Metal powder for powder metallurgy, compound, granulated powder, and sintered body

a technology of metal powder and powder metallurgy, which is applied in the direction of metal-working apparatus, transportation and packaging, etc., can solve the problems of significant increase in work load and inevitable cost increase, and achieve the effect of high density and high density

Inactive Publication Date: 2016-08-11
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0010]An advantage of some aspects of the invention is to provide a metal powder for powder metallurgy, a compound, and a granulat

Problems solved by technology

In such a case, a sintered body is further subjected to an additional treatment such as a hot isostatic pressing treatment (HIP tr

Method used

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  • Metal powder for powder metallurgy, compound, granulated powder, and sintered body
  • Metal powder for powder metallurgy, compound, granulated powder, and sintered body
  • Metal powder for powder metallurgy, compound, granulated powder, and sintered body

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examples

[0260]Next, Examples of the invention will be described.

1. Production of Sintered Body (Zr—Nb Based)

Sample No. 1

[0261](1) First, a metal powder having a composition shown in Table 1 produced by a water atomization method was prepared. This metal powder had an average particle diameter of 4.05 μm, a tap density of 4.15 g / cm3, and a specific surface area of 0.21 m2 / g.

[0262]The composition of the powder shown in Table 1 was identified and quantitatively determined by an inductively coupled high-frequency plasma optical emission spectrometry (ICP analysis method). In the ICP analysis, an ICP device (model: CIROS-120) manufactured by Rigaku Corporation was used. Further, in the identification and determination of C, a carbon-sulfur analyzer (CS-200) manufactured by LECO Corporation was used. Further, in the identification and determination of 0, an oxygen-nitrogen analyzer (TC-300 / EF-300) manufactured by LECO Corporation was used.

[0263](2) Subsequently, the metal powder and a mixture (or...

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Abstract

A metal powder comprising particles, which contain Fe, Cr, Si and C, and in which when one element selected from the group consisting of Ti, V, Y, Zr, Nb, Hf, and Ta is defined as a first element, and one element selected from the group consisting of Ti, V, Y, Zr, Nb, Hf, and Ta, and having a higher group number in the periodic table than that of the first element or having the same group number in the periodic table as that of the first element and a higher period number in the periodic table than that of the first element is defined as a second element, the first element is contained in a proportion of 0.01% by mass or more and 0.5% by mass or less, and the second element is contained in a proportion of 0.01% by mass or more and 0.5% by mass or less.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to Japanese Patent Application No. 2015-023385 filed on Feb. 9, 2015. The entire disclosures of Japanese Patent Application No. 2015-023385 is hereby incorporated herein by reference.BACKGROUND[0002]1. Technical Field[0003]The present invention relates to a metal powder for powder metallurgy, a compound, a granulated powder, and a sintered body.[0004]2. Related Art[0005]In a powder metallurgy method, a composition containing a metal powder and a binder is molded into a desired shape to obtain a molded body, and the obtained molded body is degreased and sintered, whereby a sintered body is produced. In such a process for producing a sintered body, an atomic diffusion phenomenon occurs among particles of the metal powder, whereby the molded body is gradually densified, resulting in sintering.[0006]For example, JP-A-2012-87416 proposes a metal powder for powder metallurgy which contains Zr and Si, with the re...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F5/00C22C38/00C22C38/48C22C38/46C22C38/44B22F3/15C22C38/50B22F1/10
CPCB22F3/15C22C38/005C22C38/22C22C38/24C22C38/26C22C38/28C22C38/44C22C38/46C22C38/48C22C38/50B22F2998/10C22C33/0285B22F5/00B22F2301/35B22F2302/45C22C38/002B22F1/0003B22F1/0059B22F3/02B22F3/1021B22F3/10C22C33/02C22C38/001C22C38/02C22C38/12C22C38/14C22C38/18C22C38/34C22C38/36C22C38/56C22C38/60B22F1/00B22F1/10B22F9/082C22C38/04
Inventor NAKAMURA, HIDEFUMI
Owner SEIKO EPSON CORP
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