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Polycrystalline material, bodies comprising same, tools comprising same and method for making same

A technology for polycrystalline materials, the main body, applied in the direction of polycrystalline material growth, metal material coating process, nanotechnology for materials and surface science, etc.

Inactive Publication Date: 2015-04-01
ELEMENT SIX LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the above public information, it is impossible to obtain materials whose particle diameter is reduced to nanometers through conventional processes

Method used

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  • Polycrystalline material, bodies comprising same, tools comprising same and method for making same
  • Polycrystalline material, bodies comprising same, tools comprising same and method for making same
  • Polycrystalline material, bodies comprising same, tools comprising same and method for making same

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Embodiment Construction

[0056] An example method of fabricating an example polycrystalline material of a layered structure and fusing it to a steel base is described below.

[0057] Provide the powder mixture that quality is 100kg, comprise that the average grain size of 72.7 weight percent is the tungsten carbide (WC) powder of 1 micron, the iron (Fe) powder of 15 weight percent, the chromium carbide (Cr) of 10 weight percent 3 C 2 ) powder and 2.3 weight percent silicon (Si) powder. In an aqueous medium the powder mix was used in an attritor with 600 kg of hard metal balls and 4 kg of an organic mix based on hydrogen group elements containing polyvinyl compounds (product KM4034, Szchimmer and Scharz TM ) for approximately one hour to provide a slurry. After grinding, the grinding slurry is spray dried to provide microparticles that are screened for selection of particles from about 100 microns to about 180 microns.

[0058] By randomly selecting a number of particles, measuring the diameter of e...

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Abstract

Polycrystalline material comprising a plurality of nano-grains of a crystalline phase of an iron group element and a plurality of crystalline grains of material including carbon (C) or nitrogen (N); each nano-grain having a mean size less than 10 nanometres.

Description

technical field [0001] The present application mainly relates to polycrystalline materials, structures comprising the polycrystalline materials, tools comprising the polycrystalline materials and methods for making the polycrystalline materials. Specifically, but not limited to, the polycrystalline material may be used as a hard surface material to protect the body and tool from degradation in use. Background technique [0002] US Patent No. 7662207 discloses a granular material composed of nanoparticle polymers and having high strength and hardness. Grains of magnetic elements such as iron, cobalt, and nickel are reduced to the nanometer level to provide new materials exhibiting improved soft magnetic properties. A nanocrystalline austenitic steel granular material comprising nitrogen in solid solution is disclosed. The patent also discusses that the strength of metallic materials increases with decreasing grain diameter D, as taught by the Hall-Petch relationship, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F7/08C23C4/12C23C26/00C22C29/08C22C29/06
CPCB22F7/08C23C4/18C22C26/00C22C29/067C22C29/08B22F2005/001C22C29/16C22C1/053C23C4/067C23C4/129C23C4/134Y10T428/12958C21D6/002C21D6/008B22F7/06C22C1/051C22C29/005C22C29/02C30B29/02C30B29/36E21B10/46B32B15/01B82Y30/00C22C29/06C30B29/52C22C1/05B32B15/011C22C38/02C22C38/22C22C2026/003
Inventor 伊戈尔·尤利耶维奇·康亚辛贝恩德·海恩里希·里斯弗兰克·弗里德里希·拉赫曼
Owner ELEMENT SIX LTD