To obtain a Ti.Al intermetallic compound which is light in weight, excellent in heat resistance and high in creep rupture strength by diffusing alumina on the surface of the powder to be sintered of the Ti.Al intermetallic compound consisting of at least two metals.
In a process of pulverizing and regulating the crude powder of the Ti.Al intermetallic compound consisting of, preferably, at least two kinds of metals, the oxygen in the intermetallic compound is oxidation-increased in quantity with respect to the raw powder, the alumina is diffused in the powder, and the crude powder of the intermetallic compound is pulverized and regulated by a mechanical pulverizing method so that the mean grain size of the powder is ≤30 μm. The quantity of oxygen in the intermetallic compound is oxidation-increased with respect to the raw powder by bringing the powder into contact with CO2 gas in a weak acidic circumstance, is and contained at about ≤1.5 wt.% in an enriched manner, and the alumina is diffused in the powder.
| JP5872590 | Heat-resistant alloy and its manufacturing method |
| JP2020194734 | TRANSLUCENT CONDUCTIVE FILM WITH ELECTRODE |
| JPS61217505 | PRODUCTION OF POROUS ALUMINUM |
SUGIMOTO TAKASHI
NIIKUMA TAKASHI
TERAOKA TSUNEO
JAPAN SCIENCE & TECH CORP
| JPH0754008A | 1995-02-28 | |||
| JPH0892602A | 1996-04-09 |
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