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Vanadium titanium carbide and production method thereof

A technology of titanium carbide vanadium and ceramic titanium carbide, applied in the field of metal ceramics, can solve problems such as hardness reduction, and achieve the effect of improving yield and reducing production cost

Inactive Publication Date: 2014-03-05
PANZHIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This has not taken into account the decrease in hardness caused by the addition of soft phase cobalt and iron

Method used

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  • Vanadium titanium carbide and production method thereof
  • Vanadium titanium carbide and production method thereof
  • Vanadium titanium carbide and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Take ammonium metavanadate (V 2 o 5 =76.0%, particle size 0.075-0.200mm) 59.5 grams, metal titanium powder (Ti=98.00wt%, particle size 0.075-2.000mm) 19.9 grams, graphite powder (C=99.0wt%, particle size 0.050-0.180mm) 20.7 grams, mixed and pressed to a density of 2.18g cm -3 of briquetting. Put the briquette into a 50ml aluminum oxide porcelain crucible, fill the remaining space in the porcelain crucible with 9.0g graphite powder, cover the top of the briquette with 9mm graphite powder, and then cover the aluminum oxide porcelain crucible Put it into a crucible made of silicon carbide, and the aluminum oxide porcelain crucible containing the sample accounts for 82% of the volume of the crucible made of silicon carbide on the outer layer. The space between the two crucibles is filled with coal powder, wherein the thickness of the coal powder covered on the top cover of the aluminum oxide porcelain crucible is 10mm. Put the double-layer tank into a muffle furnace for...

Embodiment 2

[0041] Take ammonium metavanadate (V 2 o 5 =75.8%, particle size 0.075~0.200mm) 59.5g, metal titanium powder (Ti=98.00wt%, particle size 0.075~2.000mm) 19.0g, graphite powder (C=99.0wt%, particle size 0.050~0.180mm) 20.7 grams, mixed and pressed to a density of 2.3g cm -3 of briquetting. Put the briquette into a 50ml alumina porcelain crucible, fill the remaining space in the porcelain crucible with 9.0g of high-purity carbon powder, cover the top of the briquette with 8.8mm graphite powder, and then cover the briquette The porcelain crucible is placed in a silicon carbide crucible, and the aluminum oxide porcelain crucible containing the sample accounts for 85% of the volume of the outer silicon carbide crucible. The space between the two crucibles is filled with coal powder, wherein the thickness of the coal powder covered on the top cover of the aluminum oxide porcelain crucible is 8 mm. Put this double-layer tank crucible into a muffle furnace for primary carbonization...

Embodiment 3

[0043] Take vanadium carbide powder (VC=99.9%, particle size 0.075-0.200mm) 37.4 grams, metal titanium powder (Ti=98.00wt%, particle size 0.075-2.000mm) 47.6 grams, graphite powder (C=99.0wt%, particle size 0.050 ~ 0.180mm) 14.9 grams, mixed and pressed to a density of 2.70g cm -3 of briquetting. Put it into a graphite crucible and carbonize it in a vacuum furnace. In a vacuum of 2.3×10 -2 Pa, heat at 1605°C for 2.60h, cool down to room temperature in vacuum, take out the furnace to obtain titanium carbide and vanadium reduction blocks, and then crush to obtain titanium carbide and vanadium powder. VC content 37.40wt%, TiC content 62.50wt%, C 游 Content 0.08wt%. The corresponding X-ray diffraction pattern is shown in Figure 4 .

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Abstract

The invention relates to a metal ceramic vanadium titanium carbide and a production method thereof, belonging to the field of metal ceramics. The first technical problem solved by the invention is as follows: a metal ceramic vanadium titanium carbide is provided, wherein the vanadium titanium carbide comprises the following components in percentage by weight: 28.40-77.80% of VC, 20.0-72.50% of TiC, 0.00-2.60% of C free, and the balance of inevitable impurities. The vanadium titanium carbide disclosed by the invention can be prepared by adopting two methods, and vanadium titanium carbide comprising 46.93-77.80% of VC, 20.0-52.50% of TiC, 0.57-2.20% of C free and the balance of inevitable impurities in percentage by weight and vanadium titanium carbide comprising 28.40-59.90% of VC, 37.50-72.50% of TiC, 0.00-2.60% of C free and the balance of inevitable impurities in percentage by weight are respectively obtained.

Description

technical field [0001] The invention relates to cermet titanium vanadium carbide and a production method thereof, belonging to the field of cermets. Background technique [0002] At present, the main application fields of VC and TiC are the preparation of matrix materials for cermets, reinforced high-speed steel, reinforced steel, etc. Titanium carbide (TiC) and vanadium carbide (VC or V 2 C) It has excellent chemical properties such as high hardness, anti-oxidation, corrosion resistance, small specific gravity, and good stability. Titanium carbide is often used as the matrix material of titanium carbide-based cermets, and vanadium carbide is added to titanium carbide-based cermets as an additive. [0003] Since the birth of tungsten carbide (WC)-based cemented carbide in the last century, WC has been the basic component of cemented carbide. Since the 1990s, my country's tungsten resources have been gradually exhausted, the cost of tungsten mining has risen, and the price...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/56C04B35/622
Inventor 方民宪许子路张雪峰范兴平邓刚孙青竹王勇李思艾冯瑶
Owner PANZHIHUA UNIV