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Browsing by Author "Machaka, R"

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  • Seerane, M; Chikwanda, H; Machaka, R (Trans Tech Publications, 2015-07)
    Debinding involves long and delicate processing periods of removing binder components from a green body after injection moulding; failure to completely remove the binder components results in distortion, cracking, blisters ...
  • Chikosha, S; Machaka, R; Chikwanda, HK (Trans Tech Publications, 2015-05)
    Direct powder rolling (DPR)/roll compaction has been labelled a complex and sample sensitive process. As such the design of the instrument and the determination of the optimal processing conditions for a given feed are ...
  • Chikosha, S; Machaka, R; Chikwanda, HK (Trans Tech Publication, 2015-05)
    Direct powder rolling (DPR)/roll compaction has been labelled a complex and sample sensitive process. As such the design of the instrument and the determination of the optimal processing conditions for a given feed are ...
  • Machaka, R; Chikwanda, HK (Springer, 2015-05)
    This paper reports on an attempt to independently evaluate the validity and applicability of a new compaction equation recently presented by Gerdemann and Jablonski [Metallurgical and Materials Transactions A, 42 (2011) ...
  • Seerane, MN; Chikwanda, HK; Focke, W; Machaka, R (SAIMM, 2013-10)
    Powder loading is one of the most critical factors in metal injection moulding (MIM) technology. It largely determines the success or failure of the subsequent MIM processes. A gas-atomized Ti6Al4V powder was investigated ...
  • Machaka, R; Mwakikunga, BW; Manikandan, E; Derry, TE; Sigalas, I; Herrmann, M (Hindawi Publishing Corporation, 2011-09)
    Results on a systematic study on the effects of ion implantation on the near-surface mechanical and structural properties of boron suboxide (B6O) prepared by uniaxial hot pressing are reviewed. 150 keV fluorine ions at ...
  • Machaka, R; Mwakikunga, BW; Manikandan, E; Derry, TE; Sigalas, I (VBRI press, 2011)
    Despite hot pressing being the most popular method of consolidating B6O powder, the Raman spectrum of polycrystalline hot-pressed B6O was until now poorly understood. Yet, recent reports have contributed to the understanding ...
  • Machaka, R; Derry, TE; Sigalas, I (Elsevier, 2014-06)
    Nanoindentation has become a widely used and versatile means of characterising the near-surface nanomechanical properties of a wide variety of materials. Yet, the nanomechanical properties of the polycrystalline boron ...
  • Seerane, M; Chikwanda, H; Focke, W; Machaka, R (AMI, 2014-10)
    Debinding is one of the most critical and time consuming stage in metal injection moulding (MIM). German and Bose (1997) reported that early debinding practice relied on thermal binder degradation, requiring up to 300 hours ...