Fabrication of nano-structured materials by high-pressure sintering

• Autorzy: Czepelak M. , Staszewski M. , Wrona A. , Lis M. , Osadnik M.
• Języki publikacji: PL

Abstrakty

EN

Purpose: The aim of this work was to fabricate nanocrystalline powders and high-density bulk materials using a sintering method with limited grain growth so as to maintain nanocrystalline structure of the materials also after sintering. Design/methodology/approach: The size of crystallites and physical properties of the obtained nanocrystalline powders and sinters made from these powders were examined. The studied materials were pure copper and the following powders: Cu+1%WC, Cu+3%WC, Cu+3%AlNi and AlNi. The technology for preparation of nano-structured powders was used, which included milling the powders in ball mills and their sintering in a pressing furnace. Findings: It was found that the objective of this work can be achieved provided that high-pressure sintering is used, in which the stages of compacting and sintering proceed simultaneously over a short period of time. Research limitations/implications: It is recommended to perform further studies aimed at checking the possibility of using the proposed method of nanomaterials fabrication in the case of the materials with other chemical composition. Practical implications: This work broadens possibilities of metal powder sintering technology by fabrication of bulk nanocrystalline materials. Originality/value: The results from his work shall be useful in determining conditions for fabrication of nanocrystalline or sub-microcrystalline materials by the sintering method.

Słowa kluczowe

PL

materiały kompozytowe; nanomateriały; wielkość krystalitów

EN

powder metallurgy; metal sintering; nanomaterials; crystallite size

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2008
• Tom: Vol. 30, nr 2
• Strony: 109--112
• Opis fizyczny: Bibliogr. 15 poz.

Twórcy

autor

Czepelak M.

autor

Staszewski M.

autor

Wrona A.

autor

Lis M.

autor

Osadnik M.

• Institute of Non-Ferrous Metals, ul. Sowińskiego 5, 44-100 Gliwice, Poland,

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