%0 Journal Article
%T Study on Properties of Pulse Electrodeposited RE-Ni-W-P-SiC Composite Coatings<br>STUDY ON PROPERTIES OF PULSE ELECTRODEPOSITED RE-Ni-W-P-SiC COMPOSITE COATINGS
%A ZC Guo
%A XY Zhu
%A and RD Xu
%A <br>Z.C.
%A Guo
%A X.Y.
%A Zhu
%A R.D.
%A Xu
%J 金属学报(英文版)
%D 2007
%I 
%X The effects of pulse frequency f and duty cycle r on the deposition rate, composition, morphology,and hardness of pulse electrodeposited RE (rare earth)-Ni-W-P-SiC composite coatings have been studied. The results indicate that pulse current can improve the deposition rate of RE-Ni-W-P-SiC composite coatings; W, P, and SiC contents in the coating decrease with the increase of pulse frequency and reach the lowest value at f =33Hz, whereas the RE content in the composite coatings increases with the increase of pulse frequency. SiC content decreases with the increase of duty cycle, W content reaches the lowest value, and P content reaches the highest value at r=0.4; pulse current and RE can lend to smaller size of the crystalline grains; however, the effects of different pulse frequency and duty cycle on the morphologies of RE-Ni-W-P-SiC composite coatings are not obvious. The hardness of RE-Ni-W-P-SiC composite coatings is the highest when the duty cycle is at 0.6 and 0.8 and pulse frequency is at 50Hz. At the same pulse frequency, the hardness of RE-Ni-W-P-SiC composite coatings at r=0.8 is higher than that at r=0.6.
%K pulse frequency
%K duty cycle
%K electrodeposition
%K RE-Ni-W-P-SiC composite coating
%K COMPOSITE COATINGS
%K PULSE
%K PROPERTIES
%K different
%K however
%K pulse current
%K size
%K crystalline
%K decreases
%K contents
%K composite coatings
%K increase
%K reach
%K value
%K results
%K improve
%K rare
%K earth
%K hardness
%K morphology<br>RE-Ni-W-P-SiC复合镀层
%K 性质
%K 脉冲电沉积
%K 脉冲频率
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=B4F935D494F9F391FC48976F147613FA&yid=A732AF04DDA03BB3&vid=A04140E723CB732E&iid=0B39A22176CE99FB&sid=480C51B1F0CE0AB6&eid=8477411EEDB08A86&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=0&reference_num=12