Preparation of Spherical Mo5Si3 Powder by Inductively Coupled Thermal Plasma Treatment
A method was developed to fabricate spherical Mo5Si3 powder by milling and spheroidizing using inductively coupled thermal plasma. A Mo5Si3 alloy ingot was fabricated by vacuum arc melting, after which it was easily pulverized into powder by milling due to its brittle nature. The milled powders had...
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MDPI AG
2018-08-01
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| Series: | Metals |
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| Online Access: | http://www.mdpi.com/2075-4701/8/8/604 |
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doaj-b124558df7be4bcfa1716001cae6b3ea2020-11-25T00:44:41ZengMDPI AGMetals2075-47012018-08-018860410.3390/met8080604met8080604Preparation of Spherical Mo5Si3 Powder by Inductively Coupled Thermal Plasma TreatmentJang-Won Kang0Jong Min Park1Byung Hak Choe2Seong Lee3Jung Hyo Park4Ki Beom Park5Hyo Kyu Kim6Tae-Wook Na7Bosung Seo8Hyung-Ki Park9Gangwon Regional Division, Korea Institute of Industrial Technology, Gangneung 25440, KoreaGangwon Regional Division, Korea Institute of Industrial Technology, Gangneung 25440, KoreaDepartment of Advanced Metal and Materials Engineering, Gangneung-Wonju National University, Gangneung 25457, KoreaAgency for Defense Development, Daejeon 34186, KoreaAgency for Defense Development, Daejeon 34186, KoreaGangwon Regional Division, Korea Institute of Industrial Technology, Gangneung 25440, KoreaGangwon Regional Division, Korea Institute of Industrial Technology, Gangneung 25440, KoreaGangwon Regional Division, Korea Institute of Industrial Technology, Gangneung 25440, KoreaGangwon Regional Division, Korea Institute of Industrial Technology, Gangneung 25440, KoreaGangwon Regional Division, Korea Institute of Industrial Technology, Gangneung 25440, KoreaA method was developed to fabricate spherical Mo5Si3 powder by milling and spheroidizing using inductively coupled thermal plasma. A Mo5Si3 alloy ingot was fabricated by vacuum arc melting, after which it was easily pulverized into powder by milling due to its brittle nature. The milled powders had an irregular shape, but after being spheroidized by the thermal plasma treatment, they had a spherical shape. Sphericity was increased with increasing plasma power. After plasma treatment, the percentage of the Mo3Si phase had increased due to Si evaporation. The possibility of Si evaporation was thermodynamically analyzed based on the vapor pressure of Mo and Si in the Mo5Si3 liquid mixture. By this process, spherical Mo silicide powders with high purity could be fabricated successfully.http://www.mdpi.com/2075-4701/8/8/604Mo silicideMo5Si3spheroidizingpowderinductively coupled thermal plasma |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Jang-Won Kang Jong Min Park Byung Hak Choe Seong Lee Jung Hyo Park Ki Beom Park Hyo Kyu Kim Tae-Wook Na Bosung Seo Hyung-Ki Park |
| spellingShingle |
Jang-Won Kang Jong Min Park Byung Hak Choe Seong Lee Jung Hyo Park Ki Beom Park Hyo Kyu Kim Tae-Wook Na Bosung Seo Hyung-Ki Park Preparation of Spherical Mo5Si3 Powder by Inductively Coupled Thermal Plasma Treatment Metals Mo silicide Mo5Si3 spheroidizing powder inductively coupled thermal plasma |
| author_facet |
Jang-Won Kang Jong Min Park Byung Hak Choe Seong Lee Jung Hyo Park Ki Beom Park Hyo Kyu Kim Tae-Wook Na Bosung Seo Hyung-Ki Park |
| author_sort |
Jang-Won Kang |
| title |
Preparation of Spherical Mo5Si3 Powder by Inductively Coupled Thermal Plasma Treatment |
| title_short |
Preparation of Spherical Mo5Si3 Powder by Inductively Coupled Thermal Plasma Treatment |
| title_full |
Preparation of Spherical Mo5Si3 Powder by Inductively Coupled Thermal Plasma Treatment |
| title_fullStr |
Preparation of Spherical Mo5Si3 Powder by Inductively Coupled Thermal Plasma Treatment |
| title_full_unstemmed |
Preparation of Spherical Mo5Si3 Powder by Inductively Coupled Thermal Plasma Treatment |
| title_sort |
preparation of spherical mo5si3 powder by inductively coupled thermal plasma treatment |
| publisher |
MDPI AG |
| series |
Metals |
| issn |
2075-4701 |
| publishDate |
2018-08-01 |
| description |
A method was developed to fabricate spherical Mo5Si3 powder by milling and spheroidizing using inductively coupled thermal plasma. A Mo5Si3 alloy ingot was fabricated by vacuum arc melting, after which it was easily pulverized into powder by milling due to its brittle nature. The milled powders had an irregular shape, but after being spheroidized by the thermal plasma treatment, they had a spherical shape. Sphericity was increased with increasing plasma power. After plasma treatment, the percentage of the Mo3Si phase had increased due to Si evaporation. The possibility of Si evaporation was thermodynamically analyzed based on the vapor pressure of Mo and Si in the Mo5Si3 liquid mixture. By this process, spherical Mo silicide powders with high purity could be fabricated successfully. |
| topic |
Mo silicide Mo5Si3 spheroidizing powder inductively coupled thermal plasma |
| url |
http://www.mdpi.com/2075-4701/8/8/604 |
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