[aerohead]

Here's another from the rubbish pile:
From the alleged 'boric-oxide' ( dropped by Argonne's Dr. Erdemir between 1991, and 2007 ) we go completely off the rails, veering onto Cubic Lattice Structured Boron- Nitride ( c-BN ).
And again, South Africa gets all of the 'TOP-SECRET' engines that were never intended to see the light of day!
South Africa, engines operating at 1700-C ( 3,092-F ) and completely sealed and reinforced, allowing operational internal pressures of 1,000,000-psi ( 68,911,351-kPa ) the requirement for c-BN formation.
I must also presume that South Africa also gets the CIA / MI6 super-secret 'super-heavy' water, with a boiling point above 1,700-C, @ 68,027-atmospheres, in order for the BA platelets to swim close to the 'diamond ' surfaces.
Where, for the rest of the world, c-BN is only used to 'machine' machined parts used in engines, S. Africa gets engines with parts actually made of the stuff.
Truly amazing!
PS,
A) The friction coefficient for c-BN on diamond is 0.700 ( 700% higher than 100% PAO base oil )
B) The friction coefficient for c-BN on stainless-steel balls of ASTM 4-Ball test machine in 0.100 ( identical to the raw PAO-4 oil )
C) The Erdemir, Fenske, & Erck boric oxide- boric acid interface is predicated upon a load and substrate exposed to open air, a problematic situation @ 68,911,351-kPa.