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Preparation method of M6C type alloy carbide Fe3W3C

A carbide and alloy technology, which is applied in the field of preparation of M6C alloy carbide Fe3W3C, can solve the problems of difficult control and inaccurate performance, and achieve the effects of improving purity, accurate mechanical properties and accurate testing

Active Publication Date: 2017-10-03
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this method is that the three powders cannot be fully mixed evenly by ball milling, and the powders are prone to agglomeration, that is, the three powders cannot be fully contacted to participate in the reaction, and the Fe obtained by sintering 3 W 3 The purity of C is not high, and there are a large amount of Fe, W, and C, and its performance is not accurate enough; in addition, the proportion of the three powders and the sintering temperature will affect the reaction product and form Fe. 6 W 6 C.Fe 3 Other phases such as C are not easy to control, and the final performance is not accurate enough

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  • Preparation method of M6C type alloy carbide Fe3W3C
  • Preparation method of M6C type alloy carbide Fe3W3C

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Experimental program
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Embodiment 1

[0026] A kind of M described in this embodiment 6 C-type alloy carbide Fe 3 W 3 The preparation method of C specifically comprises the following steps:

[0027] (1) Weigh the reduced iron powder (purity 99.9%, particle size less than 150 μm) and WC powder (purity 99.9%, particle size less than 150 μm) respectively. The stoichiometric ratio of the two powders is Fe / WC=2:1.

[0028] (2) Powder mixing: use XQM-4L planetary ball mill to mix WC particles and sodium silicate (the mass is 2% of the mass of WC particles) evenly, and the duration of powder mixing is 0.5h, and then Fe powder and WC powder The mixed powder of sodium bicarbonate is mixed with balls, and the duration of powder mixing is 20h. The other conditions of the two ball milling processes are: the mass ratio of balls is 3:1, and the diameters of large and small grinding balls are 12mm and 7mm respectively. Steel balls, the ratio of the number of large grinding balls to small grinding balls is 1:5, and the speed o...

Embodiment 2

[0033] A kind of M described in this embodiment 6 C-type alloy carbide Fe 3 W 3 The preparation method of C specifically comprises the following steps:

[0034] (1) Weigh the reduced iron powder (purity 99.9%, particle size less than 150 μm) and WC powder (purity 99.9%, particle size less than 150 μm) respectively, the stoichiometric ratio of the two powders is Fe / WC=3:1.

[0035] (2) Powder mixing: XQM-4L planetary ball mill is used to mix WC particles and CMC-Na (the mass is 2.5% of the mass of WC particles) evenly. The duration of powder mixing is 1h, and then Fe powder and WC powder are mixed with CMC-Na The mixed powder of Na was mixed by ball milling, and the duration of the powder mixing was 30h. The other conditions of the two ball milling processes were: the mass ratio of the ball to material was 5:1, and the diameters of the large and small balls were 11mm and 8mm respectively. The ratio of the number of steel balls, large grinding balls and small grinding balls i...

Embodiment 3

[0040] A kind of M described in this embodiment 6 C-type alloy carbide Fe 3 W 3 The preparation method of C specifically comprises the following steps:

[0041] (1) Weigh the reduced iron powder (purity 99.9%, particle size less than 150 μm) and WC powder (purity 99.9%, particle size less than 150 μm) respectively, and the stoichiometric ratio of the two powders is Fe / WC=1:1.

[0042] (2) Powder mixing: XQM-4L planetary ball mill is used to mix WC granules and starch (the mass is 3% of the mass of WC granules) evenly, the duration of powder mixing is 1.5h, and then Fe powder, WC powder and starch are mixed The powder is mixed by ball milling, and the duration of the powder mixing is 50h. The other conditions of the two ball milling processes are: the mass ratio of the ball to material is 7:1, and the large and small grinding balls use steel balls with diameters of 10mm and 9mm respectively. The ratio of the number of large balls to small balls is 1:6, and the speed of the b...

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Abstract

The invention discloses a preparation method of M6C type alloy carbide Fe3W3C and belongs to the technical field of new materials. The method comprises the steps that Fe powder and WC powder are used as raw materials, and after the raw materials are uniformed mixed, sintering is conducted through a spark plasma sintering (SPS) and vacuum interface remelting method; then, after an obtained sintering sample is crushed, phase analysis is conducted; other impurity phases are removed through an acid pickling method, and deacidification treatment, drying treatment and the like are conducted on the powder; and then, sintering is conducted on the powder, so that a ternary carbide Fe3W3C material is finally obtained. The ternary phase carbide Fe3W3C prepared through the method contains few impurities; in addition, the preparation temperature is low; an obtained structure is uniform and good in mechanical performance; and great significance is achieved for researching microcosmic interfaces of tungsten-carbide-reinforced-steel (iron)-based composites.

Description

technical field [0001] The present invention relates to a M 6 C-type alloy carbide Fe 3 W 3 The preparation method of C belongs to the technical field of new materials. Background technique [0002] In the field of material processing, Fe 3 W 3 C ternary phase alloy carbides are found to be widely present in the interfaces of tungsten carbide reinforced high chromium cast iron, steel, high manganese steel and other composite materials obtained by various methods, and in the interfaces of WC-rich phase wear-resistant coatings and iron-based alloys or hard alloys. In the interface of the alloy, Fe 3 W 3 C has better mechanical properties than common hard phases. Fe 3 W 3 As the interfacial transition layer of tungsten carbide reinforced iron-based composite materials, C can make metallurgical bonding between the matrix and the reinforcing phase, and increase the interface strength. For example, using high energy ball milling + vacuum sintering to produce WC p / iron...

Claims

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Application Information

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IPC IPC(8): C22C1/05C22C29/06C04B35/56C04B35/65C04B35/622
CPCC22C1/058C22C29/06C04B35/56C04B35/622C04B35/65C04B2235/666C04B2235/6567C04B2235/658C04B2235/6581C04B2235/656C04B2235/6562C04B2235/405C04B2235/3847
Inventor 李祖来陈奉锐山泉蒋业华张亚峰王鹏飞
Owner KUNMING UNIV OF SCI & TECH
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