Quote:
Originally Posted by Logic
Ionic 
Same as Molybdenum Disulphide, but I don't think MoS2 forms a protective ceramic layer on the metal surface and does not have the crazy low coefficient of friction of Boric Acid.
I havent researched it nearly as much as H3BO3.
The above results demonstrate that with a mixture of boric acid and an oil lubricant, the friction coefficients are reduced by 10 to over 1000% below those of the unmixed lubricant itself. The wear rates of pins are reduced by factors of 50 to 100 below those of pins tested in unmixed oil itself.
https://patents.google.com/patent/US5431830A/en |
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1) 'ALL' friction modifiers 'plate' the metal surface.
2) There was never a protective 'ceramic layer' formed from the boric acid.
3) 'Argonne's' boric acid nanoparticle-modified SAE 15W-40 achieved Mu= 0.090.
- RedLine's synthetic 40W had Mu=0.0453
- Ford Motor Company's MoDTC-modified SAE 5W-30 motor oil achieved Mu= 0.067
- Un-modified API-SF SAE 30W @ 5,000-rpm was Mu= 0.054
- All ASTM-tested non-boric acid-modified motor oils had lower friction than Dr. Erdemir's ASTM-tested boric acid-modified motor oil.
- ASTM pin-on-disk wear tests were conducted under 'SEVERE TRIBOLOGICAL CONDITIONS', Dr. Ali Erdemir, and have no bearing on 'NORMAL' operating conditions.
4) Wu Hongxing et al., at The State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, Northwestern Polytechnical University, Xi'an, Shaanxi, China managed to achieve a 31.2% friction reduction with 100 nm Boric Acid in oil, but all the powder 'settled out' of the oil within 2-days ( 48-hours ).