The grain size can be controlled by many means.

According to this production method, a spherical grain having a small grain size and a high sphericity can be obtained.

The grain size may be designed to be at least a size at which phonon scattering begins to dominate over grain boundary scattering in the polycrystalline substrate.

With the present invention, compost having a fine grain size can be obtained.

The homogeneity is measured at a scale greater than ten times the average grain size and spans the dimension of the PCD body.

Moreover, the grain size of the flocculant starting material is 150 µm or smaller.

In some embodiments, the microcrystalline grains lack uniform grain size or are variably sized.

The grain structure is at least 99 percent recrystallized and has a grain size of less than 200 µm.

The thickness of said film is 10-1000 nm, and the grain size is 10-200nm.

After working at the third working temperature, the titanium alloy comprises a desired refined alpha-phase grain size.

Disclosed is a plant having an increased grain size, which contains functional-type sh4 gene.

  The copper alloy material is also characterized by having a crystal grain size of 3-15 μm.

The concrete waste and/or the LD-slag can for example have a grain size of 100 μm or less.

The proportion of crystals with a crystal grain size of 2.0 - 6.0 µm by equivalent circle diameter is 5 -15%.

The bracket body (12) may be made of a polycrystalline ceramic having a grain size distribution characterized by an average grain size in the range of larger than 3.4 μm to about 6 μm.