ISSN:
1551-2916
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Xenotime-type RPO4 (R = Y, Er, Yb, or Lu) powder was dry-pressed into disks and bars. The disks and bars could be sintered to a relative density of greaterthan equal to98% in air without cracking at 1300° (R = Yb or Lu) or 1500°C (R = Y or Er), depending on the grain size. The linear thermal expansion coefficient (at 1000°C), thermal conductivity (at 20°C), and bending strength (at 20°C) of the xenotime-type RPO4 ceramics were 6.2 10-6/°C, 12.02 W(mK)-1, and 95 ± 29 MPa for R = Y; 6.0 10-6/°C, 12.01 W(mK)-1, and 100 ± 21 MPa for R = Er; 6.0 10-6/°C, 11.71 W(mK)-1, and 135 ± 34 MPa for R = Yb; and 6.2 10-6/°C, 11.97 W(mK)-1, and 155 ± 25 MPa for R = Lu. The xenotime-type RPO4 ceramics did not react with SiO2, TiO2, Al2O3, ZrO2, or ZrSiO4, even at 1600°C for 3 h in air, and were stable in aqueous solutions of HCl, H2SO4, HNO3, NaOH, and NH4OH at 20°C.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1151-2916.1998.tb02613.x
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