Preparation method of SiCN(O)ceramic material

Abstract

The invention relates to a SiCN(O)ceramic material and a preparation method thereof, and solves the problems that existing SiCN(O)ceramic materials taking chloro-silicane as raw materials have complex technology and rigor manufacturing condition, and are easy to cause pollution during the manufacturing process. The SiCN(O)ceramic material comprises a nitrogen source, solvent and a silicon source.The method comprises that firstly, weighing raw materials, secondly, reacting the raw materials and obtaining resultant, thirdly, manufacturing a SiCN(O) precursor, fourthly, cracking, and cooling the pioneer body along a furnace to the room temperature, namely obtaining the SiCN(O)ceramic materials. The manufacturing method of the invention has moderate reacting conditions, has low requirements to the manufacturing conditions, has simple manufacturing process, can not generate polluted materials during the manufacturing process, and can not cause pollution.

Description

technical field

[0001] The invention relates to a preparation method of a ceramic material. Background technique

[0002] SiCN(O) ceramic material itself has high thermal stability, oxidation resistance and creep resistance, and can not crystallize, decompose, or oxidize below 1400°C, and has very excellent high-temperature performance. In the past 20 years It has become a hot spot in the research of high-temperature oxidation-resistant ceramics in recent years.

[0003] Due to the above-mentioned advantages, this material has a very wide application prospect. How to prepare this material in large quantities has always been the main problem explored by scientists.

[0004] The traditional preparation method of SiCN(O) ceramic material is to use chlorosilane as raw material. Due to the characteristics of chlorosilane itself, the synthesis conditions required by this method are very harsh, and the gas nitrogen source is easy to leak, causing pollution. During the reaction pro...

Examples

specific Embodiment approach 1

[0010] Embodiment 1: In this embodiment, the SiCN(O) ceramic material is made of 20-30 parts of nitrogen source, 90-110 parts of solvent and 12-18 parts of silicon source in terms of parts by weight.

[0011] The SiCN(O) ceramic material of this embodiment can be used for a long time without crystallization and decomposition under the condition of 1000-1400° C., and has excellent oxidation resistance.

specific Embodiment approach 2

[0012] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the SiCN(O) ceramic material consists of 22-28 parts of nitrogen source, 92-108 parts of solvent and 14-16 parts of silicon source according to the ratio of parts by weight. production. Others are the same as in the first embodiment.

[0013] The SiCN(O) ceramic material of this embodiment can be used for a long time without crystallization and decomposition under the condition of 1100-1400° C., and has excellent oxidation resistance.

specific Embodiment approach 3

[0014] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the SiCN(O) ceramic material is made of 24.5 parts of nitrogen source, 100 parts of solvent and 15 parts of silicon source in terms of parts by weight. Others are the same as in the first embodiment.

[0015] The SiCN(O) ceramic material of this embodiment can be used for a long time without crystallization and decomposition under the condition of 1200-1400° C., and has excellent oxidation resistance.

technical field

[0001] The invention relates to a preparation method of a ceramic material. Background technique

[0002] SiCN(O) ceramic material itself has high thermal stability, oxidation resistance and creep resistance, and can not crystallize, decompose, or oxidize below 1400°C, and has very excellent high-temperature performance. In the past 20 years It has become a hot spot in the research of high-temperature oxidation-resistant ceramics in recent years.

[0003] Due to the above-mentioned advantages, this material has a very wide application prospect. How to prepare this material in large quantities has always been the main problem explored by scientists.

[0004] The traditional preparation method of SiCN(O) ceramic material is to use chlorosilane as raw material. Due to the characteristics of chlorosilane itself, the synthesis conditions required by this method are very harsh, and the gas nitrogen source is easy to leak, causing pollution. During the reaction pro...

Examples

specific Embodiment approach 1

[0010] Embodiment 1: In this embodiment, the SiCN(O) ceramic material is made of 20-30 parts of nitrogen source, 90-110 parts of solvent and 12-18 parts of silicon source in terms of parts by weight.

[0011] The SiCN(O) ceramic material of this embodiment can be used for a long time without crystallization and decomposition under the condition of 1000-1400° C., and has excellent oxidation resistance.

specific Embodiment approach 2

[0012] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the SiCN(O) ceramic material consists of 22-28 parts of nitrogen source, 92-108 parts of solvent and 14-16 parts of silicon source according to the ratio of parts by weight. production. Others are the same as in the first embodiment.

[0013] The SiCN(O) ceramic material of this embodiment can be used for a long time without crystallization and decomposition under the condition of 1100-1400° C., and has excellent oxidation resistance.

specific Embodiment approach 3

[0014] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the SiCN(O) ceramic material is made of 24.5 parts of nitrogen source, 100 parts of solvent and 15 parts of silicon source in terms of parts by weight. Others are the same as in the first embodiment.

[0015] The SiCN(O) ceramic material of this embodiment can be used for a long time without crystallization and decomposition under the condition of 1200-1400° C., and has excellent oxidation resistance.