Titanium powder production by preform reduction process (PRP)

Okabe, Toru H.; Oda, Takashi; Mitsuda, Yoshitaka

doi:10.1016/s0925-8388(03)00610-8

Cited by 158 publications

(81 citation statements)

References 8 publications

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“…[21][22][23] Feed preforms are prepared by mixing a starting material oxide feed, flux, and binder solution. After drying, the preforms have sufficient mechanical strength to stand alone.…”

Section: Preform Reduction Process (Prp)mentioning

confidence: 99%

Production of Metallic Vanadium by Preform Reduction Process

Miyauchi

Okabe

2010

Mater. Trans.

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A fundamental study was conducted on a new process for producing vanadium (V) metal by the preform reduction process (PRP) based on metallothermic reduction of vanadium pentoxide (V 2 O 5 ). Feed preforms with good mechanical strength even at elevated temperatures were prepared by adding either CaO or MgO to V 2 O 5 feed powder because V 2 O 5 has a low melting point of 963 K; thus complex oxides (Ca x V y O z , Mg x V y O z ) with high melting point at more than 1273 K were obtained. Reduction experiments were conducted by using either Ca or Mg vapor at 1273 K for 6 h. V metal with a purity of more than 99% was successfully obtained when using Mg as a reductant. The feasibility of producing V metal by the PRP will be discussed on the basis of fundamental experiments.

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“…[21][22][23] Feed preforms are prepared by mixing a starting material oxide feed, flux, and binder solution. After drying, the preforms have sufficient mechanical strength to stand alone.…”

Section: Preform Reduction Process (Prp)mentioning

confidence: 99%

Production of Metallic Vanadium by Preform Reduction Process

Miyauchi

Okabe

2010

Mater. Trans.

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“…50 kWh/kg Ti 6 ), environmentally unfriendly (> 2 kg CO 2 per kg Ti) and a semi-batch process. Thus, there have been continuous research and industrial efforts to improve or replace the Kroll process [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] as summarised in the supplementary Table S1.…”

Section: Introductionmentioning

confidence: 99%

Development of the Fray-Farthing-Chen Cambridge Process: Towards the Sustainable Production of Titanium and Its Alloys

Dolganov

et al. 2017

JOM

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“…However, the purification processes to produce TiCl 4 , including the high-temperature chlorination process from TiO 2 -bearing minerals, involve a series of highly energy-intensive and costly processes [14]. Motivated by the aim to avoid the high-temperature chlorination process, there have been a number of investigations involving the use of commercial TiO 2 , titania slag, synthetic rutile, or UGS, as the precursor material [15][16][17][18][19][20][21][22][23][24][25][26]. Intuitively, TiO 2 would be a lower cost precursor than TiCl 4 if the high-temperature chlorination step could be avoided.…”

Section: Thermochemical Processesmentioning

confidence: 99%

Powder metallurgy of titanium – past, present, and future

Fang

Paramore

Sun

et al. 2017

International Materials Reviews

389

158

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Powder metallurgy (PM) of titanium is a potentially cost-effective alternative to conventional wrought titanium. This article examines both traditional and emerging technologies, including the production of powder, and the sintering, microstructure, and mechanical properties of PM Ti. The production methods of powder are classified into two categories: (1) powder that is produced as the product of extractive metallurgy processes, and (2) powder that is made from Ti sponge, ingot, mill products, or scrap. A new hydrogen-assisted magnesium reduction (HAMR) process is also discussed. The mechanical properties of Ti-6Al-4V produced using various PM processes are analyzed based on their dependence on unique microstructural features, oxygen content, porosity, and grain size. In particular, the fatigue properties of PM Ti-6Al-4V are examined as functions of microstructure. A hydrogen-enabled approach for microstructural engineering that can be used to produce PM Ti with wroughtlike microstructure and properties is also presented.

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Titanium powder production by preform reduction process (PRP)

Cited by 158 publications

References 8 publications

Production of Metallic Vanadium by Preform Reduction Process

Production of Metallic Vanadium by Preform Reduction Process

Development of the Fray-Farthing-Chen Cambridge Process: Towards the Sustainable Production of Titanium and Its Alloys

Powder metallurgy of titanium – past, present, and future

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