To verify these rules, laser
sintered snap-fits with rectangular cross-sections and ring segments were tested.
WC-8Co powders were
sintered at temperatures of 1523-1613 K for 0-10 min under a vacuum of 7 Pa.
In some researches [20, 21], the relative density of Mo-Cu composites is ranging from 92 to 97% (relatively low), even though the compacts are
sintered at a higher temperature with more sintering time than those in this research.
Further sintering at temperature range between 950[degrees]C and 1100[degrees]C, during 2h at each temperature, gave the Raman spectra of the same intensity and identical Raman bands as observed for Ba-TN
sintered at 900[degrees]C (see Figure 2(b-e)).
Table-2: Table showing porosity content in un-sintered and
sintered Al-SiC composites.
For studying the microstructural properties, all the
sintered samples were gradually polished with SiC paper and 1 [micro]m diamond paste.
The crystalline phases present in the calcined powder and the
sintered ceramic pellets were investigated using powder X-ray diffraction analysis using Cu K[alpha] radiation in a Bruker D8 Advance diffractometer in the Bragg-Brentano geometry, operating at 40kV/40mA in the continuous scanning mode, over a 2[theta] range from 20[degrees] to 80[degrees].
However, when the preheating temperature exceeds a certain value, too much gas generated by the organic matter may excessively impact the surface of the ceramsite, causing the
sintered body to crack and being difficult to expand.
These characteristics are not favorable for sintering, resulting in low production, low grade, poor strength, low yield, and high solid energy consumption of the
sintered ore [1, 2].
Agarwal, "Graphene-induced strengthening in spark plasma
sintered tantalum carbide-nanotube composite," Scripta Materialia, vol.
Reduction of the secondary operations after the parts are densified and
sintered improves costs and offers an alternate to machined wrought products.
The body includes a
sintered part of a metallic powder fused together layer by layer, and a non-sintered part attached to the
sintered part and in contact therewith in a contact zone, the
sintered part forming the first surface and the non-sintered part forming the second surface.