نتایج جستجو برای: sintered carbide

تعداد نتایج: 14914  

Journal: :International Journal of Refractory Metals and Hard Materials 2020

2017
Taoran Ma Rafael Borrajo-Pelaez Peter Hedström Andreas Blomqvist Ida Borgh Susanne Norgren Joakim Odqvist

(Ti,Zr)C powder was sintered with WC-Co following an industrial process, including an isotherm at 1410 °C. A series of interrupted sintering trials was performed with the aim of studying the sintering behavior and the microstructural evolution during both solid-state and liquid-state sintering. Reference samples, using the same elemental compositions but with the starting components TiC and ZrC...

2017
Ramandeep Sandhu Mohit Kheur Supriya Kheur

AIM The aim of the present study was to assess the change in physical properties (surface roughness, surface hardness and phase transformation) after surface grinding of zirconia by using three commercially available abrasives. MATERIALS AND METHODS Thirty sintered zirconia specimens were prepared and divided into three groups namely Group M (grinded using Mani Dia diamond bur standard grit),...

2016
Devin McMillen Wenbin Li Ming C. Leu Gregory E. Hilmas Jeremy Watts

This work describes a process by which zirconium diboride (ZrB2) parts may be fabricated using the Ceramic On-Demand Extrusion (CODE) process. An oxide-carbide-nitride system consisting of ceramic powders and pre-ceramic organics, designed to yield ZrB2 after reaction sintering, has been developed to produce an aqueous-based extrudate for subsequent processing in the CODE system. Pressurelessly...

Journal: :Industrial health 2007
Aleksandr B Stefaniak Gregory A Day Christopher J Harvey Stephen S Leonard Diane E Schwegler-Berry Steve J Chipera Nancy M Sahakian William P Chisholm

Inhalation of cobalt (Co) and tungsten carbide (WC) particles, but not Co or WC alone, may cause hard metal disease, risk of which does not appear to be uniform across cemented tungsten carbide (CTC) production processes. Inhalation of Co alone or in the presence of WC may cause asthma. Hypothesizing that aerosol size, chemical content, heterogeneity, and constituent compaction may be important...

Journal: :Journal of the Japan Institute of Metals and Materials 1980

2014
I. SAMARDZIC

G. Krolczyk, Opole University of Technology, Faculty of Production Engineering and Logistics, Opole, Poland; P. Nieslony, Opole University of Technology, Department of Manufacturing Engineering and Production Automation; S. Legutko, Poznan University of Technology, Institute of Mechanical Technology, Poznan, Poland; I. Samardzic, J.J. Strossmayer University of Osijek, Mechanical Engineering Fac...

2012
Nina J. Lane Michael Naguib Jun Lu Lars Hultman Michel W. Barsoum

Upon annealing cold-pressed Ti2AlC, -325 mesh powders, at 1500 °C for 8 h in argon, the resulting partially sintered sample contained 43(±2) wt.% of the layered ternary carbide Ti5Al2C3. Herein, the X-ray powder diffraction pattern of Ti5Al2C3 is reported for the first time. Its structure and stoichiometry are confirmed through high-resolution transmission electron microscopy. This phase has a ...

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