http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Devizenko, Alexander Yu. (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Toward Zero Micro/Macro-Scale Wear Using Periodic Nano-Layered Coatings
Penkov, Oleksiy V.,Devizenko, Alexander Yu.,Khadem, Mahdi,Zubarev, Evgeniy N.,Kondratenko, Valeriy V.,Kim, Dae-Eun American Chemical Society 2015 ACS APPLIED MATERIALS & INTERFACES Vol.7 No.32
<P>Wear is an important phenomenon that affects the efficiency and life of all moving machines. In this regard, extensive efforts have been devoted to achieve the lowest possible wear in sliding systems. With the advent of novel materials in recent years, technology is moving toward realization of zero wear. Here, we report on the development of new functional coatings comprising periodically stacked nanolayers of amorphous carbon and cobalt that are extremely wear resistant at the micro and macro scale. Because of their unique structure, these coatings simultaneously provide high elasticity and ultrahigh shear strength. As a result, almost zero wear was observed even after one million sliding cycles without any lubrication. The wear rate was reduced by 8–10-fold compared with the best previously reported data on extremely low wear materials.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/aamick/2015/aamick.2015.7.issue-32/acsami.5b05599/production/images/medium/am-2015-05599v_0008.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/am5b05599'>ACS Electronic Supporting Info</A></P>
-
Self-Healing Phenomenon and Dynamic Hardness of C<sub>60</sub>-Based Nanocomposite Coatings
Penkov, Oleksiy V.,Pukha, Volodymyr E.,Devizenko, Alexander Yu.,Kim, Hae-Jin,Kim, Dae-Eun American Chemical Society 2014 NANO LETTERS Vol.14 No.5
<P>The phenomenon of surface self-healing in C<SUB>60</SUB>-based polymer coatings deposited by ion-beam assisted physical vapor deposition was investigated. Nanoindentation of the coatings led to the formation of a protrusion rather than an indent. This protrusion was accompanied by an abnormal shape of the force–distance curve, where the unloading curve lies above the loading curve due to an additional force applied in pulling the indenter out of the media. The coatings exhibited a nanocomposite structure that was strongly affected by the ratio of C<SUB>60</SUB> ion and C<SUB>60</SUB> molecular beam intensities during deposition. The coatings also demonstrated the dynamic hardness effect, where the effective value of the hardness depends significantly on the indentation speed.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/nalefd/2014/nalefd.2014.14.issue-5/nl500321g/production/images/medium/nl-2014-00321g_0004.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nl500321g'>ACS Electronic Supporting Info</A></P>
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
