Title:
METHOD FOR PRODUCING METAL FOAM PRECURSOR AND METHOD FOR PRODUCING METAL FOAM
Document Type and Number:
WIPO Patent Application WO/2010/106883
Kind Code:
A1
Abstract:
The purpose of this invention is to easily produce a metal foam precursor and a metal foam without using an expensive foaming agent powder. Adding alumina when conducting friction stir processing (FSP) improves the sphericity of the pores in a metal foam and increases the porosity of the metal foam. A die-cast molding (12) that contains gas in the interior is prepared by means of die-casting. Next, a metal foam precursor (16) is produced by dispersing the gas and pore-forming nuclei contained in the interior of the die-cast molding (12) uniformly in the die-cast molding (12) by means of FSP. The metal foam precursor (16) is expanded through a heat treatment that heats the metal foam precursor (16) to near the melting point thereof to produce a metal foam.
Inventors:
HANGAI, Yoshihiko (5-1 Tenjin-cho, 1-chom, Kiryu-shi Gunma 15, 〒3768515, JP)
半谷 禎彦 (〒15 群馬県桐生市天神町一丁目５番１号 国立大学法人群馬大学内 Gunma, 〒3768515, JP)
半谷 禎彦 (〒15 群馬県桐生市天神町一丁目５番１号 国立大学法人群馬大学内 Gunma, 〒3768515, JP)
Application Number:
JP2010/052821
Publication Date:
September 23, 2010
Filing Date:
February 24, 2010
Export Citation:
Assignee:
National University Corporation Gunma University (4-2 Aramaki-machi, Maebashi-shi Gunma, 10, 〒3718510, JP)
国立大学法人群馬大学 (〒10 群馬県前橋市荒牧町四丁目２番地 Gunma, 〒3718510, JP)
Shibaura Institute of Technology (3-7-5 Toyosu, Koto-ku Tokyo, 48, 〒1358548, JP)
学校法人芝浦工業大学 (〒48 東京都江東区豊洲３－７－５ Tokyo, 〒1358548, JP)
国立大学法人群馬大学 (〒10 群馬県前橋市荒牧町四丁目２番地 Gunma, 〒3718510, JP)
Shibaura Institute of Technology (3-7-5 Toyosu, Koto-ku Tokyo, 48, 〒1358548, JP)
学校法人芝浦工業大学 (〒48 東京都江東区豊洲３－７－５ Tokyo, 〒1358548, JP)
International Classes:
C22C1/08; B22D17/00; B22D25/02; B22D29/00
Attorney, Agent or Firm:
SUDA, Masayoshi (OAK Ikebukuro Bldg, 21-11 Higashi-Ikebukuro 1-chom, Toshima-ku Tokyo 13, 〒1700013, JP)