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Technology and properties of YAG porous ceramics sintered by pressureless sintering method
Author(s): 
Pages: 8-12
Year: Issue:  S1
Journal: Transactions of Materials and Heat Treatment

Keyword:  YAG porous ceramicspressureless sintering methodporositycompressive strength;
Abstract: In order to obtain more function materials sorts using the excellent properties of YAG,the YAG porous ceramics were successfully prepared by pressureless sintering method.The results show that the porosity of YAG porous ceramics sintered at 1500 ℃ is similar with that of YAG porous ceramics sintered at 1550 ℃,however,the compressive strength of YAG porous ceramics sintered at 1550℃ with more sintered necks is higher than that of YAG porous ceramics sintered at 1500 ℃.The porosity and the compressive strength of YAG porous ceramics sintered with holding time of 2 h are higher than that of YAG porous ceramics sintered with holding time of 1 h.The porosity and the compressive strength of YAG porous ceramics sintered with heating rate of 5 ℃ /min are higher than that of YAG porous ceramics sintered with heating rate of 10 ℃ /min.The porosity and the compressive strength of YAG porous ceramics sintered with removing carbon temperature of 800 ℃ are higher than that of YAG porous ceramics sintered with removing carbon temperature of1000 ℃.The suitable technology is sintering at 1550 ℃,holding for 2 h,heating rate of 5 ℃ /min and removing carbon at 800 ℃,the porosity and the compressive strength of YAG porous ceramics are 59.4% and 8.55 MPa,respectively.
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