Synthesis of WC-20 wt. % Cu composite powders by co-precipitation and carburization processes

• Autorzy: Ardestani M. , Arabi H. , Razavizadeh H. , Rezaie H. R. , Mehrjoo H.
• Języki publikacji: EN

Abstrakty

EN

WC/Cu composite powders were synthesized by co-precipitation and subsequent reduction-carburization process. The precipitates contained W-Cu compounds fabricated using a chemical procedure from a mixture of copper nitrate and ammonium paratungstate in distilled water. In order to synthesize the WCCu composite powders, dried precipitates were calcined at 823 K in air and then reduced and carburized by carbon monooxide (CO). The non-isothermal mechanism of reduction-carburization of the calcined powders in carbon monoxide was investigated by thermogravimetry, differential thermogravimetry and X-ray diffraction analyses. The optimum reduction-carburization temperature was determined as 1065 K. The microstructures of the powders were characterized by the scanning electron microscopy.

Słowa kluczowe

EN

WC-Cu composites; reduction; carburization; thermogravimetry

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2010
• Tom: Vol. 28, No. 2
• Strony: 413--420
• Opis fizyczny: Bibliogr. 11 poz.

Twórcy

autor

Ardestani M.

autor

Arabi H.

autor

Razavizadeh H.

autor

Rezaie H. R.

autor

Mehrjoo H.

• Department of Materials and Metallurgical Engineering Iran University of Science and Technology Narmak, Tehran 16846-13114 Iran

Bibliografia

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