Journal ArticleDOI
Comparative study of carbon black and graphite powder as carbon source for PM compacts
B.-Y. Chen,K.-S. Hwang +1 more
TLDR
In this article, the graphite powder was replaced by the nanoscale carbon black powder, which provided more uniform distribution, higher apparent density, and faster flow rate for the Fe-0·8%C powder mixture.Abstract:
Graphite powder is the most widely used source of carbon in making powder metallurgy components. In this study, the graphite powder was replaced by the nanoscale carbon black powder. Compared to graphite powder, the carbon black powder provides more uniform distribution, higher apparent density, and faster flow rate for the Fe–0·8%C powder mixture. After sintering, the homogenisation of carbon, microstructure, and hardness are all similar between the two carbon powders. But a higher amount of spring back during ejection and thus lower green density was attained by using carbon black powders. Nonetheless, the compacts using carbon black powder had higher amounts of shrinkage, which compensated for the spring back effect during sintering, thus giving the same density as the graphite powder.read more
Citations
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Journal ArticleDOI
Electrical and thermal phenomena in low‐density polyethylene/carbon black composites near the percolation threshold
Sohrab Azizi,Eric David,M. Fréchette,Phuong Nguyen-Tri,Phuong Nguyen-Tri,Claudiane Ouellet-Plamondon +5 more
TL;DR: Azizi et al. as mentioned in this paper investigated the electrical and thermal properties of low-density polyethylene/carbon black composites near the percolation threshold and found that CB particles with high thermal conductivity increased the heat conductance of the LDPE/CB20 up to 56%.
Journal ArticleDOI
Dissolution of carbon in Cr-prealloyed PM steels: effect of carbon source
TL;DR: In this article, the effect of three carbon sources (synthetic graphite, natural graphite and carbon black) on microstructure and inter-particle neck development in Cr-alloyed PM steels was analyzed.
Dissolution of Carbon in Cr-Prealloyed PM Steels: Effect of Carbon Source
TL;DR: In this article, the effect of three different carbon sources (synthetic graphite, natural graphite and carbon black) on the microstructure and inter-particle necks development in Cr-alloyed PM steels was analyzed.
Design and development of clay-based graphene/polymer composites for extruded cable application
TL;DR: In this article, the authors proposed to increase the electrical and thermal conductivity of several conductive polymeric composites using naturally based graphene hybrids, obtained from clay and sucrose.
Patent
Anode for Secondary Battery, and Lithium Secondary Battery Manufactured Therefrom
TL;DR: In this article, an anode for a secondary battery including a first anode active material and a second active material having relatively lower hardness than that of the first active material was provided, and it was shown that such an anodes satisfy Relational Formula 1 0.167
References
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Journal ArticleDOI
Effects of TiC/TiN addition on the microstructure and mechanical properties of ultra-fine grade Ti (C, N)–Ni cermets
TL;DR: In this article, two series of Ti (C, N)-based cermets, one with TiC addition and the other with TiN addition, were fabricated by conventional powder metallurgy technique.
Journal ArticleDOI
A novel route to prepare ultrafine-grained WC-Co cemented carbides
TL;DR: In this paper, a new way of synthesizing pure WC-Co composite powder by in situ reduction and carbonization reactions of WO 2.9, Co 3 O 4 and carbon black powders is presented.
Journal ArticleDOI
Dissolution of different graphite grades during sintering of PM steels
TL;DR: In this article, the dissolution behavior of graphite during sintering of Fe 0.8%C was studied using standard high quality natural graphite and an artificial graphite grade recently developed for ferrous powder metallurgy.
Journal ArticleDOI
Reaction sequences and influence factors during preparation of Ti(C,N) powders
TL;DR: In this article, phase evolution sequences during reaction and influence of main technological parameters were investigated using X-ray diffraction (XRD) and scanning electron microscope (SEM) techniques.