Therefore, it is advisable to specify "HIP" treated tungsten carbides
, especially when they are intended for critical applications.
In addition to silicon carbide
, the researchers produced titanium, niobium, iron, and boron carbide
rods, reports Charles M.
Fueled by the demand from such downstream sectors as PV, LED, and ceramics, China's silicon carbide
output substantially increased in 2010 to 1.
Trial heats using SiC and higher MgFeSi additions exhibited the greatest amount of iron carbides
due to the considerably higher residual magnesium levels.
Low Mn concentrations can result in carbides
, chill, finer graphite, more pearlite matrix and more erratic casting properties.
The late-inoculation was much more effective in increasing nodule count and reducing carbides
and thereby improving elongation of both sections.
Historically, the formation of carbides
in cast iron has been minimized with proper inoculation materials and techniques.
2% of silicon carbide
and/or 75% ferrosilicon (FeSi);
In a Ductile Iron Society study, a Sr-containing FeSi outperformed all other commercial inoculant tested when avoidance of carbides
in the 3.
The presence of primary carbides
in the structure also can reduce mechanical properties.
First, if the initial undercooling of the solidus dips below the carbide
eutectic temperature, carbides
can freeze out the liquid.
For ductile iron, inoculant addition ensures good machinability, eliminates carbides
, increases nodule counts, reduces chill and refines the microstructure.