%0 Journal Article
%T Tribological Behavior of Si3N4-hBN Ceramic Materials against Stainless Steel under Dry Friction Condition<br>干摩擦条件下Si3N4-hBN复合陶瓷与1Cr18Ni9Ti配副的摩擦学特性研究
%A CHEN Wei
%A GAO Yi-min
%A CHEN Can
%A <br>陈威
%A 高义民
%A 陈灿
%J 摩擦学学报
%D 2010
%I 
%X The main objective of this paper is to study the tribological behavior of Si3N4-hBN composites sliding on stainless steel. Unlubricated wear tests were carried out on a MMU-5G type pin-on-disc wear tester. The results showed that the addition of hBN to Si3N4 resulted in a marked decrease of friction coefficient, from 0.95 for Si3N4 against stainless steel to 0.03 for Si3N4-30%hBN against stainless steel. Wear coefficients were below 10-4 mm3/Nm for all materials tested and decreased sharply with increasing volume fraction of hBN, e.g. nearly zero for Si3N4-20%hBN pin. The materials and worn surfaces as well as wear debris were characterized by means of scanning electron microscopy (SEM) and X-ray diffraction (XRD). Furthermore, the tribofilms were analyzed by using electron probe microanalysis (EPMA), laser scanning microscope (LSM), X-ray photoelectron spectroscopy (XPS). The analysis indicated that, under unlubricated condition, a tribo-oxide film containing B2O3, SiO2 and Fe2O3 was formed on the wearing surface. The tribofilm with a certain thickness protected both Si3N4-hBN pin and stainless steel disc, and lubricated the wear surfaces.
%K composite ceramics
%K unlubricated
%K spalling pit
%K tribochemical film<br>复合陶瓷
%K 干摩擦
%K 剥落坑
%K 摩擦化学反应膜
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=2F467A5C6371C830162AAA01D7DAD07A&aid=6C28C064F766DDC4C6AF3039E4CE57B4&yid=140ECF96957D60B2&vid=340AC2BF8E7AB4FD&iid=38B194292C032A66&sid=B78CD622C1934236&eid=D537C66B6404FE57&journal_id=1004-0595&journal_name=摩擦学学报&referenced_num=0&reference_num=0