TY - JOUR
T1 - Hydrolytic stability and tribological properties of N-containing heterocyclic borate esters as lubricant additives in rapeseed oil
AU - Li, Jianchang
AU - Li, Zhipeng
AU - Ren, Tianhui
AU - Zeng, Xiangqiong
AU - van der Heide, Emile
PY - 2014
Y1 - 2014
N2 - Borate ester compounds are emerging as promising materials for lubricating systems. The main drawback of borate esters however, is the susceptiblity to hydrolysis. In this work, two kinds of N-containing heterocyclic borate esters were synthesized. Their hydrolytic stability and tribological properties as lubricant additives in rapeseed oil were evaluated. The results showed that these borate esters not only possessed promising tribological properties, but also had high hydrolytic stability. Thermal films and tribofilms were investigated by using X-ray absorption near-edge structure (XANES) spectroscopy. Surface analysis indicated that thermal films were mainly composed of adsorbed films and thermo-chemical reaction products. Tribofilms were mainly constituted by BN, B2O3 and organic B
AB - Borate ester compounds are emerging as promising materials for lubricating systems. The main drawback of borate esters however, is the susceptiblity to hydrolysis. In this work, two kinds of N-containing heterocyclic borate esters were synthesized. Their hydrolytic stability and tribological properties as lubricant additives in rapeseed oil were evaluated. The results showed that these borate esters not only possessed promising tribological properties, but also had high hydrolytic stability. Thermal films and tribofilms were investigated by using X-ray absorption near-edge structure (XANES) spectroscopy. Surface analysis indicated that thermal films were mainly composed of adsorbed films and thermo-chemical reaction products. Tribofilms were mainly constituted by BN, B2O3 and organic B
KW - Heterocyclic borate esters
KW - Hydrolytic stability
KW - XANES spectroscopy
KW - Tribological properties
U2 - 10.1016/j.triboint.2014.01.006
DO - 10.1016/j.triboint.2014.01.006
M3 - Article
VL - 73
SP - 101
EP - 107
JO - Tribology international
JF - Tribology international
SN - 0301-679X
ER -