Alumina Ceramic
Alumina ceramic is a bio-inert
material, causing no known adverse
tissue reactions. Keramos™ uses a highly pure alumina (aluminum oxide)
ceramic containing a small amount of magnesium oxide
to prevent grain growth and to allow the alumina to be
sintered to near theoretical density.
Hot Isostatic Pressing
Hot Isostatic Pressing (Hipping) is a sintering
process that requires a temperature in excess of
1400° C and a pressure greater than 1000 Bars. With
the hipping process, Keramos alumina ceramic
surpasses ISO standards for ceramic strength by 45%.
Atomic Structure
The atomic structure of alumina ceramic creates a
surface layer of oxygen ions. The oxygen ions produce
a residual surface charge attracting polarized molecules
such as water. These molecules are absorbed as a result
of Van der Waals forces and act as a lubricant to reduce
wear rates.
Rigidity
Keramos components have
a Young's Modulus of 380 GPA.
The high rigidity of Keramos enables even load distribution
to the metal shell.
Hardness
The atomic structure of alumina ceramic creates a
surface layer of oxygen ions. The oxygen ions produce
a residual surface charge attracting polarized molecules
such as water. These molecules are absorbed as a result
of Van der Waals forces and act as a lubricant to reduce
wear rates.
Smoothness
The atomic structure of alumina ceramic creates a
surface layer of oxygen ions. The oxygen ions produce
a residual surface charge attracting polarized molecules
such as water. These molecules are absorbed as a result
of Van der Waals forces and act as a lubricant to reduce
wear rates.