NDLI: Preparation of Porous Diamond Preforms for Infiltrating Aluminium Alloy

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Preparation of Porous Diamond Preforms for Infiltrating Aluminium Alloy

Content Provider	Scilit
Author	Guo, Caiyu You, Long Chen, Lin Ren, Shubin He, Xinbo
Copyright Year	2018
Description	Journal: Iop Conference Series: Materials Science and Engineering Diamond/Al composites with high volume fraction of diamond particles possess high hardness and so they are difficult to be machined subsequently. The near-net-shape preparation of diamond/Al composites can be successfully realized by combined process of diamond preforms by powder injection molding and then aluminium alloy infiltrating the preforms. The process of diamond preforms prepared by powder injection molding was studied, which involved the choice of the binder, the injection molding process and the sintering process. In the experiment, Cu was coating on diamond powder and then sintering diamond preforms with Cu-coated to obtain the strength for the handling operation. Research results showed that, the feedstocks had excellent rheological properties and higher solid volume fraction could be obtained, when the binder composed of 60% paraffin, 30% high density polyethylene and 10% stearic acid as the carrier was used in the powder injection molding. In powder injection molding, the best injection temperature was 160~170°C and the best injection pressure was 70~80MPa. When the diamond preforms were sintering at 950°C for 35min, its strength could reach 8MPa and open porosity was close to 100%.
Related Links	http://iopscience.iop.org/article/10.1088/1757-899X/452/2/022056/pdf
ISSN	17578981
e-ISSN	1757899X
DOI	10.1088/1757-899x/452/2/022056
Journal	Iop Conference Series: Materials Science and Engineering
Issue Number	2
Volume Number	452
Language	English
Publisher	IOP Publishing
Publisher Date	2018-12-12
Access Restriction	Open
Subject Keyword	Journal: Iop Conference Series: Materials Science and Engineering Manufacturing Engineering
Content Type	Text
Resource Type	Article

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