نتایج جستجو برای: wc co

تعداد نتایج: 338277  

Journal: :Journal of Sustainable Metallurgy 2021

Abstract Cemented carbide tools suffer from many issues due to the use of tungsten and cobalt as raw materials. Indeed, those are listed by European Commission “critical materials” since 2011 US Department Interior minerals” in 2018. To remain competitive with conventional high-speed steels, less performant but cheaper, WC–Co can be recycled. In present paper, a WC–7.5Co powder, recycled “Colds...

Journal: :Journal of the Japan Society of Powder and Powder Metallurgy 1990

Journal: :Journal of the Japan Society of Powder and Powder Metallurgy 1970

Journal: :Journal of the Japan Institute of Metals and Materials 1968

Journal: :International Journal of Refractory Metals & Hard Materials 2021

Fe is a candidate to replace Co in WC hardmetals, due its lower cost and toxicity. Here, WC-FeCr hardmetal was compression tested at 900–1200 °C. Particular attention paid the steady-state creep rates stress-exponents (n) during isostress treatments. Three regimes of n are observed. Two these were previously reported for WC-Co: power law (n ≈ 3) stresses below ~100 MPa; grain boundary sliding 1...

Journal: :Journal of the Japan Society of Powder and Powder Metallurgy 2001

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