Surface Chemistry, Friction, and Wear of Ni-Zn and Mn-Zn Ferrites in Contact with Metals

The r e s u l t s o f t h e i n v e s t i g a t i o n i n d i c a t e t h a t BN f i l m s on n o n m e t a l l i c s u b s t r a t e s , l i k e metal f i l m s on m e t a l l i c s u b s t r a t e s , deform e l a s t i c a l l y and C I 2 m I p l a s t i c a l l y i n t h e i n t e r f a c i a l r e g i o n when i n c o n t a c t w i t h a diamond p i n . However, u n l i k e metal f i l m s and s u b s t r a t e s , BN f i l m s on n o n m e t a l l i c s u b s t r a t e s can f r a c t u r e when t h e y a r e c r i t i c a l l y loaded. Not o n l y does t h e y i e l d p r e s s u r e (hardness) o f S i and S l o p s u b s t r a t e s i n c r e a s e by a f a c t o r o f 2 i n t h e presenceo f a BN f i l m , b u t t h e c r i t i c a l l o a d needed t o f r a c t u r e i n c r e a s e s as w e l l . The presence o f f i l m s on t h e b r i t t l e s u b s t r a t e s can a r r e s t c r a c k f o r m a t i o n . The BN f i l m reduces adhesion and f r i c t i o n i n t h e s l i d i n g c o n t a c t . BN adheres t o *Trade names o r m a n u f a c t u r e r s ' names a r e used i n t h i s r e p o r t f o r i d e n t i f i c a t i o n o n l y . T h i s usage does n o t c o n s t i t u t e an o f f i c i a l endorsement, e i t h e r expressed o r i m p l i e d , by t h e N a t i o n a l Aeronautics and Space A d m i n i s t r a t i o n .

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Mechanical strength and tribological behavior of ion-beam-deposited boron nitride films on non-metallic substrates

Miyoshi

Buckley

Pouch

et al. 1987

Surface and Coatings Technology

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Adhesion, friction and micromechanical properties of ceramics

Miyoshi

1988

Surface and Coatings Technology

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

Miyoshi

1989

MRS Proc.

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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 .

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Surface Chemistry, Friction, and Wear of Ni-Zn and Mn-Zn Ferrites in Contact with Metals

Cited by 3 publications

References 8 publications

Mechanical strength and tribological behavior of ion-beam-deposited boron nitride films on non-metallic substrates

Mechanical strength and tribological behavior of ion-beam-deposited boron nitride films on non-metallic substrates

Adhesion, friction and micromechanical properties of ceramics

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

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