oxide 16, molybdenum disilicide 13, lanthanum oxide 2, silicon nitride 10, ferric oxide 5, hafnium boride 4, calcium oxide 11, thorium oxide 1, sorbitol 5, sodium oleate 2, triiso Propanolamine 4, sodium carboxymethyl inulin 3, water glass 10, polyvinyl acetate 8, hydroxypropyl distarch phosphate 3, appropriate amount of deionized water.

[0017] A method for preparing a toughened and high-temperature-resistant special ceramic used for the inner liner of a fuel engine cylinder, comprising the following steps:

[0018] (1) Mix anorthite, bauxite, magnesium oxide, silicon nitride, lanthanum oxide, and ferric oxide evenly, pulverize them, pass through a 500-mesh sieve, mix evenly with sorbitol and sodium oleate, and mill at a high speed...

Embodiment 2

[0026] A toughened and high-temperature-resistant special ceramic used for the inner lining of a fuel engine cylinder. The special ceramic is composed of the following raw materials (kg): anorthite 48, kyanite 32, zircon 44, bauxite 28 , magnesium oxide 18, molybdenum disilicide 16, lanthanum oxide 3, silicon nitride 12, ferric oxide 8, hafnium boride 5, calcium oxide 15, thorium oxide 2, sorbitol 6, sodium oleate 3, triiso Propanolamine 5, sodium carboxymethyl inulin 4, water glass 12, polyvinyl acetate 12, hydroxypropyl distarch phosphate 4, appropriate amount of deionized water.

[0027] A method for preparing a toughened and high-temperature-resistant special ceramic used for the inner liner of a fuel engine cylinder, comprising the following steps:

[0028] (1) Mix anorthite, bauxite, magnesia, silicon nitride, lanthanum oxide, and ferric oxide evenly, pulverize, pass through a 700 mesh sieve, mix evenly with sorbitol and sodium oleate, and mill at a high speed of 7500rpm...

Embodiment 3

[0036] A toughened and high-temperature-resistant special ceramic used for the inner lining of a fuel engine cylinder. The special ceramic is composed of raw materials with the following weight (kg): anorthite 54, kyanite 36, zircon 49, bauxite 34 , magnesium oxide 22, molybdenum disilicide 19, lanthanum oxide 4, silicon nitride 15, ferric oxide 10, hafnium boride 7, calcium oxide 17, thorium oxide 3, sorbitol 8, sodium oleate 4, triiso Propanolamine 7, sodium carboxymethyl inulin 5, water glass 15, polyvinyl acetate 14, hydroxypropyl distarch phosphate 6, appropriate amount of deionized water.

[0037] A method for preparing a toughened and high-temperature-resistant special ceramic used for the inner liner of a fuel engine cylinder, comprising the following steps:

[0038] (1) Mix anorthite, bauxite, magnesium oxide, silicon nitride, lanthanum oxide, and ferric oxide evenly, pulverize them, pass through an 800-mesh sieve, mix evenly with sorbitol and sodium oleate, and mill ...

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Abstract

The invention discloses a special toughened high-temperature-resistant ceramic for fuel engine cylinder liners and a preparation method thereof. The special ceramic is prepared from the following raw materials in parts by weight: 42-54 parts of anorthite, 24-36 parts of kyanite, 38-49 parts of zirconite, 22-34 parts of bauxite, 16-22 parts of magnesium oxide, 13-19 parts of molybdenum disilicide, 2-4 parts of lanthanum oxide, 10-15 parts of silicon nitride, 5-10 parts of ferric oxide, 4-7 parts of hafnium boride, 11-17 parts of calcium oxide, 1-3 parts of thorium oxide, 5-8 parts of sorbitol, 2-4 parts of sodium oleate, 4-7 parts of triisopropanolamine, 3-5 parts of carboxymethyl alantin sodium, 10-15 parts of water glass, 8-14 parts of polyvinyl acetate, 3-6 parts of hydroxypropyl distarch phosphate and a right amount of deionized water. The molybdenum disilicide, silicon nitride, hafnium boride and sintering technique are adopted to enhance the heat resistance and toughening performance of the ceramic; abundant stable lanthanum oxide, calcium oxide and thorium oxide stabilizers are utilized to lower the sintering temperature and difficulty; and by using the stabilizers, the high-temperature resistance is up to 2000-2500 DEG C, the high-temperature resistance time is up to 760-850 hours, the toughness KIc is 4-6, and the folding strength is 400-600 MPa.

Description

technical field [0001] The invention relates to a special ceramic product, in particular to a toughened and high-temperature-resistant special ceramic used for the inner lining of a fuel engine cylinder and a preparation method thereof. Background technique [0002] New technology fields such as aerospace, nuclear industry, new energy, national defense and military industry are in urgent need of a large number of new materials. Special ceramics have excellent heat resistance, dielectric properties, wear resistance, heat insulation properties, piezoelectric properties, The light transmission performance has been widely valued by various countries. Heat-resistant ceramics are one of the important branches. Traditional heat-resistant ceramics generally have low heat-resistant temperature and are fragile. Therefore, there is an urgent need to improve it, enhance its toughness, make it more widely used, and have stronger practicability. Contents of the invention [0003] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/16C04B35/622
Inventor 倪娟形
Owner 南通拓创光电材料科技有限公司
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