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In-situ synthesis process for preparing complex-phase TiN/O'-sialon material

An in-situ synthesis and raw material technology, applied in the field of new ceramic materials, can solve the problems of different particle sizes of TiN, complex synthesis procedures, and high cost of TiN, and achieve the effects of high resistance to air oxidation, low thermal diffusivity, and uniform distribution.

Inactive Publication Date: 2003-07-09
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is easy to cause defects such as uneven particle size, uneven distribution, and poor compatibility with the base phase of TiN as the reinforcing phase.
In addition, the cost of TiN is also high, and the synthesis process is complicated

Method used

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Embodiment Construction

[0029]

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Abstract

An in-situ synthesis process for preparing complex-phase TiN / O'-Sialon material features that the cheap TiO2 is used as the reinforcing phase, which reacts on other raw materials in clacination procedure to self-grow TiN in situ, and the complex-phase TiN / O'-Sialon material is synthesized by one step. Its technological steps include sieving, precalcining, proportioning, wet grinding, ultrasonic vibration, drying, die pressing, isostatic pressure shaping and high-temp. calcining. Its advantages include excellent comprehensive performance, uniformly distributed small TiN particles having good compatibility with base phase, low cost and simple process.

Description

Technical field [0001] The invention belongs to the field of novel ceramic materials. Background technique [0002] At present, there is no report of TiN composite O'-Sialon. The composite of TiN and other materials is mostly mechanical mixing, that is, the pre-prepared TiN powder is directly mixed with other material powders to form a multi-phase ceramic material. This is likely to cause defects such as uneven particle size, uneven distribution, and poor compatibility with the base phase of TiN as a reinforcing phase. In addition, the cost of TiN is also high, and the synthesis process is complicated. Contents of the invention [0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a preparation method for in-situ synthesis of TiN / O'-Sialon composite material, so that the in-situ self-generated TiN particles are small, uniformly distributed, and have good compatibility with the base phase ; Reduce the cost of synthesizin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/599C04B35/622
Inventor 薛向欣谢朋翟玉春杨建段培宁
Owner NORTHEASTERN UNIV
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