Design, Development, and Applications of Novel Techniques for Studying Surface Mechanical Properties

Abstract

T h i s paper r e v i e w s t h e a u t h o r ' s r e s e a r c h o f t h e adhesion, f r i c t i o n , and micromechanical p r o p e r t i e s o f m a t e r i a l s and p r e s e n t s examples o f t h e r e s u l t s . f f f o r c e ( a d h e s i o n ) and shear f o r c e ( f r i c t i o n ) r e q u i r e d t o b r e a k t h e i n t e r f a c i a l j u n c t i o n s between c o n t a c t i n g s u r f a c e s o f t h e m a t e r i a l s were examined a t v a r i o u s temperatures i n a vacuum.The surface c h e m i s t r y o f t h e m a t e r i a l s was analyzed by x-ray p h o t o e l e c t r o n s p e c t r o s c o p y . P r o p e r t i e s and e n v i r o n m e n t a l c o n d i t i o n s o f t h e s u r f a c e r e g i o n s which a f f e c t adhesion and f r i c t i o n -such a s s u r f a c e s e g r e g a t i o n , c o m p o s i t i o n , c r y s t a l s t r u c t u r e , s u r f a c e c h e m i s t r y , and temperature were a l s o s t u d i e d .

Adhesion, Friction, and Wear in Low-Pressure and Vacuum Environments

“…To understand the adhesion, friction, and wear behaviors of materials in vacuum environments, a simple experimental approach has been taken to control and characterize as carefully as possible the materials and environments in tribological studies (Ref [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. The highest-purity materials available are used in a vacuum chamber that contains an AES or XPS spectrometer, ion sputtering guns, and heating systems.…”

Effect of Mg Addition on the Structure and Properties of Al-4.5 Cu-3.4 Fe <i>In-Situ</i> Cast Composite

“…Those globular precipitates are harder than the needles [14]. These harder phases upgraded the wear resistance of the alloys [15]. For 5 minute rotation period, the wear loss decreased up to 4% Mg addition and then contrastingly got aggravated.…”