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Sialon Powders
 

AG materials synthesis process allows for the manufacture of different Sialon powder compositions. This gives AG materials the capability to design tailor made Sialon powder compositions to satisfy our customer's needs. The usage of Sialon powder may enhance the sinterability and reduce the need for additional sintering additives.

ADVANTAGES:

  • Minimize the glass phase

The presence of glass phase in intergranular regions will deteriorate the high temperature oxidation and mechanical properties of Sialon materials.

  • Simplify the process procedures

There is no need to well mix several starting raw materials as a precursor to get Sialon ceramics.

  • Different particle size distributions are available for different applications, such PM and PIM, etc.

Traditional Sialon ceramic is formed by sintering several different reactants to form consolidated block, so this causes many limitations in application.

  • Pre-determined phase composition

Traditional Sialon phase composition is formed after the reaction between Si3N4, Al2O3, AlN and metal oxides sintering aids.

APPLICATIONS:

  • Monolithic Sialon sintered ceramics
  • Metal cutting tool inserts
  • Extrusion die inserts in non-ferrous metal industry
  • Milling medium
  • Cold drawing dies and plugs for stainless steel tube
  • Welding shrouds and location pins
  • Automotive components (valves, tappet shims, etc)
  • Gas turbine engines (shroud ring, rotor blades, etc)
  • Thermal spray coating
  • Refractory materials
  • Functionally graded materials
 
 

 

21R Powder

21R Powder

TYPE

S21R-001B

S21R-020C

PHYSICAL FEATURES

 

 

Appearance

White powder

White powder

Particle size D50

1.0 ~ 2.0 um

20 ~ 30 um

Particle size D90

-

-

Specific surface

-

-

Formula

SiAl6O2N6

SiAl6O2N6

Density

2.53~3.26 g/cm3

2.53~3.26 g/cm3

Crystallographic

Sialon 21R > 98 %
Al2O3 < 2 %

Sialon 21R > 99 %
Al2O3 < 1 %

CHEMICAL COMPOSITION

 

Silicon (wt%)

9 ± 1.0

9 ± 1.0

Metal Al (wt%)

51 ± 5.0

50 ± 5.0

Nitrogen (wt%)

25 ± 3.0

25 ± 3.0

Oxygen (wt%)

11 ± 3.0

10 ± 3.0

Metal Ca (wt%)

< 0.01

< 0.01

Metal Y (wt%)

< 0.03

< 0.03

Metal Fe (wt%)

< 0.07

< 0.07

Metal Ti (wt%)

< 0.03

< 0.03

Calcium (wt%)

< 0.01

< 0.01

Metal Mg (wt%)

< 0.01

< 0.01

 

β Sialon Powder

α Sialon Powder

α Sialon Powder

TYPE

BSI-001B

ASI-001B

CSI-001B

PHYSICAL FEATURES

 

 

 

Appearance

White powder

White powder

White powder

Particle size D50

1.0 ~ 2.0 um

1.0 ~ 2.0 um

1.0 ~ 2.0 um

Particle size D90

2.0 ~ 4.0 um

2.0 ~ 4.0 um

2.0 ~ 4.0 um

Specific surface

-

-

-

Formula

Si5.55Al0.45O0.45N7.55

Y0.4Si9.6Al2.4O1.2N14.8

CaxSi12-3xAl3xOxN16-x

Density

2.53~3.26 g/cm3

2.53~3.26 g/cm3

2.53~3.26 g/cm3

Crystallographic

α Sialon < 1 %
β Sialon > 98 %
Al2O3 < 2 %

α Sialon > 98 %
β Sialon < 1%
Al2O3 < 2 %

α Sialon > 98 %
β Sialon < 1%
Al2O3 < 1 %

CHEMICAL COMPOSITION

 

 

Silicon (wt%)

50.41 ~ 60.41

40.02 ~ 49.64

26.33 ~ 54.36

Metal Al (wt%)

2.83 ~ 5.83

9.79 ~ 12.51

4.25 ~ 25.39

Nitrogen (wt%)

34.69 ~ 40.69

33.1 ~ 35.5

30.72 ~ 38.45

Oxygen (wt%)

2.07 ~ 4.57

2.90 ~ 4.03

0.84 ~ 5.02

Metal Ca (wt%)

< 0.01

< 0.01

2.10 ~ 12.54

Metal Y (wt%)

< 0.01

5.38 ~ 6.57

< 0.01

Metal Fe (wt%)

< 0.05

< 0.05

< 0.05

Metal Ti (wt%)

< 0.01

< 0.01

< 0.01

Calcium (wt%)

< 0.01

< 0.01

< 0.01

Metal Mg (wt%)

< 0.01

< 0.01

< 0.01