Results 231 to 240 of about 5,473,972 (294)

Highly transparent LiAlON ceramic prepared by reaction sintering and post hot isostatic pressing

Journal of the European Ceramic Society, 2018
A highly transparent polycrystalline LiAlON ceramic with the size of Φ57 mm × 6 mm was successfully fabricated by reaction sintering (1750 °C, 20 h) and post hot isostatic pressing (HIP, 1850 °C, 3 h, 180 MPa) using AlN, Al2O3 and LiAl5O8 powders ...
Rongshi Zhang, Wang Yuezhong, Tian Meng, Hao Wang   +3 more
semanticscholar   +1 more source

Reaction Sintered LiAlON

2008
Recent results suggest that Li + can substitute for Al 3+ in the gamma-AlON structure. LiAl 5 O 8 is isostructural with gamma-AlON above 1290°C after it goes through an ordered-disordered phase transformation and has a similar lattice parameter. A previous study showed the benefits of reaction sintering LiAlON starting with LiAl 5 O 8 as compared ...
Raymond A. Cutler, R. Marc Flinders
openaire   +1 more source

Reaction Sintering of Uranium Monocarbide

Transactions of the Indian Ceramic Society, 1975
High density (95% theoretical) single-phase uranium monocarbide has been fabricated by warm pressing a mixture of suitably sized dicarbide and uranium metal powders at 800°C at 675 kg/cm2 for 5 minutes and by subsequent sintering at 600°-1000°C. The high density and the single phase structure could be retained upto 1800°C, though some grain growth ...
B. D. Zope, V. K. Moorthy
openaire   +1 more source

Reaction-sintered aluminium titanate

Journal of Materials Science Letters, 1989
On etudie le frittage reactif de melanges de poudres de Al 2 O 3 et TiO 2 , avec addition de 2% en poids de BaO, Li 2 O, SnO 2 ou Na 2 O.
openaire   +1 more source

Reaction-sintered carbide-nitride systems

Refractories, 1990
On etudie le frittage reactif de systemes de refractaires composites a base de carbure de bore contenant du nitrure de bore et du carbure de ...
T. P. Markholiya, I. I. Kozelkova, T. M. Bragina, L. M. Aksel'rod   +3 more
openaire   +1 more source

Reaction-sintered ZrO2-mullite composites

Materials Science and Engineering: A, 1989
Abstract Mullite ceramics have rather modest mechanical properties at room temperature. However, the strength and fracture toughness can be improved by adding ZrO 2 , i.e. through transformation-toughening mechanisms. The present study has been devoted to the preparation of mullite and ZrO 2 -mullite composites by reaction sintering.
M. Holmström, T. Chartier, P. Boch
openaire   +1 more source

Fabrication of Reaction‐Sintered Sialon

Journal of the American Ceramic Society, 1977
A factorial design experiment was conducted to determine the major parameters affecting the densification of mixtures having the composition (in mol%) 50 Si 3 N 4 , 25 A1 2 O 3
R. R. WILLS, R. W. STEWART, J. M. WIMMER
openaire   +1 more source

Hydrothermal reaction sintering of monoclinic zirconia

1989
A dense monoclinic zirconia ceramic having a maximum density of 5.85 g/cm3 and grains of 1–5 µm has been prepared from Zr metal powder and water in a Pt capsule by hydrothermal reaction sintering at 1000°C for 3 h under 98 MPa. The effects of temperatures, pressures, and initial compositions on the densification and sintering were studied. The reaction
Masahiro Yoshimura, Shigeyuki Sômiya
openaire   +1 more source

Fractography of Reaction-Sintered Si3N4

Journal of Engineering for Power, 1980
Fractography studies were accomplished on two reaction-sintered Si3N4 materials (Norton NC-350 Si3N4 and KBI (Kawecki-Berylco) Si3N4) which had been tested in four-point bending at room temperature, 1200, 1350, and 1500°C in air. At room temperature NC-350 exhibited uniform planar features representing a transgranular fracture mode, uniformly ...
M. G. Mendiratta, P. L. Land, R. Ruh, R. W. Rice, D. C. Larsen   +4 more
openaire   +1 more source

Reaction-sintered hot-pressed TiAl

Journal of Materials Science, 1992
Titanium aluminide intermetallic alloys and composites were formed from elemental titanium and aluminium powders by self propagating, high-temperature synthesis in an induction-heated hot-press. The crystal phases, density, transverse rupture stress, and hardness of the reaction-sintered compacts, were observed to be controlled by hot-pressing ...
J. C. Rawers, W. R. Wrzesinski
openaire   +1 more source