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High-heat-resistant nitride-based cermet mould and preparation method thereof

A technology of ceramic mold and nitride, which is applied in the field of high heat-resistant nitride-based cermet mold and its preparation, can solve the problems of low market share, achieve the effects of improving production efficiency, excellent thermal stability, and increasing service life

Inactive Publication Date: 2016-08-17
陆志强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High heat-resistant nitride-based cermet molds are rare in the domestic market, and those sold in a small amount and with good reputation are basically imported products, and the market share of domestic products is even less

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A high heat-resistant nitride-based cermet mold is made of the following raw materials in parts by weight: 70 parts of titanium nitride, 40 parts of aluminum nitride, 15 parts of nickel powder, 10 parts of realgar powder, 10 parts of dickite powder, magnetic 4 parts of hematite powder, 6 parts of germanium dioxide, 3 parts of potassium oxide, 3 parts of stainless steel powder, 3 parts of oleic acid.

[0015] The steps of the preparation method are as follows: first put all raw materials into a high-speed mixer, mix and stir them, then place the uniformly mixed mixture in a mold and press it into a preform, the pressing pressure is 40-50MPa, and then the preform High temperature sintering, the sintering temperature is 900-1200°C, the sintering time is 3-6h, and the temperature can be lowered to room temperature.

Embodiment 2

[0017] A high heat-resistant nitride-based cermet mold is made of the following raw materials in parts by weight: 80 parts of titanium nitride, 50 parts of aluminum nitride, 20 parts of nickel powder, 20 parts of realgar powder, 20 parts of dickite powder, magnetic 8 parts of hematite powder, 8 parts of germanium dioxide, 6 parts of potassium oxide, 11 parts of stainless steel powder, 5 parts of oleic acid.

[0018] The steps of the preparation method are as follows: first put all raw materials into a high-speed mixer, mix and stir them, then place the uniformly mixed mixture in a mold and press it into a preform, the pressing pressure is 40-50MPa, and then the preform High temperature sintering, the sintering temperature is 900-1200°C, the sintering time is 3-6h, and the temperature can be lowered to room temperature.

Embodiment 3

[0020] A high heat-resistant nitride-based cermet mold is made of the following raw materials in parts by weight: 75 parts of titanium nitride, 45 parts of aluminum nitride, 18 parts of nickel powder, 15 parts of realgar powder, 15 parts of dickite powder, magnetic 6 parts of hematite powder, 7 parts of germanium dioxide, 5 parts of potassium oxide, 7 parts of stainless steel powder, 4 parts of oleic acid.

[0021] The steps of the preparation method are as follows: first put all raw materials into a high-speed mixer, mix and stir them, then place the uniformly mixed mixture in a mold and press it into a preform, the pressing pressure is 40-50MPa, and then the preform High temperature sintering, the sintering temperature is 900-1200°C, the sintering time is 3-6h, and the temperature can be lowered to room temperature.

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Abstract

The invention discloses a high-heat-resistant nitride-based cermet mould and a preparation method thereof. The high-heat-resistant nitride-based cermet mould is prepared from, by weight, 70-80 parts of titanium nitride, 40-50 parts of aluminum nitride, 15-20 parts of nickel powder, 10-20 parts of realgar powder, 10-20 parts of dickite powder, 4-8 parts of maghemite, 6-8 parts of germanium dioxide, 3-6 parts of potassium oxide, 3-11 parts of stainless steel powder and 3-5 parts of oleic acid. The high-heat-resistant nitride-based cermet mould prepared according to the method has excellent heat stability, abrasion resistance, oxidation resistance and high temperature resistance. Compared with an existing cermet mould, the high-heat-resistant nitride-based cermet mould has advantages that the service life of the mould is remarkably prolonged, and the high-heat-resistant boride-based cermet mould can be better applied under severe conditions such as high temperature and high pressure and makes a prominent progress in reduction of processing cost, improvement of production efficiency and the like.

Description

technical field [0001] The invention specifically relates to a high heat-resistant nitride-based cermet mold and a preparation method thereof. Background technique [0002] Cermet English word cermet or ceramet is composed of ceramic (ceramic) and metal (metal). Cermet refers to the composite material of metal and ceramic prepared by powder metallurgy method. Cermet has the advantages of both metal and ceramic. It has low density, high hardness, wear resistance and good thermal conductivity. Brittle. Cermet not only has the toughness, high thermal conductivity and good thermal stability of metal, but also has the characteristics of high temperature resistance, corrosion resistance and wear resistance of ceramics. Cermets have broad application prospects in aerospace, national defense, precision manufacturing and other fields. Nitride-based cermets are based on titanium nitride, boron nitride, silicon nitride and tantalum nitride. They have superhardness, thermal shock res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/02C22C1/05B22F3/10
CPCC22C29/02B22F3/10B22F2998/10C22C1/051B22F1/0003B22F3/02
Inventor 陆志强
Owner 陆志强
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