Title:
POWDER CONTAINING TUNGSTEN CARBIDE
Document Type and Number:
WIPO Patent Application WO/2019/098183
Kind Code:
A1
Abstract:
This power containing tungsten carbide has a Fsss particle size of from 0.3 μm to 1.5 μm (inclusive), while having a content rate of tungsten carbide of 90% by mass or more. This power containing tungsten carbide is configured such that the crystallite size (average crystallite diameter) Y satisfies relational expression Y ≤ 0.1 × X + 0.20 (wherein X is the Fsss particle size of this power containing tungsten carbide).
Inventors:
FUDO TAKAYUKI (JP)
SASAYA KAZUO (JP)
HAYASHI TAKEHIKO (JP)
SASAYA KAZUO (JP)
HAYASHI TAKEHIKO (JP)
Application Number:
PCT/JP2018/041953
Publication Date:
May 23, 2019
Filing Date:
November 13, 2018
Export Citation:
Assignee:
ALMT CORP (JP)
International Classes:
C01B32/949; B22F1/05; C01G41/00; C22C1/05; C22C29/08
Domestic Patent References:
| WO2018050474A1 | 2018-03-22 |
Foreign References:
| CN1850595A | 2006-10-25 | |||
| JP2009242181A | 2009-10-22 | |||
| JP2004142993A | 2004-05-20 | |||
| JP2005519018A | 2005-06-30 | |||
| JPH09309715A | 1997-12-02 | |||
| JP2006205354A | 2006-08-10 | |||
| JPS4834800A | 1973-05-22 | |||
| CN106077668A | 2016-11-09 | |||
| JP2017219191A | 2017-12-14 | |||
| JPH09309715A | 1997-12-02 | |||
| JPH1121119A | 1999-01-26 | |||
| JPH03208811A | 1991-09-12 | |||
| JP2005335997A | 2005-12-08 |
Other References:
ZHONG, Y. ET AL.: "A study on the synthesis of nanostructured WC-10 wt% Co particles from WO 3, Co3O4, and graphite", JOURNAL OF MATERIALS SCIENCE, vol. 46, 30 October 2010 (2010-10-30), pages 6323 - 6331, XP019926638, DOI: doi:10.1007/s10853-010-4937-y
MADHAV REDDY, K. ET AL.: "Nanostructured tungsten carbides by thermochemical processing", JOURNAL OF ALLOYS AND COMPOUNDS, vol. 494, 22 January 2010 (2010-01-22), pages 404 - 409, XP026941565, DOI: doi:10.1016/j.jallcom.2010.01.059
See also references of EP 3712109A4
MADHAV REDDY, K. ET AL.: "Nanostructured tungsten carbides by thermochemical processing", JOURNAL OF ALLOYS AND COMPOUNDS, vol. 494, 22 January 2010 (2010-01-22), pages 404 - 409, XP026941565, DOI: doi:10.1016/j.jallcom.2010.01.059
See also references of EP 3712109A4
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
Download PDF: