Preparation method of tungsten-nickel alloy provided with nitrogen, yttrium and zirconium hard coating

A technology of tungsten-nickel alloy and hard coating, which is applied in the field of alloy material manufacturing and can solve problems such as "nickel pool" and holes

Inactive Publication Date: 2018-07-03
QINGDAO XIANGZHI ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a method for preparing a tungsten-nickel alloy with a yttrium-zirconium nitride hard coating. The tungsten-nickel alloy prepared by the method solves the problems of "nickel pools" and holes that often occur in the preparation process of traditional fine-grained hard alloys. To im...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Prepare mixed powder according to the following weight components:

[0028] Tungsten carbide, 90.1%, Fischer particle size 0.8-1μm;

[0029] Nickel powder, 5%, Fischer particle size 0.5-1.0μm;

[0030] Chromium carbide, balance.

[0031] The mixed powder with the above ratio is wet-milled; the ball milling time is controlled in sections; firstly, the carbide powder and the additive chromium carbide are added to the ball mill barrel for wet milling for 12 hours, and then nickel powder is added for wet milling for 14 hours.

[0032] The ball milled mixture slurry was dried.

[0033] The dry mix is ​​pressed into compacts of the desired shape.

[0034] The pressed product is sintered at high temperature in a sintering furnace, the sintering temperature is 1450°C, the holding time is 70-90min, and the sintering pressure is 4.5Mpa to obtain a tungsten-nickel alloy matrix.

[0035] Substrate pretreatment. The substrate pretreatment may be followed by grinding and polishin...

Embodiment 2

[0039] Prepare mixed powder according to the following weight components:

[0040] Tungsten carbide, 92.8%, Fischer particle size 0.8-1μm;

[0041] Nickel powder, 6%, Fischer particle size 0.5-1.0μm;

[0042] Chromium carbide, balance.

[0043] The mixed powder with the above ratio is wet-milled; the ball milling time is controlled in sections; firstly, the carbide powder and the additive chromium carbide are added to the ball mill barrel for wet milling for 16 hours, and then nickel powder is added for wet milling for 18 hours.

[0044] The ball milled mixture slurry was dried.

[0045] The dry mix is ​​pressed into compacts of the desired shape.

[0046] The pressed product was sintered at high temperature in a sintering furnace, the sintering temperature was 1470°C, the holding time was 90min, and the sintering pressure was 5.0Mpa to obtain a tungsten-nickel alloy matrix.

[0047] Substrate pretreatment. The substrate pretreatment may be followed by grinding and polishi...

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PUM

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Abstract

The invention discloses a preparation method of a tungsten-nickel alloy provided with a nitrogen, yttrium and zirconium hard coating. The tungsten-nickel alloy prepared by adopting the preparation method can be used for solving the problems of a 'nickel pool' and holes which frequently appear in the traditional fine grain hard alloy preparation process, so as to improve overall performance of thealloy, a direct current and radio frequency reactive co-sputtering method is adopted, and a high-hardness nitrogen, yttrium and zirconium coating is prepared on the surface of a hard alloy matrix by controlling power of a target Y at certain deposition pressure intensity, temperature and nitrogen partial pressure.

Description

technical field [0001] The invention relates to the field of alloy material manufacturing, in particular to a method for preparing a tungsten-nickel alloy with a yttrium-zirconium nitride hard coating. Background technique [0002] Cemented carbide has the characteristics of high strength, high hardness, excellent wear resistance, heat resistance and good corrosion resistance, so it is widely used in high pressure, high speed, high temperature, corrosive media and other working environments [0003] WC-Ni cemented carbide has the characteristics of high strength, high hardness, excellent wear resistance, heat resistance and good corrosion resistance, so it is widely used in high pressure, high speed, high temperature, corrosive medium and other working environments. Since Ni belongs to the face-centered cubic (F.c.c) crystal system, it has good plasticity and is prone to plastic deformation during wet grinding to form flaky Ni powder clusters. The industrial production of c...

Claims

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Application Information

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IPC IPC(8): C22C29/08C22C1/05C22C1/10C23C14/34C23C14/06
CPCC22C29/08C22C1/051C22C29/067C22C2204/00C23C14/0641C23C14/3464
Inventor 不公告发明人
Owner QINGDAO XIANGZHI ELECTRONICS TECH CO LTD
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