Comparison of deoxidation capability for preparation of low oxygen content powder from TiNi alloy scraps

Ki Min Roh; Chang Youl Suh; Jung Min Oh; Wonbaek Kim; Hanjung Kwon; Jae Won Lim

doi:10.1016/j.powtec.2013.10.028

Comparison of deoxidation capability for preparation of low oxygen content powder from TiNi alloy scraps

Ki Min Roh
, Chang Youl Suh
, Jung Min Oh
, Wonbaek Kim
, Hanjung Kwon
, Jae Won Lim^*

^*Corresponding author for this work

Metallurgical System Engineering

Korea Institute of Geoscience and Mineral Resources

Research output: Contribution to journal › Journal article › peer-review

28 Scopus citations

Abstract

Low oxygen content TiNi alloy powder was produced from TiNi alloy scraps by three types of deoxidation after the hydrogenation-dehydrogenation (HDH) process. The TiNi alloy scrap had a Ti:Ni weight ratio of 7:3. After the HDH process, the TiNi alloy powder was found to comprise α-Ti and Ti₂Ni phases. It was also confirmed that the hydrogenation process of Ti-Ni alloy showed lower exothermal temperatures than that of pure Ti. After the process of contact deoxidation in the solid state, the oxygen content of the TiNi alloy powder was 1980ppm. This deoxidized powder was treated again by the non-contact deoxidation process as a result of which the oxygen content decreased further to 1260ppm. Applying only non-contact deoxidation after the HDH process allowed us to obtain an oxygen content of 1280ppm, which is the same as that of the TiNi alloy powder obtained by both the contact and the non-contact deoxidation.

Original language	English
Pages (from-to)	266-269
Number of pages	4
Journal	Powder Technology
Volume	253
DOIs	https://doi.org/10.1016/j.powtec.2013.10.028
State	Published - 2014.02

Keywords

Deoxidation
Hydrogenation-dehydrogenation
Scraps
TiNi alloy
Titanium

Quacquarelli Symonds(QS) Subject Topics

Engineering - Chemical

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10.1016/j.powtec.2013.10.028

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@article{a3886575727f41209a73f7e6f3d407a2,

title = "Comparison of deoxidation capability for preparation of low oxygen content powder from TiNi alloy scraps",

abstract = "Low oxygen content TiNi alloy powder was produced from TiNi alloy scraps by three types of deoxidation after the hydrogenation-dehydrogenation (HDH) process. The TiNi alloy scrap had a Ti:Ni weight ratio of 7:3. After the HDH process, the TiNi alloy powder was found to comprise α-Ti and Ti2Ni phases. It was also confirmed that the hydrogenation process of Ti-Ni alloy showed lower exothermal temperatures than that of pure Ti. After the process of contact deoxidation in the solid state, the oxygen content of the TiNi alloy powder was 1980ppm. This deoxidized powder was treated again by the non-contact deoxidation process as a result of which the oxygen content decreased further to 1260ppm. Applying only non-contact deoxidation after the HDH process allowed us to obtain an oxygen content of 1280ppm, which is the same as that of the TiNi alloy powder obtained by both the contact and the non-contact deoxidation.",

keywords = "Deoxidation, Hydrogenation-dehydrogenation, Scraps, TiNi alloy, Titanium",

author = "Roh, \{Ki Min\} and Suh, \{Chang Youl\} and Oh, \{Jung Min\} and Wonbaek Kim and Hanjung Kwon and Lim, \{Jae Won\}",

year = "2014",

month = feb,

doi = "10.1016/j.powtec.2013.10.028",

language = "English",

volume = "253",

pages = "266--269",

journal = "Powder Technology",

issn = "0032-5910",

}

TY - JOUR

T1 - Comparison of deoxidation capability for preparation of low oxygen content powder from TiNi alloy scraps

AU - Roh, Ki Min

AU - Suh, Chang Youl

AU - Oh, Jung Min

AU - Kim, Wonbaek

AU - Kwon, Hanjung

AU - Lim, Jae Won

PY - 2014/2

Y1 - 2014/2

N2 - Low oxygen content TiNi alloy powder was produced from TiNi alloy scraps by three types of deoxidation after the hydrogenation-dehydrogenation (HDH) process. The TiNi alloy scrap had a Ti:Ni weight ratio of 7:3. After the HDH process, the TiNi alloy powder was found to comprise α-Ti and Ti2Ni phases. It was also confirmed that the hydrogenation process of Ti-Ni alloy showed lower exothermal temperatures than that of pure Ti. After the process of contact deoxidation in the solid state, the oxygen content of the TiNi alloy powder was 1980ppm. This deoxidized powder was treated again by the non-contact deoxidation process as a result of which the oxygen content decreased further to 1260ppm. Applying only non-contact deoxidation after the HDH process allowed us to obtain an oxygen content of 1280ppm, which is the same as that of the TiNi alloy powder obtained by both the contact and the non-contact deoxidation.

AB - Low oxygen content TiNi alloy powder was produced from TiNi alloy scraps by three types of deoxidation after the hydrogenation-dehydrogenation (HDH) process. The TiNi alloy scrap had a Ti:Ni weight ratio of 7:3. After the HDH process, the TiNi alloy powder was found to comprise α-Ti and Ti2Ni phases. It was also confirmed that the hydrogenation process of Ti-Ni alloy showed lower exothermal temperatures than that of pure Ti. After the process of contact deoxidation in the solid state, the oxygen content of the TiNi alloy powder was 1980ppm. This deoxidized powder was treated again by the non-contact deoxidation process as a result of which the oxygen content decreased further to 1260ppm. Applying only non-contact deoxidation after the HDH process allowed us to obtain an oxygen content of 1280ppm, which is the same as that of the TiNi alloy powder obtained by both the contact and the non-contact deoxidation.

KW - Deoxidation

KW - Hydrogenation-dehydrogenation

KW - Scraps

KW - TiNi alloy

KW - Titanium

UR - https://www.scopus.com/pages/publications/84890394746

U2 - 10.1016/j.powtec.2013.10.028

DO - 10.1016/j.powtec.2013.10.028

M3 - Journal article

AN - SCOPUS:84890394746

SN - 0032-5910

VL - 253

SP - 266

EP - 269

JO - Powder Technology

JF - Powder Technology

ER -

Comparison of deoxidation capability for preparation of low oxygen content powder from TiNi alloy scraps

Abstract

Keywords

Quacquarelli Symonds(QS) Subject Topics

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