Synthesis and characterization of (Sr1−x′K2x)Zr4(PO4)6ceramics

✍ Scribed by Chien -Jen Chen; Li -Jiaun Lin; Dean -Mo Liu

• Publisher: Springer
• Year: 1994
• Tongue: English
• Weight: 1006 KB
• Volume: 29
• Category: Article
• ISSN: 0022-2461
• DOI: 10.1007/bf00357341

✦ Synopsis

Single phase (Sr I -x, K2,)Zra(PO4)6, where x lies between 0.0 and 1.0, ceramic powder with a submicron scale particle size has been synthesized successfully at calcination temperatures as low as 650-750 ~ by a sol-gel technique. The formation of the powder strongly depends on calcination temperature, but is independent of solution pH in the studied range. Dilatometric measurement shows an ultra-low linear coefficient of thermal expansion of 0.1 x 10 -e ~ -1 when x = 0.5 at temperature intervals of 25-1000 ~ Thermal conductivity and flexural strength of the materials were determined at ambient temperature to be 1.0 Wm -1K -1 and as high as280 MPa, respectively, indicating that this material can be an excellent candidate in many applications, especially those subjected directly to severe environments.

2.2. Sintering

After characterization, the single phase SKZP powders were compacted in a stainless steel die under 0022-2461 9 1994 Chapman & Hall

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