We are excited to let everyone going to STLE know that our Lead R&D Scientist, Girija Chaubey will be doing two presentations during this years annual conference. Below is the schedule so make sure you mark your calendars!

May 22, 2018
4G Metalworking IV
2:00-2.30 PM; 101G

AUTHORS (LAST NAME, FIRST NAME): Chaubey, Girija S.1; Diloyan, George1
INSTITUTIONS (ALL): 1. Nanotech Industrial Solutions, Avenel, NJ, United States. 

Body: Closed cage inorganic fullerene like (IF) tungsten disulfide particles are showed excellent performance in various lubricant applications due to its unique molecular structure. Atoms are strongly bonded to each other within the same layer whereas low shear strength between the layers make them excellent lubricant. The current work present outstanding anti-friction, anti-wear and extreme pressure properties of water base synthetic metalworking fluid containing IF-WS2 and it is further compared with both synthetic and semi-synthetic products which do not contain IF-WS2. Extreme pressure as well as anti-wear and ant-friction properties were tested using four ball tester and EP was further confirmed by Falex pin-on-vee block test. Anti-wear and anti-friction properties were tested using ball-on-disk test. Effect of various parameters such as load and speed were evaluated using ball-on-disk test. Properties was further tested using tapping torque tester and results were compared.

May 24, 2018
8A. Nanotribology VI: Nanoparticle Enhanced Lubrication II
1:30 -2.00 PM; 101J

ITLE: Stable Dispersion and Tribological Performance of IF-WS2 Nanoparticles in Aqueous System
AUTHORS (LAST NAME, FIRST NAME): Chaubey, Girija S.1; Diloyan, George1
INSTITUTIONS (ALL): 1. Nanotech Industrial Solutions, Avenel, NJ, United States. 
Body: Inorganic fullerene (IF) like WS2 nanoparticles are known to be an excellent lubricant additive for many applications. Stability and homogeneity of dispersion is crucial in order to obtain best performance. Proper surface engineering of nanoparticle with appropriate chemistry is the key factor in obtaining stable dispersion in liquid. Shape and size of nanoparticle also important in obtaining stable dispersion and determining tribological properties. The current work present surface engineering of IF-WS2 nanoparticle to obtained stable dispersion in aqueous solution. Tribological properties such as anti-friction, anti-wear and extreme pressure were studied. The result showed that very low treat rate of particle provide excellent anti-friction, anti-wear and extreme pressure properties. It also provided excellent heat conductivity properties, showing 20% increase in heat transfer. A mechanism of IF-WS2nanoparticles behavior is proposed and presented in this paper.


About STLE
The Society of Tribologists and Lubrication Engineers (STLE) is the premier technical society serving the needs of more than 13,000 individuals and 200 companies and organizations that comprise the tribology and lubrication engineering business sector. STLE members are experts who research, develop and market the methods and products that make industry more successful and that enhance the well-being of people worldwide. Our members are employed by the world’s leading corporations and academic institutions and by governmental agencies dealing with science and technology. STLE supports these distinguished men and women with a variety of professional education and certification programs.

Lubrication Engineering relates to the reduction of friction and wear between relatively moving parts. The term tribology describes the study of interacting moving surfaces. Tribology encompasses aspects of physics, chemistry, applied mathematics, metallurgy, material science, mechanical engineering, chemical engineering and applied mechanics.

Studies estimate that as much as one-third of all usable, device-produced energy is lost to friction and wear. This costs industry and consumers billions each year. In addition to energy waste, friction and wear greatly affect product reliability, maintainability, safety, life and environmental factors.