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Preparation of silicon nitride ceramic powder through laser sintering and rapid moulding
The invention discloses a preparation method of silicon nitride ceramic powder through laser sintering and rapid moulding. The method comprises the following steps: pretreating silicon nitride ceramic powder by using polyvinyl alcohol to obtain the pretreated silicon nitride ceramic powder; then in a grinder, adding the following components by mass percentage: 80-85% of pretreated silicon nitride ceramic powder, 4-8% of phenolic resin, 2-5% of polyvinyl butyral and 0.8-3% of triethylenetetramine, turning on the grinder with rotating speed being 250 rotation/min, grinding for 5 minutes, adding 7-12% of acetone, wherein sum of the components is 100%, and rotating speed of the grinder is 250 rotation/min, grinding for 40-60 minutes, and drying to obtain the silicon nitride ceramic powder. The material can be directly moulded under laser sintering, moulding precision is high, and the method has the advantages of simple preparation technology, easy control of condition, low production cost, and easy industrial production.
Preparation of silicon nitride ceramic powder through laser sintering and rapid moulding
The invention discloses a preparation method of silicon nitride ceramic powder through laser sintering and rapid moulding. The method comprises the following steps: pretreating silicon nitride ceramic powder by using polyvinyl alcohol to obtain the pretreated silicon nitride ceramic powder; then in a grinder, adding the following components by mass percentage: 80-85% of pretreated silicon nitride ceramic powder, 4-8% of phenolic resin, 2-5% of polyvinyl butyral and 0.8-3% of triethylenetetramine, turning on the grinder with rotating speed being 250 rotation/min, grinding for 5 minutes, adding 7-12% of acetone, wherein sum of the components is 100%, and rotating speed of the grinder is 250 rotation/min, grinding for 40-60 minutes, and drying to obtain the silicon nitride ceramic powder. The material can be directly moulded under laser sintering, moulding precision is high, and the method has the advantages of simple preparation technology, easy control of condition, low production cost, and easy industrial production.
Preparation of silicon nitride ceramic powder through laser sintering and rapid moulding
LI HUIZHI (author) / ZHANG PEIZHI (author) / CAO CHONG (author) / CHEN YAMING (author) / HOU JINHUAN (author) / XU WEIFENG (author)
2015-09-30
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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