共搜索到11777条信息，每页显示10条信息，共1178页。用时：0小时0分0秒882毫秒
. The results show that the microstructure, microhardness, wear resistance and erode resistance of the coating are all evaluated. The coating has apparent characteristics of rapid and layered crystallization... of the coating. The composite coating has better wear resistance and erode resistance compared to steel substrate. Key words: cutting pick; plasma jet surface metallurgy; microstructure; wear......
Wear behaviors and lubrication medium of TiC/Al2O3 ceramic wire drawing dies YANG Xue-feng(杨学锋)1, DENG Jian-xin(邓建新) 2, WANG Hui(王 慧)1, ZE Xiang-bo(昃向博)1 1. Department of Mechanical... on the drawing force was investigated. The wear mechanisms of the ceramic drawing dies were investigated. Worn bore surfaces of the ceramic drawing dies were examined by scanning electron microscopy......
by SEM.The wear-resistance between ATC cermet and Co-cemented WC were compared. The results show that the effect of fracture toughness is better than that of hardness to the wear resistance of high...Research on Wear Behavior of ATC Cermet Material WANG You-wen1,ZHU Liu2,LI Jian2,LING Guo-ping2 (1.Center of the analysis and measurement, Zhejiang University, Hangzhou, China;2.College......
. The micro-hardness of the coatings is HV 825-HV 1 097 as-deposited and increases to HV 1 236 after heat treated. The wear resistance of the coatings is good and the friction coefficient changes from...-P-B4C coatings; microstructure; micro-hardness; wear resistance; high temperature oxidation resistance1 Introduction The copperplate of the mold used in liquid steel casting must have high hardness......
Characterization and wear resistance of macro-arc oxidation coating on magnesium alloy AZ91 in simulated body fluids CHEN Jun (陈 君), ZENG Rong-chang (曾荣昌), HUANG Wei-jiu (黄伟九), ZHENG Zi-qing (郑自..., an MgCO3 film formed in HCO3- containing solutions leads to an enhancement in micro-wear resistance. MAO coating deteriorates the erosion corrosion resistance of AZ91 alloy due to the formation......
, but slowly for the composites. The wear resistance of the composite is better than that of the corresponding alloy matrix mainly due to the presence of γ-Al2O3 particles for taking the external load... that of the composite prepared by adding Al2O3, so the better wear resistance of the composite prepared by adding AACH is mainly due to the γ-Al2O3 particles decomposed from AACH distributed uniformly in the matrix......
Influence of La2O3 addition on microstructure and wear resistance of Fe-Cr-C cladding formed by arc surface welding周野飞1,杨育林1,齐效文1,姜永文1,杨健1,任学军2,杨庆祥11. State Key Laboratory of Metastable Materials... resistance behaviour. The RE inclusion LaAlO3 as heterogeneous nuclei of the primary M7C3 was medium effective, and could refine the M7C3 carbides. Besides, the wear resistance could be improved by adding......
Influence of La2O3 addition on microstructure and wear resistance of Fe-Cr-C cladding formed by arc surface welding周野飞1,杨育林1,齐效文1,姜永文1,杨健1,任学军2,杨庆祥11. State Key Laboratory of Metastable Materials... resistance behaviour. The RE inclusion LaAlO3 as heterogeneous nuclei of the primary M7C3 was medium effective, and could refine the M7C3 carbides. Besides, the wear resistance could be improved by adding......
Effects of Mo and Zr on Microstructure,Mechanical Properties and Wear Resistance of Fe-Al Based AlloysI.D.Yeo,H.S.Kim,Y.G.Yoo,W.Y.Kim摘 要:<正>In this work the microstructure,mechanical properties and wear resistance of Fe-Al based alloys with various al- loying elements were studied.The microstructures were examined by optical and scanning electron......
Effects of Y2O3 on the microstructure and wear resistance of cobalt-based alloy coatings deposited by plasma transferred arc processHOU Qingyu, HUANG Zhenyi, and GAO Jiasheng Anhui Key Laboratory... with different Y2O3 contents were deposited on Q235A-carbon steel using plasma transferred arc (PTA) welding machine. The effect of Y2O3 on the microstructure and wear resistance properties......
