HEAT-RESISTANT SINTERED MATERIAL HAVING EXCELLENT OXIDATION RESISTANCE, WEAR RESISTANCE AT HIGH TEMPERATURES AND SALT DAMAGE RESISTANCE, AND METHOD FOR PRODUCING SAME

Title:

HEAT-RESISTANT SINTERED MATERIAL HAVING EXCELLENT OXIDATION RESISTANCE, WEAR RESISTANCE AT HIGH TEMPERATURES AND SALT DAMAGE RESISTANCE, AND METHOD FOR PRODUCING SAME

Document Type and Number:

WIPO Patent Application WO/2016/158738

Kind Code:

A1

Abstract:

The purpose of this heat-resistant sintered material and a production method thereof is to obtain a heat-resistant sintered material that has excellent oxidation resistance, wear resistance at high temperatures, and salt damage resistance. This heat-resistant sintered material is characterized by: having a composition that contains, in mass%, 25-50% of Cr, 2-25% of Ni and 0.2-1.2% of P, with the balance made up of Fe and unavoidable impurities; and having a structure that comprises an Fe-Cr matrix and hard phases that are dispersed within the Fe-Cr matrix and are composed of Cr-Fe alloy grains. This heat-resistant sintered material is also characterized in that: the Cr content in the Fe-Cr matrix is 24-41% by mass; the Cr content in the hard phases is 30-61% by mass; and the intercommunicating porosity is 2% or less.

Inventors:

KATO KENICHI (JP)
MIZUNO TATSUKI (JP)
MIYAHARA MASAHISA (JP)

Application Number:

PCT/JP2016/059601

Publication Date:

October 06, 2016

Filing Date:

March 25, 2016

Export Citation:

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Assignee:

DIAMET CORP (JP)

International Classes:

C22C38/00; B22F1/00; C22C30/00; C22C33/02

Domestic Patent References:

WO2005012585A1

2005-02-10

Foreign References:

JP2014169468A	2014-09-18
JP2001303233A	2001-10-31
JPH0577025A	1993-03-30

Other References: