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Accession number;02A0902321
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| Title;Densification of Alumina Ceramics Using Spark Plasma Sintering. |
| Author;
YAJIMA YOICHI
(Ind. Res. Inst. of Nagano)
HIDA MASAHIRO
(Shinshu Univ., Fac. Engineering, JPN)
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Journal Title;Naganoken Kogyo Shikenjo Kenkyu Hokoku
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Journal Code:Y0010A
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ISSN:0913-672X
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VOL.;NO.22;PAGE.20-23(2002)
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| Figure&Table&Reference;FIG.8, TBL.1, REF.9 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;.ALPHA.-Alumina seeded activated alumina powders prepared by the sol-gel method were densified using spark plasma sintering(SPS) at sintering temperatures 1200-1500.DEG.C. for holding time of 3min under uniaxial pressure of 30MPa. As results, a specimen with a relative density of 99.5% could be achieved at 1400.DEG.C. by using the seeded activated alumina powders with seeding concentrations of 5 and 10mass%. By seeding with .ALPHA.-alumina(5 and 10mass%), the sintering temperature was reduced from 1500.DEG.C. for unseeded activated alumina to 1400.DEG.C.. The results revealed that .ALPHA.-alumina seeding was effective for producing dense alumina ceramics from activated alumina powders in the process of SPS. (author abst.) |
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