TY - JOUR
T1 - Preparation of Mo(Si,Al)2 feedstock used for air plasma spraying
AU - HOU, Hui dong
AU - NING, Xian jin
AU - WANG, Quan sheng
AU - GAO, Bin
AU - LIU, Yan bo
AU - LIU, Ying
N1 - Publisher Copyright:
© 2016 The Nonferrous Metals Society of China
PY - 2016/11/1
Y1 - 2016/11/1
N2 - In order to prepare high quality Mo(Si,Al)2 feedstock characterized with C40 phase, higher Al doping amount and excellent flowability, Mo(Si1–x,Alx)2 with different Al contents (x=0, 0.1, 0.2, 0.3, 0.4, 0.5) were synthesized by self-propagating high-temperature synthesis first and Mo(Si0.6,Al0.4)2 was confirmed as the suitable material through X-ray diffraction analysis. A series of tests with different parameters of induction plasma spheroidization were applied to improving the flowability of feedstock. Mo(Si,Al)2 feedstock with excellent flowability (26.2 s/50 g) was prepared through adding hydrogen into sheath gas and decreasing the powder feeding rate. The composition segregation occurred in the spheroidized powder after Al consumption and oxidation. The inhomogeneous structure of the same particle was caused by the asymmetric heating and cooling when particle passed through the plasma jet.
AB - In order to prepare high quality Mo(Si,Al)2 feedstock characterized with C40 phase, higher Al doping amount and excellent flowability, Mo(Si1–x,Alx)2 with different Al contents (x=0, 0.1, 0.2, 0.3, 0.4, 0.5) were synthesized by self-propagating high-temperature synthesis first and Mo(Si0.6,Al0.4)2 was confirmed as the suitable material through X-ray diffraction analysis. A series of tests with different parameters of induction plasma spheroidization were applied to improving the flowability of feedstock. Mo(Si,Al)2 feedstock with excellent flowability (26.2 s/50 g) was prepared through adding hydrogen into sheath gas and decreasing the powder feeding rate. The composition segregation occurred in the spheroidized powder after Al consumption and oxidation. The inhomogeneous structure of the same particle was caused by the asymmetric heating and cooling when particle passed through the plasma jet.
KW - C40 phase
KW - Mo(Si, Al)
KW - composition segregation
KW - induction plasma spheroidization
KW - self-propagating high-temperature synthesis
UR - https://www.scopus.com/pages/publications/85002670173
U2 - 10.1016/S1003-6326(16)64424-2
DO - 10.1016/S1003-6326(16)64424-2
M3 - Article
AN - SCOPUS:85002670173
SN - 1003-6326
VL - 26
SP - 2939
EP - 2946
JO - Transactions of Nonferrous Metals Society of China (English Edition)
JF - Transactions of Nonferrous Metals Society of China (English Edition)
IS - 11
ER -